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arXiv

Preprints

# equal contribution; * corresponding author

9. Strain-tunable charge localization coupled to complex magnetic orders in EuAl₄

M. Baumgartner^#, Xunyang Hong^#, Tianren Wang^#, Fazhi Yang, Yuetong Wu, Junzhang Ma, Tian Shang, J. Oppliger, J. Küspert, M. Hücker, O. Ivashko, F. Igoa Saldaña, M. v. Zimmermann, S. Pyon, K. Kudo, M. Nohara, P. Sačer, A. Akrap, N. Barišić, M. Novak, Qisi Wang*, J. Chang

arXiv:2607.07544 arXiv

8. d-wave altermagnetism revealed by resonant inelastic X-ray scattering

Guangkai Zhang, Yuehong Li, Xubin Ye, Vincent C. Morano, Sze Tung Li, Jaewon Choi, Rebecca Scatena, Shuai Tang, Maocai Pi, Mengqi Ye, Mirian Garcia-Fernandez, Alessandro Bombardi, Xiaomei Qin, Zhao Pan, Daniel G. Mazzone, Qisi Wang*, Yi Lu*, Yao Shen*, Youwen Long

arXiv:2606.18731 arXiv

7. Direct High-Magnetic-Field Coupling to Stripe Order in a Cuprate Superconductor

L. Martinelli*, I. Biało, J. Oppliger, J. Küspert, O. Gerguri, S. Brunner, B. Eggert, M. H. Fischer, J. Geck, M. Rahn, E. Fogh, J. Choi, A. Miyata, O. Prokhnenko, Z. Islam, F. Igoa Saldaña, M. v. Zimmermann, R. Nickel, K. Kummer, N. B. Brookes, A. Painganoor, P. C. Forino, R. Toft-Petersen, N. B. Christensen, X. Hong, Q. Wang, T. Kurosawa, N. Momono, M. Oda, D. V. Novikov, A. Khadiev, T. Herrmannsdörfer, A. Kurtanidze, K. Ollefs, Z. Konôpková, M. Andrzejewski, M. Tang, U. Zastrau, A. Pelka, H. Höppner, J. Sztuk-Dambietz, V. Rovensky, T. Laurus, E. Brambrink, B. Näser, M. Sikora, C. Strohm*, C. Baehtz*, S. Yamamoto*, J. Chang*

arXiv:2606.07349 arXiv

6. Nature of magnetism in bilayer nickelate La₃Ni₂O₇ single crystals

Lixing Chen^#, Enkang Zhang^#, Yiqing Hao, Yinghao Zhu, Bingkun Cui, Douglas L. Abernathy, Travis J. Williams, Yoichi Ikeda, Hao Zhang, Feiyang Liu, Wenbin Wang, Qisi Wang, Jun Zhao*

arXiv:2605.03448 arXiv

5. Autonomous Diffractometry Enabled by Visual Reinforcement Learning

J. Oppliger*, M. Stifter, A. Rüegg, I. Biało, L. Martinelli, P. G. Freeman, D. Prabhakaran, J. Zhao, Q. Wang, J. Chang*

arXiv:2604.11773 arXiv

4. Collective spin excitations in trilayer nickelate La₄Ni₃O₁₀

Ying Chan, Yuehong Li, Yujie Yan, Xunyang Hong, Tianren Wang, Marli dos Reis Cantarino, Yinghao Zhu, Enkang Zhang, Lixing Chen, Jun Okamoto, Hsiao-Yu Huang, Di-Jing Huang, N. B. Brookes, Johan Chang, Yao Shen*, Jun Zhao*, Qisi Wang*

arXiv:2604.04643 arXiv

3. Orbital Separation of Charge Order and Superconductivity in La_2−xSr_xCuO₄

I. Biało*, O. Gerguri, L. Martinelli*, J. Küspert, J. Choi, M. Garcia-Fernandez, S. Agrestini, K. J. Zhou, E. Weschke, T. Kurosawa, N. Momono, M. Oda, C. Lin, Q. Wang, J. Chang

arXiv:2601.01643 arXiv

2. Concurrent Multifractality and Anomalous Hall Response in the Nodal Line Semimetal Fe₃GeTe₂ Near Localization

Subramanian Mathimalar^#, Ambikesh Gupta^#, Yotam Roet^#, Stanislaw Galeski^#, Rafal Wawrzynczak, Mikel Garcia-Diez, Iñigo Robredo, Praveen Vir, Nitesh Kumar, Walter Schnelle, Karin von Arx, Julia Küspert, Qisi Wang, Johan Chang, Yasmine Sassa, Ady Stern, Felix von Oppen, Maia G. Vergniory, Claudia Felser, Johannes Gooth, Nurit Avraham, Haim Beidenkopf*

arXiv:2503.04367 arXiv

1. Observation of collective charge excitations in a cuprate superconductor

Xunyang Hong, Yujie Yan, L. Martinelli, I. Biało, K. von Arx, J. Choi, Y. Sassa, S. Pyon, T. Takayama, H. Takagi, Zhenglu Li, M. Garcia-Fernandez, Ke-Jin Zhou, J. Chang*, Qisi Wang*

arXiv:2503.04334 arXiv

Publications

# equal contribution; * corresponding author

70. Persistent paramagnons in high-temperature infinite-layer nickelate superconductors

Yujie Yan^#, Ying Chan^#, Xunyang Hong, S. Lin Er Chow, Zhaoyang Luo, Yuehong Li, Tianren Wang, Yuetong Wu, Izabela Biało, Nurul Fitriyah, Saurav Prakash, Xing Gao, King Yau Yip, Qiang Gao, Xiaolin Ren, Jaewon Choi, Ganesha Channagowdra, Jun Okamoto, Xingjiang Zhou, Zhihai Zhu, Liang Si, Mirian Garcia-Fernandez, Ke-Jin Zhou, Hsiao-Yu Huang, Di-Jing Huang, Johan Chang*, A. Ariando*, Qisi Wang*

Nature Communications 17, 6645 (2026) arXiv DOI

69. Impact of electron correlations on infinite-layer cuprates and nickelates

Xunyang Hong^#, Yuetong Wu^#, I. Biało, Ying Chan, Sze Tung Li, L. Martinelli, O. Gerguri, A. Drewanowski, Qiang Gao, Xiaolin Ren, Xingjiang Zhou, Zhihai Zhu, A. Galdi, D. G. Schlom, K. M. Shen, J. Choi, M. Garcia Fernandez, Ke-Jin Zhou, N. B. Brookes, H. M. Rønnow, Qisi Wang*, J. Chang

Communications Materials 7, 182 (2026) arXiv DOI

68. Enhanced superconductivity and mixed-dimensional behaviour in infinite-layer samarium nickelate thin films

Mingwei Yang^#, Heng Wang^#, Jiayin Tang^#, Junping Luo, Xianfeng Wu, Wenjing Xu, Aile Wang, Yuetong Wu, Ruilin Mao, Ze Wang, Zhicheng Pei, Guangdi Zhou, Zhengang Dong, Bohan Feng, Lingchi Shi, Wenjie Meng, Chuanying Xi, Li Pi, Qingyou Lu, Jun Okamoto, Hsiao-Yu Huang, Di-Jing Huang, Haoliang Huang, Qisi Wang, Peng Gao, Zhuoyu Chen*, Danfeng Li*

Nature Communications 17, 2761 (2026) arXiv DOI

67. Magnetic Excitations of a Half-Filled Tl-based Cuprate

I. Biało*, Q. Wang*, J. Küspert, X. Hong, L. Martinelli, O. Gerguri, Y. Chan, K. von Arx, O. K. Forslund, W. R. Pudełko, C. Lin, N. C. Plumb, Y. Sassa, D. Betto, N. B. Brookes, M. Rosmus, N. Olszowska, M. D. Watson, T. K. Kim, C. Cacho, M. Horio, M. Ishikado, H. M. Rønnow, J. Chang

Communications Materials 7, 50 (2026) arXiv DOI

66. Decoupling of static and dynamic charge correlations revealed by uniaxial strain in a cuprate superconductor

L. Martinelli^#*, I. Biało^#*, X. Hong, J. Oppliger, C. Lin, T. Schaller, J.Küspert, M. H. Fischer, T. Kurosawa, N. Momono, M. Oda, D. V. Novikov, A. Khadiev, E. Weschke, J. Choi, S. Agrestini, M. Garcia-Fernandez, Ke-Jin Zhou, Q. Wang, J. Chang*

Physical Review B 112, L041124 (2025) Letter, Editors' suggestion arXiv DOI

65. Resolving the orbital character of low-energy excitations in Mott insulator with intermediate spin-orbit coupling

Karin von Arx, Pascal Rothenbühler, Qisi Wang, Leonardo Martinelli, Jaewon Choi, Mirian Garcia-Fernandez, Stefano Agrestini, Ke-Jin Zhou, Antonio Vecchione, Rosalba Fittipaldi, Yasmine Sassa, Mario Cuoco, Filomena Forte, Johan Chang

Communications Physics 8, 210 (2025) arXiv DOI

64. Research progress of resonant X-ray scattering of charge order in cuprate superconductors

CHAN Ying, YAN Yujie, WU Yuetong, WANG Qisi*

Acta Physica Sinica 74, 087402 (2025) Invited review, Editors' suggestion DOI

63. Anomalous Hall Effect due to Magnetic Fluctuations in a Ferromagnetic Weyl Semimetal

Ola Kenji Forslund*, Xiaoxiong Liu, Soohyeon Shin, Chun Lin, Masafumi Horio, Qisi Wang, Kevin Kramer, Saumya Mukherjee, Timur Kim, Cephise Cacho, Chennan Wang, Tian Shang, Victor Ukleev, Jonathan S. White, Pascal Puphal, Yasmine Sassa, Ekaterina Pomjakushina, Titus Neupert, Johan Chang

Physical Review Letters 134, 126602 (2025) Editors' suggestion arXiv DOI

62. Discovery of giant unit-cell super-structure in the infinite-layer nickelate PrNiO_2+x

Jens Oppliger*, Julia Küspert, Ann-Christin Dippel, Martin v. Zimmermann, Olof Gutowski, Xiaolin Ren, Xingjiang Zhou, Zhihai Zhu, Ruggero Frison, Qisi Wang, Leonardo Martinelli, Izabela Biało, Johan Chang*

Communications Materials 6, 3 (2025) arXiv DOI

61. Probing enhanced superconductivity in van der Waals polytypes of V_xTaS₂

Wojciech R. Pudelko*, Huanlong Liu, Francesco Petocchi, Hang Li, Eduardo Bonini Guedes, Julia Küspert, Karin von Arx, Qisi Wang, Ron Cohn Wagner, Craig M. Polley, Mats Leandersson, Jacek Osiecki, Balasubramanian Thiagarajan, Milan Radović, Philipp Werner, Andreas Schilling, Johan Chang, Nicholas C. Plumb*

Physical Review Materials 8, 104802 (2024) Editors' suggestion arXiv DOI

60. Two Distinct Charge Orders in Infinite-Layer PrNiO_2+δ Revealed by Resonant X-Ray Diffraction

Xiaolin Ren, Ronny Sutarto, Qiang Gao, Qisi Wang, Jiarui Li, Yao Wang, Tao Xiang, Jiangping Hu, Fu-Chun Zhang, J. Chang, Riccardo Comin, X. J. Zhou*, Zhihai Zhu*

Chinese Physics Letters 41, 117404 (2024) arXiv DOI

59. Strain-tuned incompatible magnetic exchange-interaction in La₂NiO₄

Izabela Biało^#*, Leonardo Martinelli^#, Gabriele De Luca, Paul Worm, Annabella Drewanowski, Simon Jöhr, Jaewon Choi, Mirian Garcia-Fernandez, Stefano Agrestini, Ke-Jin Zhou, Kurt Kummer, Nicholas B. Brookes, Luo Guo, Anthony Edgeton, Chang B. Eom, Jan M. Tomczak, Karsten Held, Marta Gibert, Qisi Wang*, Johan Chang

Communications Physics 7, 230 (2024) arXiv DOI

58. Engineering phase competition between stripe order and superconductivity in La_1.88Sr_0.12CuO₄

J. Küspert*, I. Biało, R. Frison, A. Morawietz, L. Martinelli, J. Choi, D. Bucher, O. Ivashko, M. v. Zimmermann, N. B. Christensen, D. G. Mazzone, G. Simutis, A. A. Turrini, L. Thomarat, D. W. Tam, M. Janoschek, T. Kurosawa, N. Momono, M. Oda, Qisi Wang*, J. Chang

Communications Physics 7, 225 (2024) arXiv DOI

57. Magnetic excitations in strained infinite-layer nickelate PrNiO₂ films

Qiang Gao^#, Shiyu Fan^#, Qisi Wang^#, Jiarui Li, Xiaolin Ren, Izabela Biało, Annabella Drewanowski, Pascal Rothenbühler, Jaewon Choi, Ronny Sutarto, Yao Wang, Tao Xiang, Jiangping Hu, Ke-Jin Zhou, Valentina Bisogni, Riccardo Comin, J. Chang*, Jonathan Pelliciari*, X. J. Zhou*, Zhihai Zhu*

Nature Communications 15, 5576 (2024) arXiv DOI

56. Magnon interactions in a moderately correlated Mott insulator

Qisi Wang*, S. Mustafi, E. Fogh, N. Astrakhantsev, Z. He, I. Biało, Ying Chan, L. Martinelli, M. Horio, O. Ivashko, N. E. Shaik, K. von Arx, Y. Sassa, E. Paris, M. H. Fischer, Y. Tseng, N. B. Christensen, A. Galdi, D. G. Schlom, K. M. Shen, T. Schmitt, H. M. Rønnow, J. Chang*

Nature Communications 15, 5348 (2024) arXiv DOI

55. Spin fluctuations sufficient to mediate superconductivity in nickelates

Paul Worm, Qisi Wang, Motoharu Kitatani, Izabela Biało, Qiang Gao, Xiaolin Ren, Jaewon Choi, Diana Csontosová, Ke-Jin Zhou, Xingjiang Zhou, Zhihai Zhu, Liang Si*, Johan Chang, Jan M. Tomczak, Karsten Held*

Physical Review B 109, 235126 (2024) Editors' suggestion arXiv DOI

54. Interplay between crystal field and magnetic anisotropy in the triangular-lattice antiferromagnet NaTmTe₂

Shiyi Zheng^#, Yiqing Gu^#, Yimeng Gu^#, Zeyu Kao, Qisi Wang, Hongliang Wo, Yinghao Zhu, Feiyang Liu, Liusuo Wu, Jieming Sheng, Johan Chang, Seiko Ohira-Kawamura, Naoki Murai, Christof Niedermayer, Daniel Gabriel Mazzone, Gang Chen, Jun Zhao*

Physical Review B 109, 075159 (2024) DOI

53. Two-dimensional phase-fluctuating superconductivity in bulk crystalline NdO_0.5F_0.5BiS₂

C. S. Chen, J. Küspert, I. Biało, J. Mueller, K. W. Chen, M. Y. Zou, D. G. Mazzone, D. Bucher, K. Tanaka, O. Ivashko, M. v. Zimmermann, Qisi Wang, Lei Shu*, J. Chang

Physical Review B 109, 054516 (2024) arXiv DOI

52. Weak-signal extraction enabled by deep-neural-network denoising of diffraction data

Jens Oppliger*, M. Michael Denner, Julia Küspert, Ruggero Frison, Qisi Wang, Alexander Morawietz, Oleh Ivashko, Ann-Christin Dippel, Martin von Zimmermann, Izabela Biało, Leonardo Martinelli, Benoît Fauqué, Jaewon Choi, Mirian Garcia-Fernandez, Ke-Jin Zhou, Niels Bech Christensen, Tohru Kurosawa, Naoki Momono, Migaku Oda, Fabian D. Natterer, Mark H. Fischer, Titus Neupert, Johan Chang*

Nature Machine Intelligence 6, 180 (2024) arXiv DOI

51. Revealing the Orbital Composition of Heavy Fermion Quasiparticles in CeRu₂Si₂

Kevin P. Kramer, Rina Tazai, Karin von Arx, Masafumi Horio, Julia Küspert, Qisi Wang, Yasmine Sassa, Timur K. Kim, Céphise Cacho, Julien E. Rault, Patrick Le Fèvre, François Bertran, Marc Janoschek, Nicolas Gauthier, Daniel Mazzone, Ramzy Daou, Johan Chang

Journal of the Physical Society of Japan 92, 104701 (2023) DOI

50. Exchange-renormalized crystal field excitations in the quantum Ising magnet KTmSe₂

Shiyi Zheng^#, Hongliang Wo^#, Yiqing Gu^#, Rui Leonard Luo, Yimeng Gu, Yinghao Zhu, Paul Steffens, Martin Boehm, Qisi Wang, Gang Chen*, Jun Zhao*

Physical Review B 108, 054435 (2023) Editors' suggestion arXiv DOI

49. Spin Fluctuations in Sr_1.8La_0.2RuO₄

Zheng He, Qisi Wang*, Yu Feng, Chul Kim, Wonshik Kyung, Changyoung Kim, Hongliang Wo, Gaofeng Ding, Yiqing Hao, Feiyang Liu, Helen C. Walker, Devashibhai T. Adroja, Astrid Schneidewind, Wenbin Wang, Jun Zhao*

Physical Review B 107, L201107 (2023) arXiv DOI

48. In-situ uniaxial pressure cell for x-ray and neutron scattering experiments

G. Simutis*, A. Bollhalder, M. Zolliker, J. Küspert, Q. Wang, D. Das, F. Van Leeuwen, O. Ivashko, O. Gutowski, J. Philippe, T. Kracht, P. Glaevecke, T. Adachi, M. v. Zimmermann, S. Van Petegem, H. Luetkens, Z. Guguchia, J. Chang, Y. Sassa, M. Bartkowiak, M. Janoschek

Review of Scientific Instruments 94, 013906 (2023) arXiv DOI

47. Fate of charge order in overdoped La-based cuprates

K. von Arx*, Qisi Wang, S. Mustafi, D. G. Mazzone, M. Horio, D. John Mukkattukavil, E. Pomjakushina, S. Pyon, T. Takayama, H. Takagi, T. Kurosawa, N. Momono, M. Oda, N. B. Brookes, D. Betto, W. Zhang, T. C. Asmara, Y. Tseng, T. Schmitt, Y. Sassa, J. Chang*

npj Quantum Materials 8, 7 (2023) arXiv DOI

46. Low-energy spin fluctuations in FeSe_0.95S_0.05

Die Hu^#, Qisi Wang^#*, Hongliang Wo, Astrid Schneidewind, Jun Zhao*

Physical Review B 106, 214522 (2022) DOI

45. Single-domain stripe order in a high-temperature superconductor

G. Simutis*, J. Küspert, Q. Wang, J. Choi, D. Bucher, M. Boehm, F. Bouradot, M. Bertelsen, Ch. N. Wang, T. Kurosawa, M. Momono, M. Oda, M. Månsson, Y. Sassa, M. Janoschek, N. B. Christensen, J. Chang*, D. G. Mazzone*

Communications Physics 5, 296 (2022) arXiv DOI

44. Pseudogap Suppression by Competition with Superconductivity in La-Based Cuprates

J. Küspert*, R. Cohn Wagner, C. Lin, K. von Arx, Q. Wang, K. Kramer, W. R. Pudelko, N. C. Plumb, C. E. Matt, C. G. Fatuzzo, D. Sutter, Y. Sassa, J. -Q. Yan, J. -S. Zhou, J. B. Goodenough, S. Pyon, T. Takayama, H. Takagi, T. Kurosawa, N. Momono, M. Oda, M. Hoesch, C. Cacho, T. K. Kim, M. Horio, J. Chang

Physical Review Research 4, 043015 (2022) arXiv DOI

43. Editorial: Nematicity in iron-based superconductors

Qisi Wang*, Lara Fanfarillo*, Anna E. Böhmer*

Frontiers in Physics 10, 1038127 (2022) DOI

42. Frustrated magnetic interactions in FeSe

Yiqing Gu, Qisi Wang, Hongliang Wo, Zheng He, Helen C. Walker, Jitae T. Park, Mechthild Enderle, Andrew D. Christianson, Wenbin Wang, Jun Zhao*

Physical Review B 106, L060504 (2022) arXiv DOI

41. Crystal symmetry of stripe-ordered La_1.88Sr_0.12CuO₄

Ruggero Frison, Julia Kuespert, Qisi Wang, Oleh Ivashko, Martin von Zimmermann, Martin Meven, Damian Bucher, Jakob Larsen, Christof Niedermayer, Mark Janoschek, Tohru Kurosawa, Naoki Momono, Migaku Oda, Niels Bech Christensen*, Johan Chang

Physical Review B 105, 224113 (2022) arXiv DOI

40. Resonant Inelastic Soft X-Ray Scattering on LaPt₂Si₂

Deepak John Mukkattukavil*, Johan Hellsvik, Anirudha Ghosh, Evanthia Chatzigeorgiou, Elisabetta Nocerino, Qisi Wang, Karin von Arx, Shih-Wen Huang, Victor Ekholm, Zakir Hossain, Arumugum Thamizhavel, Johan Chang, Martin Månsson, Lars Nordström, Conny Såthe, Marcus Agåker, Jan-Erik Rubensson, Yasmine Sassa*

Journal of Physics: Condensed Matter 34, 324003 (2022) arXiv DOI

39. Anomalous contribution to the nematic electronic states from the structural transition in FeSe revealed by time- and angle-resolved photoemission spectroscopy

Yuanyuan Yang, Qisi Wang, Shaofeng Duan, Hongliang Wo, Chaozhi Huang, Shichong Wang, Lingxiao Gu, Dao Xiang, Dong Qian, Jun Zhao, Wentao Zhang*

Physical Review Letters 128, 246401 (2022) arXiv DOI

38. Unveiling Unequivocal Charge Stripe Order in a Prototypical Cuprate Superconductor

J. Choi, Q. Wang, S. Jöhr, N. B. Christensen, J. Küspert, D. Bucher, D. Biscette, M. H. Fischer, M. Hücker, T. Kurosawa, N. Momono, M. Oda, O. Ivashko*, M. v. Zimmermann, M. Janoschek*, J. Chang*

Physical Review Letters 128, 207002 (2022) arXiv DOI

37. Unusual Band Splitting and Superconducting Gap Evolution with Sulfur Substitution in FeSe

Yuanyuan Yang, Qisi Wang, Shaofeng Duan, Hongliang Wo, Chaozhi Huang, Shichong Wang, Lingxiao Gu, Dong Qian, Jun Zhao, Wentao Zhang*

Chinese Physics Letters 39, 057302 (2022) arXiv DOI

36. Uniaxial pressure induced stripe order rotation in La_1.88Sr_0.12CuO₄

Qisi Wang*, K. von Arx, D. G. Mazzone,S. Mustafi, M. Horio, J. Küspert, J. Choi, D. Bucher, H. Wo, J. Zhao, W. Zhang, T. C. Asmara, Y. Sassa, M. Månsson, N. B. Christensen, M. Janoschek, T. Kurosawa, N. Momono, M. Oda, M. H. Fischer, T. Schmitt, J. Chang*

Nature Communications 13, 1795 (2022) arXiv DOI

35. Polarized neutron scattering studies of magnetic excitations in iron-selenide superconductor (Li_0.8Fe_0.2)ODFeSe (Tc = 41 K)

Die Hu, Yu Feng, Jitae Park, Hongliang Wo, Qisi Wang, Frederic Bourdarot, Alexandre Ivanov, Jun Zhao*

Journal of Physics: Condensed Matter 33, 45LT01 (2021) arXiv DOI

34. Field-Tuned Quantum Effects in a Triangular-Lattice Ising Magnet

Yayuan Qin^#, Yao Shen^#, Changle Liu, Hongliang Wo, Yonghao Gao, Yu Feng, Xiaowen Zhang, Gaofeng Ding, Yiqing Gu, Qisi Wang, Shoudong Shen, Helen C. Walker, Robert Bewley, Jianhui Xu, Martin Boehm, Paul Steffens, Seiko Ohira-Kawamura, Naoki Murai, Astrid Schneidewind, Xin Tong, Gang Chen*, Jun Zhao*

Science Bulletin 67, 38 (2022) arXiv DOI

33. Charge order lock-in by electron-phonon coupling in La_1.675Eu_0.2Sr_0.125CuO₄

Qisi Wang^#*, Karin von Arx^#, Masafumi Horio, Deepak John Mukkattukavil, Julia Küspert, Yasmine Sassa, Thorsten Schmitt, Abhishek Nag, Sunseng Pyon, Tomohiro Takayama, Hidenori Takagi, Mirian Garcia-Fernandez, Ke-Jin Zhou, Johan Chang*

Science Advances 7, eabg7394 (2021) arXiv DOI

32. Decoupling of lattice and orbital degrees of freedom in an iron-pnictide superconductor

C. E. Matt*, O. Ivashko, M. Horio, J. Choi, Q. Wang, D. Sutter, N. Dennler, M. H. Fischer, S. Katrych, L. Forro, J. Ma, B. Fu, B. Q. Lv, M. v. Zimmermann, T. K. Kim, N. C. Plumb, N. Xu, M. Shi, J. Chang

Physical Review Research 3, 023220 (2021) arXiv DOI

31. Evolution of spin excitations from bulk to monolayer FeSe

Jonathan Pelliciari*, Seher Karakuzu, Qi Song, Riccardo Arpaia, Abhishek Nag, Matteo Rossi, Jiemin Li, Tianlun Yu, Xiaoyang Chen, Rui Peng, Mirian García-Fernández, Andrew C. Walters, Qisi Wang, Jun Zhao, Giacomo Ghiringhelli, Donglai Feng, Thomas A. Maier, Ke-Jin Zhou, Steven Johnston, Riccardo Comin*

Nature Communications 12, 3122 (2021) arXiv DOI

30. Electronic reconstruction forming a C2-symmetric Dirac semimetal in Ca₃Ru₂O₇

M. Horio*, Q. Wang, V. Granata, K. P. Kramer, Y. Sassa, S. Jöhr, D. Sutter, A. Bold, L. Das, Y. Xu, R. Frison, R. Fittipaldi, T. K. Kim, C. Cacho, J. E. Rault, P. Le Fèvre, F. Bertran, N. C. Plumb, M. Shi, A. Vecchione, M. H. Fischer, J. Chang*

npj Quantum Materials 6, 29 (2021) arXiv DOI

29. Observation of an electronic order along [110] direction in FeSe

Kunliang Bu, Wenhao Zhang, Ying Fei, Yuan Zheng, Fangzhou Ai, Zongxiu Wu, Qisi Wang, Hongliang Wo, Jun Zhao, Yi Yin*

Nature Communications 12, 1385 (2021) DOI

28. Oxide Fermi liquid universality revealed by electron spectroscopy

M. Horio*, K. P. Kramer, Q. Wang, A. Zaidan, K. von Arx, D. Sutter, C. E. Matt, Y. Sassa, N. C. Plumb, M. Shi, A. Hanff, S. K. Mahatha, H. Bentmann, F. Reinert, S. Rohlf, F. K. Diekmann, J. Buck, M. Kalläne, K. Rossnagel, E. Rienks, V. Granata, R. Fittipaldi, A. Vecchione, T. Ohgi, T. Kawamata, T. Adachi, Y. Koike, A. Fujimori, M. Hoesch, J. Chang*

Physical Review B 102, 245153 (2020) arXiv DOI

27. Resonant inelastic x-ray scattering study of Ca₃Ru₂O₇

K. von Arx*, F. Forte, M. Horio, V. Granata, Q. Wang, L. Das, Y. Sassa, R. Fittipaldi, C. G. Fatuzzo, O. Ivashko, Y. Tseng, E. Paris, A. Vecchione, T. Schmitt, M. Cuoco, J. Chang*

Physical Review B 102, 235104 (2020) arXiv DOI

26. High-Temperature Charge-Stripe Correlations in La_1.675Eu_0.2Sr_0.125CuO₄

Qisi Wang*, M. Horio, K. von Arx, Y. Shen, D. John Mukkattukavil, Y. Sassa, O. Ivashko, C. E. Matt, S. Pyon, T. Takayama, H. Takagi, T. Kurosawa, N. Momono, M. Oda, T. Adachi, S. M. Haidar, Y. Koike, Y. Tseng, W. Zhang, J. Zhao, K. Kummer, M. Garcia-Fernandez, Ke-Jin Zhou, N. B. Christensen, H. M. Rønnow, T. Schmitt, J. Chang*

Physical Review Letters 124, 187002 (2020) arXiv DOI

25. Neutron scattering studies on unconventional superconductors

Hongliang Wo, Qisi Wang, Yao Shen, Jun Zhao*

Wuli (物理) 48, 790 (2019) DOI

24. Study of intrinsic defect states of FeSe with scanning tunneling microscopy

Kunliang Bu, Bo Wang, Wenhao Zhang, Ying Fei, Yuan Zheng, Fangzhou Ai, Zongxiu Wu, Qisi Wang, Hongliang Wo, Jun Zhao, Chuanhong Jin, Yi Yin*

Physical Review B 100, 155127 (2019) arXiv DOI

23. Quantitative characterization of short-range orthorhombic fluctuations in FeSe through pair distribution function analysis

B. A. Frandsen*, Qisi Wang, Shan Wu, Jun Zhao, R. J. Birgeneau

Physical Review B 100, 020504(R) (2019) arXiv DOI

22. Coexistence of ferromagnetic and stripe-type antiferromagnetic spin fluctuations in YFe₂Ge₂

Hongliang Wo^#, Qisi Wang^#, Yao Shen^#, Xiaowen Zhang, Yiqing Hao, Yu Feng, Shoudong Shen, Zheng He, Bingying Pan, Wenbin Wang, K. Nakajima, S. Ohira-Kawamura, P. Steffens, M. Boehm, K. Schmalzl, T. R. Forrest, M. Matsuda, Yang Zhao, J. W. Lynn, Zhiping Yin, Jun Zhao*

Physical Review Letters 122, 217003 (2019) arXiv DOI

21. Evidence of nodal gap structure in the basal plane of the FeSe superconductor

P. K. Biswas*, A. Kreisel, Qisi Wang, D. T. Adroja, A. D. Hillier, Jun Zhao, R. Khasanov, J. Orain, A. Amato, E. Morenzoni

Physical Review B 98, 180501(R) (2018) arXiv DOI

20. Structure of spin excitations in heavily electron-doped Li_0.8Fe_0.2ODFeSe superconductors

Bingying Pan^#, Yao Shen^#, Die Hu, Yu Feng, J. T. Park, A. D. Christianson, Qisi Wang, Yiqing Hao, Hongliang Wo, Zhiping Yin, T. A. Maier, Jun Zhao*

Nature Communications 8, 123 (2017) arXiv DOI

19. Measurement of Meissner effect in micro-sized Nb and FeSe crystals using an NbN nano-SQUID

Long Wu, Lei Chen*, Hao Wang, Qisi Wang, Hongliang Wo, Jun Zhao, Xiaoyu Liu, Xiaolei Wu, Zhen Wang*

Superconductor Science and Technology 30, 074011 (2017) DOI

18. Evidence for a spinon Fermi surface in a triangular-lattice quantum-spin-liquid candidate

Yao Shen, Yao-Dong Li, Hongliang Wo, Yuesheng Li, Shoudong Shen, Bingying Pan, Qisi Wang, H. C. Walker, P. Steffens, M. Boehm, Yiqing Hao, D. L. Quintero-Castro, L. W. Harriger, M. D. Frontzek, Lijie Hao, Siqin Meng, Qingming Zhang, Gang Chen*, Jun Zhao*

Nature 540, 559 (2016) arXiv DOI

17. Highly anisotropic and twofold symmetric superconducting gap in nematically ordered FeSe_0.93S_0.07

H. C. Xu, X. H. Niu, D. F. Xu, J. Jiang, Q. Yao, Q. Y. Chen, Q. Song, M. Abdel-Hafiez, D. A. Chareev, A. N. Vasiliev, Q. S. Wang, H. L. Wo, J. Zhao, R. Peng*, D. L. Feng*

Physical Review Letters 117, 157003 (2016) DOI

16. Magnetic ground state of FeSe

Qisi Wang^#, Yao Shen^#, Bingying Pan^#, Xiaowen Zhang, K. Ikeuchi, K. Iida, A. D. Christianson, H. C. Walker, D. T. Adroja, M. Abdel-Hafiez, Xiaojia Chen, D. A. Chareev, A. N. Vasiliev, Jun Zhao*

Nature Communications 7, 12182 (2016) arXiv DOI

15. Transition from sign-reversed to sign-preserved Cooper-pairing symmetry in sulfur-doped iron selenide superconductors

Qisi Wang, J. T. Park*, Yu Feng, Yao Shen, Yiqing Hao, Bingying Pan, J.W. Lynn, A. Ivanov, Songxue Chi, M. Matsuda, Huibo Cao, R. J. Birgeneau, D. V. Efremov, Jun Zhao*

Physical Review Letters 116, 197004 (2016) arXiv DOI

14. Structural and magnetic phase diagram of CrAs and its relationship with pressure-induced superconductivity

Yao Shen^#, Qisi Wang^#, Yiqing Hao^#, Bingying Pan, Yu Feng, Qingzhen Huang, L. W. Harriger, J. B. Leao, Yang Zhao, R. M. Chisnell, J. W. Lynn, Huibo Cao, Jiangping Hu, Jun Zhao*

Physical Review B 93, 060503(R) (2016) arXiv DOI

13. Electronic structure of YFe2Ge2 studied by angle-resolved photoemission spectroscopy

D. F. Xu, D. W. Shen*, D. Zhu, J. Jiang, B. P. Xie, Q. S. Wang, B. Y. Pan, P. Dudin, T. K. Kim, M. Hoesch, J. Zhao, X. G. Wan, D. L. Feng*

Physical Review B 93, 024506 (2016) DOI

12. Unexpected low thermal conductivity and large power factor in Dirac semimetal Cd₃As₂

Cheng Zhang, Tong Zhou, Sihang Liang, Junzhi Cao, Xiang Yuan, Yanwen Liu, Yao Shen, Qisi Wang, Jun Zhao, Zhongqin Yang, Faxian Xiu*

Chinese Physics B 25, 017202 (2016) DOI

11. Strong interplay between stripe spin fluctuations, nematicity and superconductivity in FeSe

Qisi Wang, Yao Shen, Bingying Pan, Yiqing Hao, Mingwei Ma, Fang Zhou, P. Steffens, K. Schmalzl, T. R. Forrest, M. Abdel-Hafiez, Xiaojia Chen, D. A. Chareev, A. N. Vasiliev, P. Bourges, Y. Sidis, Huibo Cao, Jun Zhao*

Nature Materials 15, 159 (2016) arXiv DOI

10. Landau level splitting in Cd₃As₂ under high magnetic fields

Junzhi Cao^#, Sihang Liang^#, Cheng Zhang^#, Yanwen Liu, Junwei Huang, Zhao Jin, Zhi-Gang Chen, Zhijun Wang, Qisi Wang, Jun Zhao, Shiyan Li, Xi Dai, Jin Zou, Zhengcai Xia, Liang Li, Faxian Xiu*

Nature Communications 6, 7779 (2015) arXiv DOI