Laboratory for Quantum Matter Research
Johan Chang


15 - Collective spin excitations in trilayer nickelate La$_4$Ni$_3$O$_{10}$
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 (2026)
14 - Correlated charge order intertwined with time-reversal symmetry-breaking nodal superconductivity in the dual flat band kagome superconductor CeRu$_{3}$Si$_{2}$
O. Gerguri, P. Kràl, M. Spitaler, M. Salamin, J. N. Graham, A. Doll, I. Biało, I. Plokhikh, J. Krieger, T. J. Hicken, J. Oppliger, L. Martinelli, A. Steppke, N. Shepelin, R. Khasanov, M. v. Zimmermann, B. Monserrat, H. Luetkens, J. Chang, F. O. von Rohr, Sun-Woo Kim, Z. Guguchia
arXiv: 2603.27408 (2026)
13 - The stripe state at 1/8 Ba doping hosts optimal superconductivity in La-214 cuprates under low in-plane stress
V. Sazgari, S. S. Islam, M. Lamotte, J. N. Graham, O. Gerguri, P. Kràl, I. Maetsu, T. Shiroka, G. Simutis, R. Khasanov, R. Sarkar, A. Steppke, N. A. Shepelin, M. Müller, M. Bartkowiak, M. Janoschek, J. Chang, H. H. Klauss, T. Adachi, G. D. Gu, J. M. Tranquada, H. Luetkens, Z. Guguchia
arXiv: 2603.14108 (2026)
12 - Ambipolar doping-induced surface in-gap state on Mott-insulating Ca$_2$RuO$_4$
M. Horio, T. Wada, V. Granata, R. Fittipaldi, A. Vecchione, J. Chang, I. Matsuda
arXiv: 2602.15610 (2026)
11 - Divergent Pressure Response of Superconductivity in Sc$_{6}$MTe$_{2}$ ($M$ = Fe, Ru and Ir)
J. N. Graham, S. S. Islam, K. Yuchi, P. Král, O. Gerguri, S. Huber, J. Chang, R. Khasanov, Y. Okamoto, Z. Guguchia
arXiv: 2601.15414 (2026)
10 - Orbital Separation of Charge Order and Superconductivity in La2-xSrxCuO4
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 (2026)
9 - Extreme Strain Controlled Correlated Metal-Insulator Transition in the Altermagnet CrSb
Cong Li, Mengli Hu, Jianfeng Zhang, Magnus H. Berntsen, Francesco Scali, Dibya Phuyal, Chun Lin, Wanyu Chen, Johan Chang, Oliver J. Clark, Timur K. Kim, Jacek Osiecki, Craig Polley, Balasubramanian Thiagarajan, Zhilin Li, Tao Xiang, Oscar Tjernberg
arXiv: 2512.07683 (2025)
8 - Impact of Electron Correlations on Infinite-Layer Cuprates and Nickelates
Xunyang Hong, Yuetong Wu, Ying Chan, Sze Tung Li, I. Biało, L. Martinelli, 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
arXiv: 2511.09460 (2025)
7 - Differentiation of Site-Specific Symmetry Breaking Orders in Y$_{1-x}$Pr$_x$Ba$_2$Cu$_3$O$_{6+y}$
L. Martinelli, S. Rüdiger, I. Bialo, J. Oppliger, F. Igoa Saldana, M. v. Zimmermann, E. Weschke, R. Arpaia, J. Chang
arXiv: 2507.20640 (2025)
6 - 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
arXiv: 2507.18373 (2025)
5 - Distinct Uniaxial Stress and Pressure Fingerprint of Superconductivity in the 3D Kagome Lattice Compound CeRu2
O. Gerguri, D. Das, V. Sazgari, H. X. Liu, C. Mielke III, P. Kràl, S. S. Islam, J. N. Graham, V. Grinenko, R. Sarkar, T. Shiroka, J. -X. Yin, J. Chang, R. Thomale, H. H. Klauss, R. Khasanov, Y. Shi, H. Luetkens, Z. Guguchia
arXiv: 2507.09779 (2025)
4 - Concurrent Multifractality and Anomalous Hall Response in the Nodal Line Semimetal Fe$_3$GeTe$_2$ 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 (2025)
3 - 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 (2025)
2 - Searching for the signature of a pair density wave in YBa2Cu3O6.67 using high energy X-ray diffraction
E. Blackburn, O. Ivashko, E. Campillo, M. von Zimmermann, R. Liang, D. A. Bonn, W. N. Hardy, J. Chang, E. M. Forgan, S. M. Hayden
arXiv: 2310.18302 (2023)
1 - Bulk charge stripe order competing with superconductivity in La2-xSrxCuO4 (x=0.12)
N. B. Christensen, J. Chang, J. Larsen, M. Fujita, M. Oda, M. Ido, N. Momono, E. M. Forgan, A. T. Holmes, J. Mesot, M. Huecker, M. v. Zimmermann
arXiv: 1404.3192 (2014)