Publications 2022

Spiral magnetism, spin flop, and pressure-induced ferromagnetism in the negative charge-transfer-gap insulator Sr₂FeO₄
Peter Adler, Manfred Reehuis, Norbert Stüßer, Sergey A. Medvedev, Michael Nicklas, Darren C. Peets, Joel Bertinshaw, Christian Kolle Christensen, Martin Etter, Andreas Hoser, Liane Schröder, Patrick Merz, Walter Schnelle, Armin Schulz, Qingge Mu, Dimitrios Bessas, Aleksandr Chumakov, Martin Jansen, and Claudia Felser
Phys. Rev. B 105, 054417 (2022)

Dependence of Tc of YBa₂Cu₃O_6.67 on in-plane uniaxial stress
Mark E. Barber, Hun-ho Kim, Toshinao Loew, Matthieu Le Tacon, Matteo Minola, Marcin Konczykowski, Bernhard Keimer, Andrew P. Mackenzie, and Clifford W. Hicks
Phys. Rev. B 106, 184516 (2022)

Neighbours in charge
Eva Benckiser, Matthias Hepting and Bernhard Keimer
Nature Materials, 1476-1122 (2022)

Complementary Insights from Neutron and Resonant X-Ray Reflectometry for the Study of Perovskite TransitionMetal Oxide Heterostructures
Eva Benckiser, Yury Khaydukov, Laura Guasco, Katrin Fürsich, Padma Radhakrishnan, Gideok Kim and Bernhard Keimer
Phys. Status Solidi B 259, 2100253 (2022)

Imaging mesoscopic antiferromagnetic spin textures in the dilute limit from single-geometry resonant coherent x-ray diffraction
Martin Bluschke, Rourav Basak, Andi Barbour, Ashley N. Warner, Katrin Fürsich, Stuart Wilkins, Sujoy Roy, James Lee, Georg Christiani, Gennady Logvenov, Matteo Minola, Bernhard Keimer, Claudio Mazzoli, Eva Benckiser, Alex Frano
Science Advances 8, eabn6882 (2022)

Effect of pseudogap on electronic anisotropy in the strain dependence of the superconducting T_c of underdoped YBa₂Cu₃O_y
M. Frachet, Daniel J. Campbell, Anne Missiaen, S. Benhabib, Francis Laliberté, B. Borgnic, T. Loew, J. Porras, S. Nakata, B. Keimer, M. Le Tacon, Cyril Proust, I. Paul, and David LeBoeuf
Phys. Rev. B 105, 045110 (2022)

Oxygen Hole Character and Lateral Homogeneity in PrNiO_2+δ Thin Films
K. Fürsich, R. Pons, M. Bluschke, R. A. Ortiz, S. Wintz, E. Schierle, M. Weigand, G. Logvenov, G. Schütz, B. Keimer, E. Benckiser
Front. Phys. 9, 810220 (2022)

Emergent Magnetic fan Structures in Manganite Homojunction Arrays
Laura Guasco, Yury Khaydukov, Gideok Kim, Thomas Keller, Alexei Vorobiev, Anton Devishvili, Peter Wochner, Georg Christiani, Gennady Logvenov, Bernhard Keimer
Advanced Materials 34, 2202971 (2022)

Resonant neutron reflectometry for hydrogen detection
L. Guasco, Yu. N. Khaydukov, S. Pütter, L. Silvi, M. A. Paulin, T. Keller, B. Keimer
Nature Communications 13, 1486 (2022)

Soft X-Ray Spectroscopy of Low-Valence Nickelates
Matthias Hepting, Mark P. M. Dean, Wei-Sheng Lee
Front. Phys. 9, 808683 (2022)

Gapped Collective Charge Excitations and Interlayer Hopping in Cuprate Superconductors
M. Hepting, M. Bejas, A. Nag, H. Yamase, N. Coppola, D. Betto, C. Falter, M. Garcia-Fernandez, S. Agrestini, Ke-Jin Zhou, M. Minola, C. Sacco, L. Maritato, P. Orgiani, H. I. Wei, K. M. Shen, D. G. Schlom, A. Galdi, A. Greco, and B. Keimer
Phys. Rev. Lett. 129, 047001 (2022)

Amplification of Superconducting Fluctuations in Driven YBa₂Cu₃O_6+x
A. von Hoegen, M. Fechner, M. Först, N. Taherian, E. Rowe, A. Ribak, J. Porras, B. Keimer, M. Michael, E. Demler, and A. Cavalleri
Phys. Rev. X 12, 031008 (2022)

Characterization of photoinduced normal state through charge density wave in superconducting YBa₂Cu₃O_6.67
Hoyoung Jang, Sanghoon Song,Takumi Kihara, Yijin Liu, Sang-Jun Lee, Sang-Youn Park, Minseok Kim, Hyeong-Do Kim, Giacomo Coslovich, Suguru Nakata, Yuya Kubota, Ichiro Inoue, Kenji Tamasaku, Makina Yabashi, Heemin Lee, Changyong Song, Hiroyuki Nojiri, Bernhard Keimer, Chi-Chang Kao, Jun-Sik Lee
Sci. Adv. 8, eabk0832 (2022)

Theoretical analysis of resonant inelastic x-ray scattering spectra of Ca₂RuO₄
Hoon Kim, Giniyat Khaliullin, B. J. Kim
Phys. Rev. B 106, 245127 (2022)

Sr₂IrO₄/Sr₃Ir₂O₇ superlattice for a model two-dimensional quantum Heisenberg antiferromagnet
Hoon Kim, Joel Bertinshaw, J. Porras, B. Keimer, Jungho Kim, J.-W. Kim, Jimin Kim, Jonghwan Kim, Gahee Noh, Gi-Yeop Kim, Si-Young Choi, and B. J. Kim
Phys. Rev. Research 4, 013229 (2022)

Giant stress response of terahertz magnons in a spin-orbit Mott insulator
Hun-Ho Kim, Kentaro Ueda, Suguru Nakata, Peter Wochner, Andrew Mackenzie, Clifford Hicks, Giniyat Khaliullin, Huimei Liu, Bernhard Keimer, Matteo Minola
Nature Communications 13, 6674 (2022)

Superconductivity in (Ba,K)SbO₃
Minu Kim, Graham M. McNally, Hun-Ho Kim, Mohamed Oudah, Alexandra S. Gibbs, Pascal Manuel, Robert J. Green, Ronny Sutarto, Tomohiro Takayama, Alexander Yaresko, Ulrich Wedig, Masahiko Isobe, Reinhard K. Kremer, D. A. Bonn, Bernhard Keimer, Hidenori Takagi
Nature Materials 21, 627-633 (2022)

Visualizing the unusual spectral weight transfer in DyBa₂Cu₃O_7–δ thin film
Hui Li, Zengyi Du, Ze‑Bin Wu, Daniel Putzky, Sang Hyun Joo, Asish K. Kundu, Xiaotao Xu, Xiaoyan Shi, Jinho Lee, Abhay N. Pasupathy, Gennady Logvenov, Bernhard Keimer, Tonica Valla, Ivan Božović, Ilya K. Drozdov, Kazuhiro Fujita
Scientific Reports 12, 830 (2022)

Exchange interactions in d⁵ Kitaev materials: From Na₂IrO₃ to α−RuCl₃
Huimei Liu, Jiří Chaloupka, and Giniyat Khaliullin
Phys. Rev. B 105, 214411 (2022)

Normal-state charge transport in YBa₂Cu₃O_6.67 under uniaxial stress
S. Nakata, P.Yang, M. E. Barber, K. Ishida, H.-H. Kim, T.Loew, M. Le Tacon, A. P. Mackenzie, M. Minola, C. W. Hicks, B. Keimer
npj Quantum Materials volume 7, 118 (2022)

Magnetic correlations in infinite-layer nickelates: An experimental and theoretical multimethod study
R. A. Ortiz, P. Puphal, M. Klett, F. Hotz, R. K. Kremer, H. Trepka, M. Hemmida, H.-A. Krug von Nidda, M. Isobe, R. Khasanov, H. Luetkens, P. Hansmann, B. Keimer, T. Schäfer, and M. Hepting
Phys. Rev. Research 4, 023093 (2022)

Investigation of Hydrogen Incorporations in Bulk Infinite-Layer Nickelates
P. Puphal, V. Pomjakushin, R. A. Ortiz, S. Hammoud, M. Isobe, B. Keimer, M. Hepting
Front. Phys. 10, 842578 (2022)

Coupling of electronic and structural degrees of freedom in vanadate superlattices
P. Radhakrishnan, B. Geisler, K. Fürsich, D. Putzky, Y. Wang, G. Christiani, G. Logvenov, P. Wochner, P. A. van Aken, R. Pentcheva, and E. Benckiser
Phys. Rev. B 105, 165117 (2022)

Absence of temperature-dependent phonon anomalies in Sr₂IrO₄ and Sr₃Ir₂O₇
K. Sen, R. Heid, S. M. Souliou, D. Boll, A. Bosak, N. H. Sung, J. Bertinshaw, H. Gretarsson, B. J. Kim, F. Weber, and M. Le Tacon
Phys. Rev. B 105, 045142 (2022)

Emergent interlayer magnetic order via strain-induced orthorhombic distortion in the 5d Mott insulator Sr₂IrO₄
S. Shrestha, M. Krautloher, M. Zhu, J. Kim, J. Hwang, J. Kim, J.-W. Kim, B. Keimer, and A. Seo
Phys. Rev. B 105, 100404 (2022)

Competing spin-orbital singlet states in the 4d⁴ honeycomb ruthenate Ag₃LiRu₂O₆
T. Takayama, M. Blankenhorn, J. Bertinshaw, D. Haskel, N. A. Bogdanov, K. Kitagawa, A. N. Yaresko, A. Krajewska, S. Bette, G. McNally, A. S. Gibbs, Y. Matsumoto, D. P. Sari, I. Watanabe, G. Fabbris, W. Bi, T. I. Larkin, K. S. Rabinovich, A. V. Boris, H. Ishii, H. Yamaoka, T. Irifune, R. Bewley, C. J. Ridley, C. L. Bull, R. Dinnebier, B. Keimer, H. Takagi
Phys. Rev. Research 4, 043079 (2022)

Critical magnetic fluctuations in the layered ruthenates Ca₂RuO₄ and Ca₃Ru₂O₇
H. Trepka, T. Keller, M. Krautloher, J. Xu, K. Habicht, M. Böhm, B. Keimer, and M. Hepting
Phys. Rev. Research 4, 023181 (2022)

Paramagnons and high-temperature superconductivity in a model family of cuprates
Lichen Wang, Guanhong He, Zichen Yang, Mirian Garcia-Fernandez, Abhishek Nag, Kejin Zhou, Matteo Minola, Matthieu Le Tacon, Bernhard Keimer, Yingying Peng, Yuan Li
Nature Communications 13, 3163 (2022)

Ruddlesden–Popper Faults in NdNiO₃ Thin Films
Chao Yang, Yi Wang, Daniel Putzky, Wilfried Sigle, Hongguang Wang, Roberto A. Ortiz, Gennady Logvenov, Eva Benckiser, Bernhard Keimer, Peter A. van Aken
Symmetry 14(3), 464 (2022)