Publications 2024

Plasmon dispersion in bilayer cuprate superconductors
M. Bejas, V. Zimmermann, D. Betto, T. D. Boyko, R. J. Green, T. Loew, N. B. Brookes, G. Cristiani, G. Logvenov, M. Minola, B. Keimer, H. Yamase, A. Greco, and M. Hepting
Phys. Rev. B 109, 144516 (2024)

Ultrafast Raman thermometry in driven YBa_2⁢C⁢u₃⁢O_6.48
T.-H. Chou, M. Först, M. Fechner, M. Henstridge, S. Roy, M. Buzzi, D. Nicoletti, Y. Liu, S. Nakata, B. Keimer, and A. Cavalleri
Phys. Rev. B 132, 195141 (2024)

𝐽= 1/2 pseudospins and 𝑑−𝑝 hybridization in the Kitaev spin liquid candidates Ru⁢𝑋₃ (𝑋=Cl, Br, I)
H. Gretarsson, H. Fujihara, F. Sato, H. Gotou, Y. Imai, K. Ohgushi, B. Keimer, and H. Suzuki
Phys. Rev. B 109, L180413 (2024)

Investigation of spin excitations and charge order in bulk crystals of the infinite-layer nickelate LaNiO₂
S. Hayashida, V. Sundaramurthy, P. Puphal, M. Garcia-Fernandez, Ke-Jin Zhou, B. Fenk, M. Isobe, M. Minola, Y.-M. Wu, Y. E. Suyolcu, P. A. van Aken, B. Keimer, and M. Hepting
Phys. Rev. B 109, 235106 (2024)

Tracing the dynamics of superconducting order via transient terahertz third-harmonic generation
Min-Jae Kim, Sergey Kovalev, Mattia Udina, Rafael Haenel, Gideok Kim, Matteo Puviani, Georg Cristiani, Igor Ilyakov, Thales V. A. G. De Oliveira, Alexey Ponomaryov, Jan-Christoph Deinert, Gennady Logvenov, Berhard Keimer, Dirk Manske, Lara Benfatto, and Stefan Kaiser
Science Advances 10 (2024)

Epitaxial superlattices as a framework for stabilizing different LaNiO₃ structures
F. Misják, R. A. Ortiz, D. Geiger, M. K. Kinyanjui, E. Schierle, K. Fürsich, G. Christiani, G. Logvenov, B. Keimer, U. Kaiser, and E. Benckiser
Phys. Rev. Materials 8, 065001 (2024)

Epitaxial growth and stoichiometry control of pyrochlore Nd₂ Ru₂ O₇ thin films
K. S. Rabinovich, G. Kim, A. N. Yaresko, G. Christiani, G. Logvenov, B. Keimer, and A. V. Boris
Phys. Rev. Materials 8, 053801 (2024)

Detection of a two-phonon mode in a cuprate superconductor via polarimetric resonant inelastic x-ray scattering
K. Scott, E. Kisiel, F. Yakhou, S. Agrestini, M. Garcia-Fernandez, K. Kummer, J. Choi, R. D. Zhong, J. A. Schneeloch, G. D. Gu, Ke-Jin Zhou, N. B. Brookes, A. F. Kemper, M. Minola, F. Boschini, A. Frano, A. Gozar, and E. H. da Silva Neto
Phys. Rev. B 109, 125126 (2024)

Exploring magnetic anisotropy and robustness of the J_eff=1/2 state under substantial orthorhombic distortion in Sr₂IrO₄ thin films
S. Shrestha, Y. Choi, M. Krautloher, M. Zhu, J. Hwang, B. Keimer, A. Seo, and J.-W. Kim
Phys. Rev. B 109, 104415 (2024)

Using strain to uncover the interplay between two- and three-dimensional charge density waves in high-temperature superconducting YBa2Cu₃Oy
I. Vinograd, S. M. Souliou, A.-A. Haghighirad, T. Lacmann, Y. Caplan, M. Frachet, M. Merz, G. Garbarino, Y. Liu, S. Nakata, K. Ishida, H. M. L. Noad, M. Minola, B. Keimer, D. Orgad, C. W. Hicks, and M. Le Tacon
Nature Communications 15, 3277 (2024)

Spin-Orbit Excitons in a Correlated Metal: Raman Scattering Study of Sr₂RhO₄
Lichen Wang, Huimei Liu, Valentin Zimmermann, Arvind Kumar Yogi, Masahiko Isobe, Matteo Minola, Matthias Hepting, Giniyat Khaliullin, and Bernhard Keimer
Phys. Rev. Lett. 132, 116502 (2024)

Direct observation of strong surface reconstruction in partially reduced nickelate films
Chao Yang, Rebecca Pons, Wilfried Sigle, Hongguang Wang, Eva Benckiser, Gennady Logvenov, Bernhard Keimer, and Peter A. van Aken
Nature Communications 15, 378 (2024)