Zobrazeno 1 - 10
of 443
pro vyhledávání: '"Bernhard Keimer"'
Autor:
Mohamed Oudah, Hsiang-Hsi Kung, Samikshya Sahu, Niclas Heinsdorf, Armin Schulz, Kai Philippi, Marta-Villa De Toro Sanchez, Yipeng Cai, Kenji Kojima, Andreas P. Schnyder, Hidenori Takagi, Bernhard Keimer, Doug A. Bonn, Alannah M. Hallas
Publikováno v:
npj Quantum Materials, Vol 9, Iss 1, Pp 1-11 (2024)
Abstract We present an exploration of the effect of electron-phonon coupling and broken inversion symmetry on the electronic and thermal properties of the semimetal LaRhGe3. Our transport measurements reveal evidence for electron-hole compensation at
Externí odkaz:
https://doaj.org/article/e45326d7d6f9490597589917998b1a43
Autor:
Yu-Mi Wu, Pascal Puphal, Masahiko Isobe, Bernhard Keimer, Matthias Hepting, Y. Eren Suyolcu, Peter A. van Aken
Publikováno v:
APL Materials, Vol 12, Iss 9, Pp 091119-091119-7 (2024)
Infinite-layer nickelates stand as a promising frontier in the exploration of unconventional superconductivity. Their synthesis through topotactic oxygen reduction from the parent perovskite phase remains a complex and elusive process. This study del
Externí odkaz:
https://doaj.org/article/f17054fe058d41c088d24d4f6c304e73
Autor:
Chao Yang, Rebecca Pons, Wilfried Sigle, Hongguang Wang, Eva Benckiser, Gennady Logvenov, Bernhard Keimer, Peter A. van Aken
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Abstract The polarity of a surface can affect the electronic and structural properties of oxide thin films through electrostatic effects. Understanding the mechanism behind these effects requires knowledge of the atomic structure and electrostatic ch
Externí odkaz:
https://doaj.org/article/83197e8bea2c46b697ad02de30ac26e4
Stabilization of U 5f^{2} configuration in UTe_{2} through U 6d dimers in the presence of Te2 chains
Autor:
Denise S. Christovam, Martin Sundermann, Andrea Marino, Daisuke Takegami, Johannes Falke, Paulius Dolmantas, Manuel Harder, Hlynur Gretarsson, Bernhard Keimer, Andrei Gloskovskii, Maurits W. Haverkort, Ilya Elfimov, Gertrud Zwicknagl, Alexander V. Andreev, Ladislav Havela, Mitchell M. Bordelon, Eric D. Bauer, Priscila F. S. Rosa, Andrea Severing, Liu Hao Tjeng
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033299 (2024)
We investigate the topological superconductor candidate UTe_{2} using high-resolution valence-band resonant inelastic x-ray scattering at the U M_{4,5} edges. We observe atomiclike low-energy excitations that support the correlated nature of this unc
Externí odkaz:
https://doaj.org/article/bf36752982664eefa9b6db8c24ff2166
Autor:
Valentin Zimmermann, Arvind Kumar Yogi, Deniz Wong, Christian Schulz, Maciej Bartkowiak, Klaus Habicht, Lichen Wang, Masahiko Isobe, Matteo Minola, Giniyat Khaliullin, Bernhard Keimer, Matthias Hepting
Publikováno v:
npj Quantum Materials, Vol 8, Iss 1, Pp 1-8 (2023)
Abstract Collective excitations such as plasmons and paramagnons are fingerprints of atomic-scale Coulomb and exchange interactions between conduction electrons in metals. The strength and range of these interactions, which are encoded in the excitat
Externí odkaz:
https://doaj.org/article/07403ff4c77e4778bdf44a99098bb168
Autor:
Andrea Marino, Denise S. Christovam, Daisuke Takegami, Johannes Falke, Miguel M. F. Carvalho, Takaki Okauchi, Chun-Fu Chang, Simone G. Altendorf, Andrea Amorese, Martin Sundermann, Andrei Gloskovskii, Hlynur Gretarsson, Bernhard Keimer, Alexandr V. Andreev, Ladislav Havela, Andreas Leithe-Jasper, Andrea Severing, Jan Kuneš, Liu Hao Tjeng, Atsushi Hariki
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033068 (2024)
A procedure for quantifying the U 5f electronic covalency and degree of localization in U intermetallic compounds is presented. To this end, bulk sensitive hard and soft x-ray photoelectron spectroscopy were utilized in combination with density-funct
Externí odkaz:
https://doaj.org/article/98d18b875864434090e003b06f2e6f4f
Autor:
Hao Chu, Sergey Kovalev, Zi Xiao Wang, Lukas Schwarz, Tao Dong, Liwen Feng, Rafael Haenel, Min-Jae Kim, Parmida Shabestari, Le Phuong Hoang, Kedar Honasoge, Robert David Dawson, Daniel Putzky, Gideok Kim, Matteo Puviani, Min Chen, Nilesh Awari, Alexey N. Ponomaryov, Igor Ilyakov, Martin Bluschke, Fabio Boschini, Marta Zonno, Sergey Zhdanovich, Mengxing Na, Georg Christiani, Gennady Logvenov, David J. Jones, Andrea Damascelli, Matteo Minola, Bernhard Keimer, Dirk Manske, Nanlin Wang, Jan-Christoph Deinert, Stefan Kaiser
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
Cuprate superconductors are known for their intertwined interactions and coexistence of competing orders. Here, the authors observe a Fano resonance in the nonlinear THz response of La2-xSrxCuO4, which may arise from a coupling between superconductin
Externí odkaz:
https://doaj.org/article/b4f04f7813554566b2a23916cd9d0839
Autor:
Hun-Ho Kim, Kentaro Ueda, Suguru Nakata, Peter Wochner, Andrew Mackenzie, Clifford Hicks, Giniyat Khaliullin, Huimei Liu, Bernhard Keimer, Matteo Minola
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-6 (2022)
There has been significant interest in using spin-waves or magnons for information processing, due to their low energy dissipation and short wavelength at terahertz frequencies, however, manipulating magnons can be challenging. Here, Kim et al show t
Externí odkaz:
https://doaj.org/article/64390dc98043470ab1efc2f3c71c035b
Autor:
Lichen Wang, Guanhong He, Zichen Yang, Mirian Garcia-Fernandez, Abhishek Nag, Kejin Zhou, Matteo Minola, Matthieu Le Tacon, Bernhard Keimer, Yingying Peng, Yuan Li
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
Abstract Cuprate superconductors have the highest critical temperatures (T c) at ambient pressure, yet a consensus on the superconducting mechanism remains to be established. Finding an empirical parameter that limits the highest reachable T c can pr
Externí odkaz:
https://doaj.org/article/dc047100193847f7a7d008639ca47a62
Autor:
Fryderyk Lyzwa, Yurii G. Pashkevich, Premysl Marsik, Andrei Sirenko, Andrew Chan, Benjamin P. P. Mallett, Meghdad Yazdi-Rizi, Bing Xu, Luis M. Vicente-Arche, Diogo C. Vaz, Gervasi Herranz, Maximilien Cazayous, Pierre Hemme, Katrin Fürsich, Matteo Minola, Bernhard Keimer, Manuel Bibes, Christian Bernhard
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-8 (2022)
The electronic properties of complex oxide heterostructures are governed by the physics at the interface between the different materials. Here, the authors use infrared ellipsometry and confocal Raman spectroscopy to show the presence of non-collinea
Externí odkaz:
https://doaj.org/article/0f0652a5fd0e43e3806ddd3c1460c5b6