Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Oleg, Janson"'
Autor:
Liang Si, Eric Jacob, Wenfeng Wu, Andreas Hausoel, Juraj Krsnik, Paul Worm, Simone Di Cataldo, Oleg Janson, Karsten Held
Publikováno v:
Physical Review Research, Vol 6, Iss 4, p 043104 (2024)
Conflicting theoretical scenarios for infinite-layer nickelate superconductors have been hotly debated, particularly regarding whether only a single Ni-3d_{x^{2}−y^{2}} band is relevant at low energies besides electron pockets or whether multiorbit
Externí odkaz:
https://doaj.org/article/ee786927b9a94c0fa38060729156d2dd
Autor:
Yang Zhang, Qiunan Xu, Klaus Koepernik, Roman Rezaev, Oleg Janson, Jakub Železný, Tomáš Jungwirth, Claudia Felser, Jeroen van den Brink, Yan Sun
Publikováno v:
npj Computational Materials, Vol 7, Iss 1, Pp 1-7 (2021)
Abstract Spin Hall effect (SHE) has its special position in spintronics. To gain new insight into SHE and to identify materials with substantial spin Hall conductivity (SHC), we performed high-precision high-throughput ab initio calculations of the i
Externí odkaz:
https://doaj.org/article/fb833fc3826e440db8d43eecfde0a81e
Autor:
Karsten Held, Liang Si, Paul Worm, Oleg Janson, Ryotaro Arita, Zhicheng Zhong, Jan M. Tomczak, Motoharu Kitatani
Publikováno v:
Frontiers in Physics, Vol 9 (2022)
We review the electronic structure of nickelate superconductors with and without effects of electronic correlations. As a minimal model, we identify the one-band Hubbard model for the Ni 3dx2−y2 orbital plus a pocket around the A-momentum. The latt
Externí odkaz:
https://doaj.org/article/b34c7f7866604fe5bd7dd65b8a220fd9
Autor:
Yingying Peng, Xuefei Guo, Qian Xiao, Qizhi Li, Jörg Strempfer, Yongseong Choi, Dong Yan, Huixia Luo, Yuqing Huang, Shuang Jia, Oleg Janson, Peter Abbamonte, Jeroen van den Brink, Jasper van Wezel
Publikováno v:
Physical Review Research, Vol 4, Iss 3, p 033053 (2022)
Besides magnetic and charge order, regular arrangements of orbital occupation constitute a fundamental order parameter of condensed matter physics. Even though orbital order is difficult to identify directly in experiments, its presence was firmly es
Externí odkaz:
https://doaj.org/article/480b45fa68d2400297714f7851fae5b0
Autor:
Yang Zhang, Qiunan Xu, Klaus Koepernik, Roman Rezaev, Oleg Janson, Jakub Železný, Tomáš Jungwirth, Claudia Felser, Jeroen van den Brink, Yan Sun
Publikováno v:
npj Computational Materials, Vol 7, Iss 1, Pp 1-2 (2021)
Externí odkaz:
https://doaj.org/article/210f7df3dc0d47e0836b500dfbd5e06e
Autor:
Anton A. Kulbakov, Denys Y. Kononenko, Satoshi Nishimoto, Quirin Stahl, Aswathi Mannathanath Chakkingal, Manuel Feig, Roman Gumeniuk, Yurii Skourski, Lakshmi Bhaskaran, Sergei A. Zvyagin, Jan Peter Embs, Inés Puente-Orench, Andrew Wildes, Jochen Geck, Oleg Janson, Dmytro S. Inosov, Darren C. Peets
Publikováno v:
Physical Review B. 106
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee88f2af7a0cb630921d8e31a3e992e7
https://doi.org/10.1103/physrevb.106.l020405
https://doi.org/10.1103/physrevb.106.l020405
Publikováno v:
npj Quantum Materials, Vol 5, Iss 1, Pp 1-6 (2020)
The recently discovered nickelate superconductors appear, at first glance, to be even more complicated multi-orbital systems than cuprates. To identify the simplest model describing the nickelates, we analyse the multi-orbital system and find that it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doajarticles::86b3cc2866f3fed640cb83b88f75bce3
http://link.springer.com/article/10.1038/s41535-020-00260-y
http://link.springer.com/article/10.1038/s41535-020-00260-y
Autor:
Gohil S. Thakur, Thomas C. Hansen, Walter Schnelle, Shuping Guo, Oleg Janson, Jeroen van den Brink, Claudia Felser, Martin Jansen
Synthesis, crystal structure and magnetic properties of a new 2:1 ordered triple perovskite Sr3CaOs2O9 are reported. The compound crystallizes in P21/c space group and features a unique buckled honeycomb lattice of osmium. It exhibits long-range anti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70e830882007b9951a3a84d4d717753a
Publikováno v:
Physical Review B. 104
The kagome Hubbard model (KHM) is a paradigmatic example of a frustrated two-dimensional model. While its strongly correlated regime, described by a Heisenberg model, is of topical interest due to its enigmatic prospective spin-liquid ground state, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1be3b988ed1512d044dbbecc45d6daea
https://doi.org/10.1103/physrevb.104.165127
https://doi.org/10.1103/physrevb.104.165127
Autor:
Vladislav Kataev, W. Roscher, Oleg Janson, Ruidan Zhong, Bernd Büchner, J. van den Brink, J. Zeisner, C. Wellm, Roland Hayn, R. J. Cava, A. Savoyant, A. Alfonsov
Publikováno v:
Physical Review B. 104
Triangular Heisenberg antiferromagnets are prototypes of geometric frustration, even if for nearest-neighbor interactions quantum fluctuations are not usually strong enough to destroy magnetic ordering: stronger frustration is required to stabilize a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7d59a020d5844fbcae6c3a7ab7f3731
https://doi.org/10.1103/physrevb.104.l100420
https://doi.org/10.1103/physrevb.104.l100420