Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Steffen Sykora"'
Autor:
Christoph Wuttke, Federico Caglieris, Steffen Sykora, Frank Steckel, Xiaochen Hong, Sheng Ran, Seunghyun Khim, Rhea Kappenberger, Sergey L. Bud’ko, Paul C. Canfield, Sabine Wurmehl, Saicharan Aswartham, Bernd Büchner, Christian Hess
Publikováno v:
npj Quantum Materials, Vol 7, Iss 1, Pp 1-10 (2022)
Abstract The role of nematic fluctuations for unconventional superconductivity has been the subject of intense discussions for many years. In iron-based superconductors, the most established probe for electronic-nematic fluctuations, i.e. the elastor
Externí odkaz:
https://doaj.org/article/15a00fd2e54d4344ae174c7469408b90
Autor:
Xiaochen Hong, Steffen Sykora, Federico Caglieris, Mahdi Behnami, Igor Morozov, Saicharan Aswartham, Vadim Grinenko, Kunihiro Kihou, Chul-Ho Lee, Bernd Büchner, Christian Hess
Publikováno v:
Frontiers in Physics, Vol 10 (2022)
Nematicity in heavily hole-doped iron pnictide superconductors remains controversial. Sizeable nematic fluctuations and even nematic orders far from magnetic instability were declared in RbFe2As2 and its sister compounds. Here, we report a systematic
Externí odkaz:
https://doaj.org/article/0ed8e485d5dc468cba80be29c0134520
Autor:
Steffen Sykora, Tobias Meng
Publikováno v:
SciPost Physics, Vol 13, Iss 2, p 016 (2022)
An approach to bound states based on unitary transformations of Hamiltonians is presented. The method is applied to study the interaction between electrons in a BCS $s$-wave superconductor and a quantum spin. It is shown that known results from th
Externí odkaz:
https://doaj.org/article/4e36a7b188344cd2ad9c0c430942cf13
Autor:
Zhixiang Sun, Jose M. Guevara, Steffen Sykora, Ekaterina M. Pärschke, Kaustuv Manna, Andrey Maljuk, Sabine Wurmehl, Jeroen van den Brink, Bernd Büchner, Christian Hess
Publikováno v:
Physical Review Research, Vol 3, Iss 2, p 023075 (2021)
Despite many efforts to rationalize the strongly correlated electronic ground states in doped Mott insulators, the nature of the doping-induced insulator-to-metal transition is still a subject under intensive investigation. Here, we probe the nanosca
Externí odkaz:
https://doaj.org/article/83e2803dc3e24c5fa393b0fa750cebde
Autor:
Steffen Sykora, Johannes Schoop, Lukas Graf, Grigory Shipunov, Igor V. Morozov, Saicharan Aswartham, Bernd Büchner, Christian Hess, Romain Giraud, Joseph Dufouleur
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033041 (2020)
The finite coupling between Weyl nodes due to residual disorder is investigated by magnetotransport studies in WTe_{2}. The anisotropic scattering of quasiparticles is evidenced from classical and quantum transport measurements. A theoretical approac
Externí odkaz:
https://doaj.org/article/c91c05e7a580478594d3d368d31aaa9e
Autor:
Joseph Dufouleur, Steffen Sykora, Igor Morozov, Saicharan Aswartham, G. Shipunov, Bernd Büchner, Romain Giraud, Johannes Schoop, Lukas Graf, Christian Hess
Publikováno v:
Physical Review Research
Physical Review Research, American Physical Society, 2020, ⟨10.1103/PhysRevResearch.2.033041⟩
Physical Review Research, 2020, ⟨10.1103/PhysRevResearch.2.033041⟩
Physical Review Research, American Physical Society, 2020, ⟨10.1103/PhysRevResearch.2.033041⟩
Physical Review Research, 2020, ⟨10.1103/PhysRevResearch.2.033041⟩
The finite coupling between Weyl nodes due to residual disorder is investigated by magnetotransport studies in WTe$_2$. The anisotropic scattering of quasiparticles is evidenced from classical and quantum transport measurements. A new theoretical app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf01bd77b6494371ec35eeca69cbe685
https://doi.org/10.1103/physrevresearch.2.033041
https://doi.org/10.1103/physrevresearch.2.033041
Autor:
Kaustuv Manna, Chandra Shekhar, Claudia Felser, Anja U. B. Wolter, Christian Hess, Steffen Sykora, Vicky Süss, Francesco Scaravaggi, Federico Caglieris, Christoph Wuttke, Bernd Büchner
Publikováno v:
Physical Review B
The discovery of topological quantum materials represents a striking innovation in modern condensed matter physics with remarkable fundamental and technological implications. Their classification has been recently extended to topological Weyl semimet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a68c9ac3b808a6addc80bc340190a672
https://doi.org/10.1103/physrevb.100.085111
https://doi.org/10.1103/physrevb.100.085111
Autor:
Kaustuv Manna, Steffen Sykora, A. Maljuk, Johannes Schoop, Jeroen van den Brink, Sabine Wurmehl, Zhixiang Sun, Christian Hess, Ekaterina M. Pärschke, Bernd Büchner, Jose M. Guevara
Publikováno v:
Physical Review B. 99
The motion of doped electrons or holes in an antiferromagnetic lattice with strong on-site Coulomb interactions touches one of the most fundamental open problems in contemporary condensed matter physics. The doped charge may strongly couple to elemen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dc9347625d5eaa8c7c718072c894c37
https://doi.org/10.1103/physrevb.99.121114
https://doi.org/10.1103/physrevb.99.121114
Publikováno v:
Physical Review B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=r3c4b2081b22::b1bbfa8e3966123b175e2892daad542c
Autor:
Steffen Sykora, Klaus W. Becker
Publikováno v:
Physical Review B. 98
A numerical verification of Luttinger's theorem, based on a recently developed many-body approach, is given for the Kondo-lattice model. For a two-dimensional lattice the completely localized spins $(S=1/2)$ are found to contribute to the Fermi sea v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cfc9bca34646ea03f8c21856c44072d
https://doi.org/10.1103/physrevb.98.245139
https://doi.org/10.1103/physrevb.98.245139