Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Alex Aperis"'
Autor:
M. Mofazzel Hosen, Gyanendra Dhakal, Klauss Dimitri, Pablo Maldonado, Alex Aperis, Firoza Kabir, Christopher Sims, Peter Riseborough, Peter M. Oppeneer, Dariusz Kaczorowski, Tomasz Durakiewicz, Madhab Neupane
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-7 (2018)
Abstract Topological Dirac semimetals with accidental band touching between conduction and valence bands protected by time reversal and inversion symmetry are at the frontier of modern condensed matter research. A majority of discovered topological s
Externí odkaz:
https://doaj.org/article/5790b43b313941c98e4087e05db1f58b
Autor:
M. Mofazzel Hosen, Klauss Dimitri, Ashis K. Nandy, Alex Aperis, Raman Sankar, Gyanendra Dhakal, Pablo Maldonado, Firoza Kabir, Christopher Sims, Fangcheng Chou, Dariusz Kaczorowski, Tomasz Durakiewicz, Peter M. Oppeneer, Madhab Neupane
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-8 (2018)
The existence of multiple topological phases in a single material, although theoretically possible, has not been verified. Here, the authors observe weak topological insulator surface states and a one-dimensional Dirac-node crossing surface state in
Externí odkaz:
https://doaj.org/article/dd4618eb806d46ec8ef838ac329f007a
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 012066 (2020)
We investigate phonon-mediated Cooper pairing in flat electronic band systems by solving the full-bandwidth multiband Eliashberg equations for superconductivity in magic angle twisted bilayer graphene using a realistic tight-binding model. We find th
Externí odkaz:
https://doaj.org/article/d4ffbeb5849844f597ed8fbd8c4633c0
Publikováno v:
Physical Review B. 104
Based on evolutionary crystal structure searches in combination with ab initio calculations, we predict an unusual structural phase of the superconducting ${\mathrm{LaH}}_{10}$ that is stable from about 250 to 425 GPa pressure. However, inclusion of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1f541cdf4260db2cfe4ea75e3b62e35
https://doi.org/10.1103/physrevb.104.174506
https://doi.org/10.1103/physrevb.104.174506
Publikováno v:
Physical Review B. 103
We investigate the effect of electron-phonon interactions (EPI) in systems exhibiting one or more flat electron bands close to the Fermi level and a comparatively large phonon energy scale. After solving the self-consistent full-bandwidth Eliashberg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f7a40ed49dc97ea2b308c78df1d0da6
https://doi.org/10.1103/physrevb.103.144505
https://doi.org/10.1103/physrevb.103.144505
We investigate theoretically the superconducting state of the undoped Fe-based superconductor ThFeAsN. Using input from ab initio calculations, we solve the Fermi-surface based, multichannel Eliashberg equations for Cooper-pair formation mediated by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::faae599ad5599163fbcf5b57bd958cf7
http://arxiv.org/abs/2103.16928
http://arxiv.org/abs/2103.16928
The coupling of fermionic quasiparticles to magnons is essential for a wide range of processes, from ultrafast magnetization dynamics in ferromagnets to Cooper pairing in superconductors. Although magnon energies are generally much larger than phonon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0688cd45485064bfbd3d46f18fb8fc19
Eliashberg's foundational theory of superconductivity is based on the application of Migdal's approximation, which states that vertex corrections to lowest-order electron-phonon scattering are negligible if the ratio between phonon and electron energ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c5168ae4118cc863f7f4dec42a144b1
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-438731
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-438731
We show that vertex corrections to Migdal's theorem in general induce an odd-frequency spin-triplet superconducting order parameter, which coexists with its more commonly known even-frequency spin-singlet counterpart. Fully self-consistent vertex-cor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::318db13c8dcaf05df126de30a3b81764
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-451039
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-451039
We investigate the effects of electron-phonon coupling, as well as of spin and charge fluctuations on the superconducting state in a single layer of FeSe on SrTiO$_3$ substrate. These three bosonic mediators of Cooper pairing are treated on equal foo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9a3b4893736aaf7680aa72d630905a3
http://arxiv.org/abs/2009.08755
http://arxiv.org/abs/2009.08755