Zobrazeno 1 - 10
of 1 332
pro vyhledávání: '"Sudbø, A."'
Orbital currents in lattice multiorbital systems: Continuity equation, torques, and RKKY interaction
Publikováno v:
Phys. Rev. B 110, 104423, (2024)
Utilizing the electron orbital degree of freedom in heterostructures is attracting increasing attention due to the possibility of achieving much larger conversion rates between charge and orbital angular momentum flow compared to the intrinsic electr
Externí odkaz:
http://arxiv.org/abs/2406.18668
Publikováno v:
Phys. Rev. B 109, 174520 (2024)
We use strong-coupling Eliashberg theory to study the competition of separate superconducting orders at low temperatures. Specifically, we study magnon-mediated superconductivity in a trilayer heterostructure with a thin normal metal between two anti
Externí odkaz:
http://arxiv.org/abs/2403.18897
Publikováno v:
Phys. Rev. B 109, 134515 (2024)
Altermagnets exhibit a large electron spin splitting which can be understood as a result of strong coupling between itinerant electrons and localized spins. We consider superconductivity due to electron-magnon scattering, using strong-coupling Eliash
Externí odkaz:
http://arxiv.org/abs/2402.14061
Autor:
Lundemo, Sondre Duna, Sudbø, Asle
Publikováno v:
Phys. Rev. B 109, 184508 (2024)
We study the effective low-energy fermionic theory of the Kondo-Kitaev model to leading order in the Kondo coupling. Our main goal is to understand the nature of the superconducting instability induced in the proximate metal due to its coupling to sp
Externí odkaz:
http://arxiv.org/abs/2401.05488
Autor:
Mæland, Kristian, Sudbø, Asle
Publikováno v:
Phys. Rev. B 108, 214511 (2023)
Hybrid systems of superconductors and magnets display several intriguing properties, both from a fundamental physics point of view and with practical applications. Promising applications in superconducting spintronics motivate a search for systems wh
Externí odkaz:
http://arxiv.org/abs/2310.03082
Publikováno v:
Phys. Rev. B 108, 214508 (2023)
We study superconducting three-band systems within strong-coupling Eliashberg theory. In particular, we search for phase-frustrated superconducting systems with spontaneous time-reversal symmetry breaking (TRSB) states. The emergence of TRSB states i
Externí odkaz:
http://arxiv.org/abs/2309.15894
Publikováno v:
Phys. Rev. B 108, 224515 (2023)
We recently showed that spin fluctuations of noncoplanar magnetic states can induce topological superconductivity in an adjacent normal metal [M{\ae}land et al., Phys. Rev. Lett. 130, 156002 (2023)]. The noncolinear nature of the spins was found to b
Externí odkaz:
http://arxiv.org/abs/2309.07211
Publikováno v:
Phys. Rev. B 108, 224421 (2023)
We propose a minimal toy model for a two-dimensional altermagnet. The model unravels altermagnetic properties at a microscopic level. We find spin-split electron- and non-degenerate magnon bands with a $d$-wave symmetry. We use the model to explore m
Externí odkaz:
http://arxiv.org/abs/2308.08606
We consider superconductivity in a system with $N$ Fermi surfaces, including intraband and interband effective electron-electron interactions. The effective interaction is described by an $N \times N$ matrix whose elements are assumed to be constant
Externí odkaz:
http://arxiv.org/abs/2304.13741
Publikováno v:
Phys. Rev. B 108, 054520 (2023)
We consider a planar heterostructure consisting of a normal metal in proximity to an antiferromagnetic insulator, with an interlayer exchange coupling between the metal and the insulator. The coupling to the two sublattices of the antiferromagnetic i
Externí odkaz:
http://arxiv.org/abs/2303.16916