Zobrazeno 1 - 10
of 1 833
pro vyhledávání: '"Andersen, P M."'
We show that the Josephson diode effect becomes possible when two coupled antiferromagnetic dimers of point-like magnetic adatoms are deposited on top of a Rashba superconductor. The degree of nonreciprocity is substantial when the arising Yu-Shiba-R
Externí odkaz:
http://arxiv.org/abs/2409.13027
Autor:
Lee, Jinwon, Lee, Sanghun, Kreisel, Andreas, Paaske, Jens, Andersen, Brian M., Bastiaans, Koen M., Chatzopoulos, Damianos, Gu, Genda, Cho, Doohee, Allan, Milan P.
The iron-based superconductor FeTe$_{0.55}$Se$_{0.45}$ is a peculiar material: it hosts a surface state with a Dirac dispersion, is a putative topological superconductor hosting Majorana modes in vortices, and has an unusually low Fermi energy. The s
Externí odkaz:
http://arxiv.org/abs/2408.16598
Publikováno v:
2D Materials, 2024
The presence of a non-centrosymmetric crystal structure and in-plane mirror symmetry allows an Ising spin-orbit coupling to form in some two-dimensional materials. Examples include transition metal dichalcogenide superconductors like monolayer NbSe$_
Externí odkaz:
http://arxiv.org/abs/2405.00409
Publikováno v:
Phys. Rev. B 110, 094511 (2024)
The thermal quasiparticles in a clean type-II superconductor with line nodes give rise to a quadratic low-temperature change of the penetration depth, $\Delta \lambda \sim T^2$, as first shown by Kosztin and Leggett [I. Kosztin and A. J. Leggett, Phy
Externí odkaz:
http://arxiv.org/abs/2404.19365
Publikováno v:
Phys. Rev. B 110, 144516 (2024)
We perform a theoretical investigation of the spin susceptibility of unconventional superconductivity on the kagome lattice. Despite the existence of a sign-changing gap structure, which sums to zero over the Fermi surface, we show that such unconven
Externí odkaz:
http://arxiv.org/abs/2404.10835
Publikováno v:
Phys. Rev. B 110, 144412 (2024)
Altermagnets feature vanishing net magnetization, like antiferromagnets, but exhibit time-reversal symmetry breaking and momentum-dependent spin-split band structures. Motivated by the prevalence of altermagnetic materials with non-symmorphic symmetr
Externí odkaz:
http://arxiv.org/abs/2402.15616
Publikováno v:
Phys. Rev. B 109, 144503 (2024)
The superconducting diode effect may exist in bulk systems as well as in junctions when time-reversal and inversion symmetries are simultaneously broken. Magnetization gradients and textures satisfy both requirements and therefore also allow for supe
Externí odkaz:
http://arxiv.org/abs/2312.13857
Publikováno v:
Front. Phys. 12, 1353425 (2024)
A growing number of superconducting materials display evidence for spontaneous time-reversal symmetry breaking (TRSB) below their critical transition temperatures. Precisely what this implies for the nature of the superconducting ground state of such
Externí odkaz:
http://arxiv.org/abs/2312.08099
Publikováno v:
Phys. Rev. B 109, 054521 (2024)
The discovery of unconventional superconductivity in the heavy-fermion material UTe$_2$ has reinvigorated research of spin-triplet superconductivity. We perform a theoretical study of coupled two-component spin-triplet superconducting order parameter
Externí odkaz:
http://arxiv.org/abs/2311.06097
Publikováno v:
Phys. Rev. B 109, 014505 (2024)
Spontaneous generation of time-reversal symmetry breaking in unconventional superconductors is currently a topic of considerable interest. While chiral superconducting order is often assumed to be the source of such signatures, they can sometimes als
Externí odkaz:
http://arxiv.org/abs/2310.05138