Zobrazeno 1 - 10
of 5 191
pro vyhledávání: '"Andersen, A. M."'
Autor:
Roig, Mercè, Yu, Yue, Ekman, Rune C., Kreisel, Andreas, Andersen, Brian M., Agterberg, Daniel F.
Altermagnets break time-reversal symmetry and their spin-orbit coupling (SOC) allow for an anomalous Hall effect (AHE) that depends on the direction of the N\'eel ordering vector. The AHE and the ferromagnetic spin moment share the same symmetry and
Externí odkaz:
http://arxiv.org/abs/2412.09338
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