Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Grein, Roland"'
Publikováno v:
Phys. Rev. B 88, 054502 (2013)
We discuss the Josephson effect in strongly spin-polarized ferromagnets where triplet correlations are induced by means of spin-active interface scattering, extending our earlier work [Phys. Rev. Lett. 102, 227005 (2009)] by including impurity scatte
Externí odkaz:
http://arxiv.org/abs/1306.0141
Autor:
Michelsen, Jens, Grein, Roland
Superconducting heterostructures with spin-active materials have emerged as promising platforms for engineering topological superconductors featuring Majorana bound states at surfaces, edges and vortices. Here we present a method for evaluating, from
Externí odkaz:
http://arxiv.org/abs/1208.1090
Publikováno v:
Phys. Rev. B 86, 064528 (2012)
Magnetic inelastic neutron scattering (INS) studies of iron-based superconductors reveal a strongly temperature-dependent spin-fluctuation spectrum in the normal conducting state, which develops a prominent low-energy resonance feature when entering
Externí odkaz:
http://arxiv.org/abs/1206.0904
Publikováno v:
Journal of Physics: Conference Series 391, 012149 (2012)
We study the superconducting proximity effect induced in the surface states of the 3-d topological insulator Bi$_2$Se$_3$ by a singlet, s-wave superconductor deposited on its surface. To this effect, the $\mathbf{k}\cdot\mathbf{p}$-Hamiltonian of Bi$
Externí odkaz:
http://arxiv.org/abs/1111.0445
Publikováno v:
Phys. Rev. Lett. 106, 047003 (2011)
The pairing mechanism in the iron-pnictide superconductors is still unknown. However, similarities to the cuprate high-temperature superconductors suggest that a similar mechanism may be at work. Recently, careful experimental studies of the spin exc
Externí odkaz:
http://arxiv.org/abs/1009.0849
Publikováno v:
Phys. Rev. Lett. 105, 207001 (2010)
We report an extensive theoretical analysis of point-contact Andreev reflection data available in literature on ferromagnetic CrO$_2$. We find that the spectra can be well understood within a model of fully spin-polarized bands in CrO$_2$ together wi
Externí odkaz:
http://arxiv.org/abs/1007.3147
Publikováno v:
Phys. Rev. B 82, 180503 (2010)
In a setup where two ferromagnetic electrodes are attached to a superconductor, Andreev bound states are induced at both ferromagnet/superconductor (FM/SC) interfaces. We study how these states propagate through the SC and interact with each other. A
Externí odkaz:
http://arxiv.org/abs/1006.3422
Publikováno v:
Phys. Rev. B 81, 214504 (2010)
We investigate the mutual proximity effect in a normal metal contacted to a superconductor through a magnetic interface. Analytical and self-consistent numerical results are presented, and we consider both the diffusive and ballistic regimes. We focu
Externí odkaz:
http://arxiv.org/abs/1004.1176
Publikováno v:
Phys. Rev. B 81, 094508 (2010), Editors' Suggestion
We study the impact of spin-active scattering on Andreev spectra of point contacts between superconductors(SCs) and strongly spin-polarized ferromagnets(FMs) using recently derived boundary conditions for the Quasiclassical Theory of Superconductivit
Externí odkaz:
http://arxiv.org/abs/0912.0105
Publikováno v:
Physical Review Letters, 106 (4)
Recently, experimental studies of the spin excitation spectrum revealed, like in the cuprates, a strong temperature dependence in the normal state and a resonance feature in the superconducting state. Based on these findings, we develop a model of el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::28d2e4d829ae39ddb24de50669b84d0e
https://repository.royalholloway.ac.uk/items/8f170b1b-944a-fdb7-d661-df5d56b3845b/4/
https://repository.royalholloway.ac.uk/items/8f170b1b-944a-fdb7-d661-df5d56b3845b/4/