Zobrazeno 1 - 10
of 24
pro vyhledávání: '"François Crépin"'
Autor:
François Crépin, Björn Trauzettel
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 82:185-190
We analyze the periodicity of persistent currents in quantum spin Hall loops, partly covered with an s-wave superconductor, in the presence of a flux tube. Much like in normal (non-helical) metals, the periodicity of the single-particle spectrum goes
Autor:
St. Trellenkamp, Sebastian Heedt, Jürgen Schubert, François Crépin, Th. Schäpers, N. Traverso Ziani, Bjoern Trauzettel, Werner Prost, Detlev Grützmacher
Spin-momentum locking in a semiconductor device with strong spin-orbit coupling (SOC) is a fundamental goal of nanoscale spintronics and an important prerequisite for the formation of Majorana bound states. Such a helical state is predicted in one-di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83a5a5afc7e230c32a31ed2b0fed7ded
https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&origin=inward&scp=85015644979
https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&origin=inward&scp=85015644979
Publikováno v:
EPL-Europhysics Letters
EPL-Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2016, 113 (3), pp.37002 ⟨10.1209/0295-5075/113/37002⟩
EPL-Europhysics Letters, 2016, 113 (3), pp.37002 ⟨10.1209/0295-5075/113/37002⟩
EPL-Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2016, 113 (3), pp.37002 ⟨10.1209/0295-5075/113/37002⟩
EPL-Europhysics Letters, 2016, 113 (3), pp.37002 ⟨10.1209/0295-5075/113/37002⟩
The weakly interacting helical Luttinger liquid, due to spin momentum locking, is characterized by extremely peculiar local observables: we show that the density-density correlation functions do not exhibit signatures of Friedel and Wigner oscillatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d235bc23c5389510e9bdec2262c4afd4
https://hal.sorbonne-universite.fr/hal-01301458
https://hal.sorbonne-universite.fr/hal-01301458
Publikováno v:
Physical Review B. 92
We study transport properties of the helical edge channels of a quantum spin Hall (QSH) insulator, in the presence of electron-electron interactions and weak, local Rashba spin-orbit coupling. The combination of the two allows for inelastic backscatt
Non-local pairing processes at the edge of a two-dimensional topological insulator in proximity to an $s$-wave superconductor are usually suppressed by helicity. However, additional proximity of a ferromagnetic insulator can substantially influence t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::386a68e92b866aa272a88a8b5b705907
http://arxiv.org/abs/1503.07784
http://arxiv.org/abs/1503.07784
The properties of the strongly interacting edge states of two dimensional topological insulators in the presence of two particle backscattering are investigated. We find an anomalous behavior of the density-density correlation functions, which show o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d4ef2081f3a76ded93bc60ddda8af8c
We develop a Gaussian variational approach in replica space to investigate the phase diagram of a one-dimensional interacting disordered topological superconducting wire in the strong coupling regime. This method allows for a non-perturbative treatme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25f12f04b0a1c0a837c8257547a3fa78
http://arxiv.org/abs/1405.4283
http://arxiv.org/abs/1405.4283
Majorana bound states can emerge as zero-energy modes at the edge of a two-dimensional topological insulator in proximity to an ordinary $s$-wave superconductor. The presence of an additional ferromagnetic domain close to the superconductor can lead
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b58250c0e38155f54fa34edfc27a1b19
http://hdl.handle.net/11583/2544368
http://hdl.handle.net/11583/2544368
We study a one-dimensional helical system with random Rashba spin-orbit coupling. Using renor- malization group methods, we derive a consistent set of flow equations governing the important con- trol parameters of the backscattering process. Thereby,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0dcca58755717c76994784a254db153e
Autor:
Björn Trauzettel, François Crépin
Publikováno v:
Physical review letters. 112(7)
We study the properties of a topological Josephson junction made of both edges of a 2D topological insulator. We show that, due to fermion parity pumping across the bulk, the global parity of the junction has a clear signature in the periodicity and