Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Cayssol, Jérome"'
Autor:
Vallet, Pierre, Cayssol, Jérôme
The Anderson-Higgs mode in a superconductor corresponds to a collective and coherent oscillation of the order parameter amplitude. We propose to detect this mode in a tunnel Josephson junction between two singlet s-wave diffusive superconductors. We
Externí odkaz:
http://arxiv.org/abs/2403.06878
Autor:
Vallet, Pierre, Cayssol, Jérôme
In superconductors (SC), the Higgs amplitude mode is a coherent oscillation of the order parameter typically generated by THz laser irradiation. In this paper we propose to probe the Higgs mode using electronic transport in ballistic superconducting
Externí odkaz:
http://arxiv.org/abs/2307.06019
Publikováno v:
Phys. Rev. B 105, 075309 (2022)
The effect by which light focuses upon entering a medium with a negative refractive index, known as Veselago lensing, may enable optical imaging below the diffraction limit. Similarly, focusing electrons across a $pn$-junction could realize a technol
Externí odkaz:
http://arxiv.org/abs/2108.09261
Autor:
Tchoumakov, Serguei, Bujnowski, Bogusz, Noky, Jonathan, Gooth, Johannes, Grushin, Adolfo G., Cayssol, Jérôme
Publikováno v:
Phys. Rev. B 104, 125308 (2021)
In Weyl semimetals the location of linear band crossings, the Weyl cones, is not bound to any high symmetry point of the Brillouin zone, unlike the Dirac nodes in graphene. This flexibility is advantageous for valleytronics, where information is enco
Externí odkaz:
http://arxiv.org/abs/2106.02462
Autor:
Atteia, Jonathan, Cayssol, Jérôme
Publikováno v:
Phys. Rev. B 100, 245412 (2019)
We consider the helical edge state of a Quantum Spin Hall insulator, connected between two leads, and irradiated by a monochromatic and circularly polarized electromagnetic wave. The photocurrent generated within the helical edge state is studied as
Externí odkaz:
http://arxiv.org/abs/1904.07815
Publikováno v:
Phys. Rev. B 96, 245404 (2017)
The coherent charge transport through an illuminated graphene ribbon is studied as function of electronic doping, frequency and strength of the electromagnetic driving, for monochromatic circularly polarized light. We focus on the DC current carried
Externí odkaz:
http://arxiv.org/abs/1709.00090
Autor:
Sticlet, Doru, Cayssol, Jérôme
Publikováno v:
Phys. Rev. B 90, 201303 (2014)
Quantum spin Hall insulators are characterized by topologically protected counterpropagating edge states. Here we study the dynamical response of these helical edge states under a time-dependent flux biasing, in the presence of a heat bath. It is sho
Externí odkaz:
http://arxiv.org/abs/1406.3633
Publikováno v:
Phys. Rev. B 89, 115430 (2014)
We consider one-dimensional topological insulators hosting fractionally charged midgap states in the presence and absence of induced superconductivity pairing. Under the protection of a discrete symmetry, relating positive and negative energy states,
Externí odkaz:
http://arxiv.org/abs/1312.6131
Publikováno v:
Phys. Rev. B 88, 205401 (2013)
The persistent current in strictly one-dimensional Dirac systems is investigated within two different models, defined in the continuum and on a lattice, respectively. The object of the study is the effect of a single magnetic or nonmagnetic impurity
Externí odkaz:
http://arxiv.org/abs/1307.6964
Publikováno v:
Phys. Status Solidi RRL, 7, 101-108 (2013)
Topological insulators represent unique phases of matter with insulating bulk and conducting edge or surface states, immune to small perturbations such as backscattering due to disorder. This stems from their peculiar band structure, which provides t
Externí odkaz:
http://arxiv.org/abs/1211.5623