Zobrazeno 1 - 10
of 980
pro vyhledávání: '"EGGER, R"'
Publikováno v:
Phys. Rev. B 109, 024504 (2024)
We study charge transport in voltage-biased single-channel junctions involving helical superconductors with finite Cooper pair momentum. For a Josephson junction, the equilibrium current-phase relation shows a superconducting diode effect: the critic
Externí odkaz:
http://arxiv.org/abs/2307.15386
We analyze the rectification properties of voltage-biased Josephson junctions exhibiting the superconducting diode effect. Taking into account multiple Andreev reflection (MAR) processes in our scattering theory, we consider a short weak link of arbi
Externí odkaz:
http://arxiv.org/abs/2307.14698
Publikováno v:
Phys. Rev. B 107, 115420 (2023)
We study two-dimensional (2D) Dirac fermions in the presence of a periodic mass term alternating between positive and negative values along one direction. This scenario could be realized for a graphene monolayer or for the surface states of topologic
Externí odkaz:
http://arxiv.org/abs/2212.09792
Publikováno v:
Phys. Rev. B 105, 035419 (2022)
We analyze the charge and thermal transport at a junction of interacting quantum wires close to equilibrium. Within the framework of Tomonaga-Luttinger liquids, we compute the thermal conductance for a wide class of boundary conditions and detail the
Externí odkaz:
http://arxiv.org/abs/2108.04149
Publikováno v:
Phys. Rev. B 102, 134501 (2020)
We propose driven dissipative Majorana platforms for the stabilization and manipulation of robust quantum states. For Majorana box setups, in the presence of environmental electromagnetic noise and with tunnel couplings to quantum dots, we show that
Externí odkaz:
http://arxiv.org/abs/2003.13979
Publikováno v:
Phys. Rev. Lett. 125, 147701 (2020)
Pure quantum states can be stabilized in open quantum systems subject to external driving forces and dissipation by environmental modes. We show that driven dissipative (DD) Majorana devices offer key advantages for stabilizing degenerate state manif
Externí odkaz:
http://arxiv.org/abs/2003.13295
Publikováno v:
Phys. Rev. Lett. 124, 110403 (2020)
Generation of quasi-particle--hole pairs in gapped graphene monolayers in the combined field of two counterpropagating light waves is studied. The process represents an analogue of electron-positron pair production from the QED vacuum by the Breit-Wh
Externí odkaz:
http://arxiv.org/abs/1912.11538
Publikováno v:
Phys. Rev. B 101, 094511 (2020)
The boundary Green's function (bGF) approach has been established as a powerful theoretical technique for computing the transport properties of tunnel-coupled hybrid nanowire devices. Such nanowires may exhibit topologically nontrivial superconductin
Externí odkaz:
http://arxiv.org/abs/1912.07003
Publikováno v:
Phys. Rev. Research 2, 023054 (2020)
We propose multi-particle interference protocols in the time-energy domain which are able to probe localized topological quasiparticles. Using a set of quantum dots tunnel-coupled to a topologically nontrivial system, the time dependence of the dot l
Externí odkaz:
http://arxiv.org/abs/1909.00837
Publikováno v:
Nuclear Physics B 941, 794-837 (2019)
We study a Y junction of spin-1/2 Heisenberg chains with an interaction that breaks both time-reversal and chain exchange symmetries, but not their product nor SU(2) symmetry. The boundary phase diagram features a stable disconnected fixed point at w
Externí odkaz:
http://arxiv.org/abs/1811.06794