Spontaneous symmetry breaking induced thermospin effect in superconducting tunnel junctions

@article{Germanese2021SpontaneousSB,
  title={Spontaneous symmetry breaking induced thermospin effect in superconducting tunnel junctions},
  author={Gaia Germanese and Federico Paolucci and G. Marchegiani and Alessandro Braggio and Francesco Giazotto},
  journal={Physical Review B},
  year={2021}
}
We discuss the charge and the spin tunneling currents between two Bardeen-Cooper-Schrieffer (BCS) superconductors, where one density of states is spin-split by the proximity of a ferromagnetic insulator. In the presence of a large temperature bias across the junction, we predict the generation of a spin-polarized thermoelectric current. This thermo-spin effect is the result of a spontaneous particle-hole symmetry breaking in the absence of any polarizing tunnel barrier. The two spin components… 

Figures from this paper

Bipolar Thermoelectricity in Bilayer-Graphene/Superconductor Tunnel Junctions
We investigate the thermoelectric properties of a hybrid nanodevice composed by a 2D carbon-based material and a superconductor. This system presents nonlinear bipolar thermoelectricity as induced by
Temperature-Biased Double-Loop Josephson Flux Transducer
We theoretically study the behavior of the critical current of a thermally-biased tunnel Josephson junction with a particular design, in which the electrodes of the junction are enclosed in two

References

SHOWING 1-10 OF 77 REFERENCES
Toward the Absolute Spin-Valve Effect in Superconducting Tunnel Junctions.
TLDR
The first switchable superconducting spin-valve based on two EuS/Al bilayers coupled through an aluminum oxide tunnel barrier is reported, which may be pivotal for realization of thermoelectric radiation detectors, a logical element for a memory cell in cryogenics, superconductor-based computers, andsuperconducting spintronics in general.
Joule heating generated by spin current through Josephson junctions
We theoretically study the spin-polarized current flowing through a Josephson junction (JJ) in a spin injection device. When the spin-polarized current is injected from a ferromagnet in a
Spin injection into superconductors
It is shown that when a spin-polarized current is injected into a superconductor from a ferromagnet in ferromagnet/superconductor (FM/SC) and FM/SC/FM tunnel junctions, the spin and charge degrees of
Superconductivity and Electron Tunneling
TLDR
An analysis of the problem is presented which is based on the simple, one-dimensional model of the electron energy spectrum of a superconductor given by the theory of Bardeen, Cooper, and Schrieffer and close quantitative agreement is obtained between the results of the calculations and the observed characteristics.
Superconducting double spin valve with extraordinary large tunable magnetoresistance
A superconducting double spin valve device is proposed. Its operation takes advantage of the interplay between the spin-filtering effect of ferromagnetic insulators and superconductivity-induced
Superconducting Spintronics
Traditional studies that combine spintronics and superconductivity have mainly focused on the injection of spin-polarized quasiparticles into superconducting materials. However, a complete synergy
Coherent thermoelectric effects in mesoscopic Andreev interferometers
We investigate thermoelectric transport through quantum chaotic, ballistic mesoscopic Andreev interferometers. We show that the ratio of the thermal and the charge conductances exhibits large
Thermoelectric current in a graphene Cooper pair splitter
TLDR
The observed non-local Seebeck effect offers an efficient tool for producing entangled electrons andThermoelectricity due to the interplay of the nonlocal Cooper pair splitting and the elastic co-tunneling in normal metal-superconductor-normal metal structure is predicted.
The Josephson heat interferometer
TLDR
In addition to confirming the existence of a phase-dependent thermal current unique to Josephson junctions, the results point the way towards the phase-coherent manipulation of heat in solid-state nanocircuits.
...
...