Enhanced spin-triplet pairing in magnetic junctions with s -wave superconductors

@article{Vezin2020EnhancedSP,
  title={Enhanced spin-triplet pairing in magnetic junctions with 
s
-wave superconductors},
  author={Thomas Vezin and Chenghao Shen and Jong E Han and Igor vZuti'c},
  journal={Physical Review B},
  year={2020}
}
A common path to superconducting spintronics, Majorana fermions, and topologically-protected quantum computing relies on spin-triplet superconductivity. While naturally occurring spin-triplet pairing is elusive and even common spin-triplet candidates, such as Sr$_2$RuO$_4$, support alternative explanations, proximity effects in heterostructures can overcome these limitations. It is expected that robust spin-triplet superconductivity in magnetic junctions should rely on highly spin-polarized… 

Figures from this paper

Evidence for anisotropic spin-triplet Andreev reflection at the 2D van der Waals ferromagnet/superconductor interface
TLDR
The observation of large magnetoresistances at the interface between a quasi-two-dimensional van der Waals ferromagnet Fe0.29TaS2 and a conventional s-wave superconductor NbN provides the possible experimental evidence for the spin-triplet Andreev reflection and induced spin- triplet superconductivity at ferromaggnet/superconductor interface arising from Rashba spin-orbit coupling.
Superconductivity-enhanced spin pumping: Role of Andreev resonances
We describe a simple hybrid superconductor$|$ferromagnetic-insulator structure manifesting spin-resolved Andreev bound states in which dynamic magnetization is employed to probe spin related physics.
Suplementary material Superconductivity-induced change in magnetic anisotropy in epitaxial ferromagnet-superconductor hybrids with spin-orbit interaction
In the supplementary material, the section S1 presents a magnetic characterization of the hard Fe/Co layer of the junctions under study. Section S2 presents a magnetic characterization of the soft
Critical supercurrent and φ0 state for probing a persistent spin helix
We theoretically study the profile of a supercurrent in two-dimensional Josephson junctions with Rashba-Dresselhaus spin-orbit interaction (RDSOI) in the presence of a Zeeman field. Through
Supercurrent diode effect, spin torques, and robust zero-energy peak in planar half-metallic trilayers
Klaus Halterman,1, ∗ Mohammad Alidoust,2 Ross Smith,3 and Spencer Starr4 1Michelson Lab, Physics Division, Naval Air Warfare Center, China Lake, California 93555 2Department of Physics, Norwegian
Resonant tunneling anisotropic magnetoresistance induced by magnetic proximity
We reveal that the interplay between Rashba spin-orbit coupling and proximity-induced magnetization in a two-dimensional electron gas leads to peculiar transport properties and large anisotropy of
Cubic spin-orbit coupling and anomalous Josephson effect in planar junctions
Spin-orbit coupling in two-dimensional systems is usually characterized by Rashba and Dresselhaus spin-orbit coupling (SOC) linear in the wave vector. However, there is a growing class of materials
Planar Josephson Hall effect in topological Josephson junctions
Josephson junctions based on three-dimensional topological insulators offer intriguing possibilities to realize unconventional $p$-wave pairing and Majorana modes. Here, we provide a detailed study
Electrical and thermal transport in antiferromagnet-superconductor junctions
We demonstrate that antiferromagnet-superconductor (AF-S) junctions show qualitatively different transport properties than normal metal--superconductor (N-S) and ferromagnet-superconductor (F-S)
Superconductivity-induced change in magnetic anisotropy in epitaxial ferromagnet-superconductor hybrids with spin-orbit interaction
The interaction between superconductivity and ferromagnetism in thin film superconductor/ferromagnet heterostructures is usually reflected by a change in superconductivity of the S layer set by the
...
1
2
...

References

SHOWING 1-10 OF 81 REFERENCES
Enhanced spin pumping into superconductors provides evidence for superconducting pure spin currents
TLDR
The results show that the induced spin currents, rather than being suppressed, are substantially larger in the superconducting state compared with the normal state; although further work is required to establish the details of the spin transport process, it is shown that this cannot be mediated by quasiparticles and is most likely a triplet pure spin supercurrent.
Interfacial Spin-Orbit Coupling: A Platform for Superconducting Spintronics
Spin-orbit coupling (SOC) is a key interaction in spintronics, allowing an electrical control of spin or magnetization and, vice versa, a magnetic control of electrical current. However, recent
Generation of pure superconducting spin current in magnetic heterostructures via nonlocally induced magnetism due to Landau Fermi liquid effects
We propose a mechanism for the generation of pure superconducting spin-current carried by equal-spin triplet Cooper pairs in a superconductor (S) sandwiched between a ferromagnet (F) and a normal
Controlling the superconducting transition by spin-orbit coupling
Whereas there exists considerable evidence for the conversion of singlet Cooper pairs into triplet Cooper pairs in the presence of inhomogeneous magnetic fields, recent theoretical proposals have
Spin-polarized supercurrents for spintronics: a review of current progress.
  • M. Eschrig
  • Physics
    Reports on progress in physics. Physical Society
  • 2015
TLDR
This report follows recent developments in the controlled creation of long-range equal-spin triplet supercurrents in ferromagnets and its contribution to spintronics.
Spontaneous Edge Accumulation of Spin Currents in Finite-Size Two-Dimensional Diffusive Spin-Orbit Coupled SFS Heterostructures
We theoretically study spin and charge currents through finite-size two-dimensional $s$-wave superconductor/uniform ferromagnet/s-wave superconductor (SFS) junctions with intrinsic spin-orbit
Tunable superconducting critical temperature in ballistic hybrid structures with strong spin-orbit coupling
We present a theoretical description and numerical simulations of the superconducting transition in hybrid structures including strong spin-orbit interactions. The spin-orbit coupling is taken to be
Critical Temperature and Tunneling Spectroscopy of Superconductor-Ferromagnet Hybrids with Intrinsic Rashba-Dresselhaus Spin-Orbit Coupling
We investigate theoretically how the proximity effect in superconductor/ferromagnet hybrid structures with intrinsic spin-orbit coupling manifests in the density of states and critical temperature.
Supercurrent in ferromagnetic Josephson junctions with heavy metal interlayers
The length scale over which supercurrent from conventional BCS, $s$-wave superconductors ($S$) can penetrate an adjacent ferromagnetic ($F$) layer depends on the ability to convert singlet Cooper
Colossal proximity effect in a superconducting triplet spin valve based on halfmetallic ferromagnetic CrO2
Ferromagnets can sustain supercurrents through the formation of equal spin triplet Cooper pairs and the mechanism of odd-frequency pairing. Since such pairs are not broken by the exchange energy of
...
1
2
3
4
5
...