Spin polarized transport in the weak link between f-wave superconductors

Rashedi, Gholamreza; Kolesnichenko, Yu. A.

doi:10.1016/j.physc.2006.10.001

Cited by 22 publications

(16 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We found that, for all strengths of the exchange field and spin-DIPS, the spin-current I s is zero. Unlike the case of spin-triplet superconductors, we can not see any spincurrent even forx andŷ directions of spin polarization 66,67 . In fact, one can confirm this finding analytically for all components of spin polarization at least for linearized Usadel equation and transparent boundaries.…”

Section: A Critical Currents Vs Thickness Df For Homogeneous Exchancontrasting

confidence: 83%

See 1 more Smart Citation

Spin-polarized Josephson current in superconductor/ferromagnet/superconductor junctions with inhomogeneous magnetization

et al. 2010

View full text Add to dashboard Cite

We study numerically the properties of spin-and charge-transport in a current-biased nanoscale diffusive superconductor|ferromagnet|superconductor junction when the magnetization texture is non-uniform. Specifically, we incorporate the presence of a Bloch/Neel domain walls and conical ferromagnetism, including the role of spin-active interfaces. The superconducting leads are assumed to be of the conventional s-wave type. In particular, we investigate how the 0-π transition is influenced by the inhomogeneous magnetization texture and focus on the particular case where the charge-current vanishes while the spin-current is non-zero. In the case of a Bloch/Neel domain-wall, the spin-current can be seen only for one component of the spin polarization, whereas in the case of conical ferromagnetism the spin-current has the three components. This is in contrast to a scenario with a homogeneous exchange field, where the spin-current vanishes completely. We explain all of these results in terms of the interplay between the triplet anomalous Green's function induced in the ferromagnetic region and the local direction of the magnetization vector in the ferromagnet. Interestingly, we find that the spin-current exhibits discontinuous jumps at the 0-π transition points of the critical charge-current. This is seen both in the presence of a domain wall and for conical ferromagnetism. We explain this result in terms of the different symmetry obeyed by the current-phase relation when comparing the charge-and spin-current. Specifically, we find that whereas the charge-current obeys the well-known relation Ic(φ) = −Ic(2π − φ), the spin-current satisfies Is(φ) = Is(2π − φ), where φ is the superconducting phase difference.

show abstract

Section: A Critical Currents Vs Thickness Df For Homogeneous Exchancontrasting

confidence: 83%

“…66 where transport between spin-triplet superconductors has been investigated. As a result, it suffices to restrict our attention to the range φ ∈ [0, π].…”

Section: Origin Of the Discontinuous Jumps In The Spin-currentmentioning

confidence: 99%

Spin-polarized Josephson current in superconductor/ferromagnet/superconductor junctions with inhomogeneous magnetization

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Nowadays, the spin-polarized-current in superconductive structures as a spintronics concept, has attracted much attention [1][2][3]. Although the charge-current is more interesting than spincurrent, the latter has been investigated because of high sensitivity and application of spin-polarized-current in measurement systems.…”

Section: Introductionmentioning

confidence: 99%

Spin-polarized conductance in graphene-based FSF junctions

Salehi

Rashedi

2010

Physica C: Superconductivity and its Applications

Self Cite

View full text Add to dashboard Cite

“…In Refs. 16,19, 23 a polarized dissipation-less supercurrent of spins had been predicted. It was shown that the current-phase dependencies are totally different from the current-phase dependencies of the junction between conventional s-wave superconductors [24] and high temperature d-wave superconductors [25].…”

mentioning

confidence: 98%

“…Josephson effect in the junction between singlet and triplet superconductors [11][12][13], misorientated TS's [14][15][16][17][18][19], TS's separated by diffusive normal layer [20], pointcontact [21] had been investigated. In Ref.…”

mentioning

confidence: 99%

Charge and spin currents in a ballistic SNS Josephson junction between p-wave superconductors

Rashedi

Rahnavard

Kolesnichenko

2010

Low Temperature Physics

Self Cite

View full text Add to dashboard Cite

Charge and spin transport properties of a clean TS-N-TS Josephson junction (triplet superconductor-normal metal-triplet superconductor) are studied using the quasiclassical Eilenberger equation for Green's function. Effects of thickness of normal layer between superconductors on the spin and charge currents are investigated. The effect of a misorientation between triplet superconductors which creates the spin current is the main subject of this paper. It is shown that for some values of phase difference between superconductors the spin current exists in the absence of charge current and vice versa.

show abstract

Spin polarized transport in the weak link between f-wave superconductors

Cited by 22 publications

References 36 publications

Spin-polarized Josephson current in superconductor/ferromagnet/superconductor junctions with inhomogeneous magnetization

Spin-polarized Josephson current in superconductor/ferromagnet/superconductor junctions with inhomogeneous magnetization

Spin-polarized conductance in graphene-based FSF junctions

Charge and spin currents in a ballistic SNS Josephson junction between p-wave superconductors

Contact Info

Product

Resources

About