Spin-polarized quasiparticle transport in ferromagnet–d-wave-superconductor junctions with a {110} interface

Jian-Xin Zhu; B. Friedman; C. S. Ting

doi:10.1103/PhysRevB.59.9558

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Spin-polarized quasiparticle transport in ferromagnet–d-wave-superconductor junctions with a {110} interface

Jian-Xin Zhu, B. Friedman, C. S. Ting

DOI 10.1103/PhysRevB.59.9558 · Physical Review B

T1

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Abstract

Within a scattering framework, a theoretical study is presented for the spin-polarized quasiparticle transport in ferromagnet–d-wave-superconductor junctions with {110} interface. We find that the subgap conductance behaviors are qualitatively different from a nonmagnetic case, due to the modification of Andreev reflection by the exchange field in the ferromagnet, and can also be significantly different from those of a ferromagnet–s-wave junction because of the sign change of the d-wave order parameter along the {110} direction of the crystal. For a ballistic ferromagnet–d-wave-superconductor junction, a zero-bias conductance minimum is achieved. In addition, a conductance maximum at finite bias can also be evolved by interfacial scattering. For a normal-metal–ferromagnet–d-wave-superconductor junction, conductance resonances are predicted.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
DyBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2/3Ba1/3MnO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown