Theory of tunneling spectroscopy of normal metal/ferromagnet/spin-triplet superconductor junctions

L.A.B. Olde Olthof; S.-I. Suzuki; A.A. Golubov; M. Kunieda; S. Yonezawa; Y. Maeno; Y. Tanaka

doi:10.1103/PhysRevB.98.014508

Theory of tunneling spectroscopy of normal metal/ferromagnet/spin-triplet superconductor junctions

L.A.B. Olde Olthof, S.-I. Suzuki, A.A. Golubov, M. Kunieda, S. Yonezawa, Y. Maeno, Y. Tanaka

Interfaces and Correlated Electron Systems

Research output: Contribution to journal › Article › Academic › peer-review

10 Citations (Scopus)

205 Downloads (Pure)

Abstract

We study the tunneling conductance of a ballistic normal metal/ferromagnet/spin-triplet superconductor junction using the extended Blonder-Tinkham-Klapwijk formalism as a model for a c-axis-oriented Au/SrRuO3/Sr2RuO4 junction. We compare chiral p-wave (CPW) and helical p-wave (HPW) pair potentials, combined with ferromagnet magnetization directions parallel and perpendicular to the interface. For fixed θM, where θM is a direction of magnetization in the ferromagnet measured from the c axis, the tunneling conductances of CPW and HPW clearly show different voltage dependencies. It is found that the cases where the d vector is perpendicular to the magnetization direction (CPW with θM=π/2 and HPW with θM=0) are identical. The obtained results serve as a guide to determine the pairing symmetry of the spin-triplet superconductor Sr2RuO4.

Original language	English
Article number	014508
Journal	Physical review B: Covering condensed matter and materials physics
Volume	98
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.98.014508
Publication status	Published - 13 Jul 2018

Access to Document

10.1103/PhysRevB.98.014508

OldeOlthof2018theoryFinal published version, 906 KB

Cite this

@article{99f64c198d3646febd33a23810d0cc5a,

title = "Theory of tunneling spectroscopy of normal metal/ferromagnet/spin-triplet superconductor junctions",

abstract = "We study the tunneling conductance of a ballistic normal metal/ferromagnet/spin-triplet superconductor junction using the extended Blonder-Tinkham-Klapwijk formalism as a model for a c-axis-oriented Au/SrRuO3/Sr2RuO4 junction. We compare chiral p-wave (CPW) and helical p-wave (HPW) pair potentials, combined with ferromagnet magnetization directions parallel and perpendicular to the interface. For fixed θM, where θM is a direction of magnetization in the ferromagnet measured from the c axis, the tunneling conductances of CPW and HPW clearly show different voltage dependencies. It is found that the cases where the d vector is perpendicular to the magnetization direction (CPW with θM=π/2 and HPW with θM=0) are identical. The obtained results serve as a guide to determine the pairing symmetry of the spin-triplet superconductor Sr2RuO4.",

author = "\{Olde Olthof\}, L.A.B. and S.-I. Suzuki and A.A. Golubov and M. Kunieda and S. Yonezawa and Y. Maeno and Y. Tanaka",

year = "2018",

month = jul,

day = "13",

doi = "10.1103/PhysRevB.98.014508",

language = "English",

volume = "98",

journal = "Physical review B: Covering condensed matter and materials physics",

issn = "2469-9950",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

T1 - Theory of tunneling spectroscopy of normal metal/ferromagnet/spin-triplet superconductor junctions

AU - Olde Olthof, L.A.B.

AU - Suzuki, S.-I.

AU - Golubov, A.A.

AU - Kunieda, M.

AU - Yonezawa, S.

AU - Maeno, Y.

AU - Tanaka, Y.

PY - 2018/7/13

Y1 - 2018/7/13

N2 - We study the tunneling conductance of a ballistic normal metal/ferromagnet/spin-triplet superconductor junction using the extended Blonder-Tinkham-Klapwijk formalism as a model for a c-axis-oriented Au/SrRuO3/Sr2RuO4 junction. We compare chiral p-wave (CPW) and helical p-wave (HPW) pair potentials, combined with ferromagnet magnetization directions parallel and perpendicular to the interface. For fixed θM, where θM is a direction of magnetization in the ferromagnet measured from the c axis, the tunneling conductances of CPW and HPW clearly show different voltage dependencies. It is found that the cases where the d vector is perpendicular to the magnetization direction (CPW with θM=π/2 and HPW with θM=0) are identical. The obtained results serve as a guide to determine the pairing symmetry of the spin-triplet superconductor Sr2RuO4.

AB - We study the tunneling conductance of a ballistic normal metal/ferromagnet/spin-triplet superconductor junction using the extended Blonder-Tinkham-Klapwijk formalism as a model for a c-axis-oriented Au/SrRuO3/Sr2RuO4 junction. We compare chiral p-wave (CPW) and helical p-wave (HPW) pair potentials, combined with ferromagnet magnetization directions parallel and perpendicular to the interface. For fixed θM, where θM is a direction of magnetization in the ferromagnet measured from the c axis, the tunneling conductances of CPW and HPW clearly show different voltage dependencies. It is found that the cases where the d vector is perpendicular to the magnetization direction (CPW with θM=π/2 and HPW with θM=0) are identical. The obtained results serve as a guide to determine the pairing symmetry of the spin-triplet superconductor Sr2RuO4.

UR - https://www.scopus.com/pages/publications/85050549295

U2 - 10.1103/PhysRevB.98.014508

DO - 10.1103/PhysRevB.98.014508

M3 - Article

AN - SCOPUS:85050549295

SN - 2469-9950

VL - 98

JO - Physical review B: Covering condensed matter and materials physics

JF - Physical review B: Covering condensed matter and materials physics

IS - 1

M1 - 014508

ER -

Theory of tunneling spectroscopy of normal metal/ferromagnet/spin-triplet superconductor junctions

Abstract

Access to Document

Other files and links

Fingerprint

Cite this