Resonant peak of density of states in normal metal / diffusive ferromagnet / superconductor junctions

T. Yokoyama; Y. Tanaka; Alexandre Avraamovitch Golubov

doi:10.1103/PhysRevB.72.052512

Resonant peak of density of states in normal metal / diffusive ferromagnet / superconductor junctions

T. Yokoyama, Y. Tanaka, Alexandre Avraamovitch Golubov

Faculty of Science and Technology

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

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Abstract

The conditions for the formation of zero-energy peak in the density of states (DOS) in the normal metal/insulator/diffusive ferromagnet¿insulator¿s -wave superconductor (N/I/DF/I/S) junctions are studied by solving the Usadel equations. The DOS of the diffusive-ferromagnet conductor (DF) is calculated in various regimes for different magnitudes of the resistance, Thouless energy, and the exchange field of the DF, as well as for various resistances of the insulating barriers. The conditions for the DOS peak are formulated for the cases of weak proximity effect [large resistance of the diffusive-feromagnet/superconductor (DF/S) interface] and strong proximity effect (small resistance of the DF/S interface).

Original language	Undefined
Pages (from-to)	052512-
Journal	Physical review B: Condensed matter and materials physics
Volume	72
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.72.052512
Publication status	Published - 2005

Keywords

IR-52962
METIS-225022

Access to Document

10.1103/PhysRevB.72.052512

resonant

Cite this

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title = "Resonant peak of density of states in normal metal / diffusive ferromagnet / superconductor junctions",

abstract = "The conditions for the formation of zero-energy peak in the density of states (DOS) in the normal metal/insulator/diffusive ferromagnet¿insulator¿s -wave superconductor (N/I/DF/I/S) junctions are studied by solving the Usadel equations. The DOS of the diffusive-ferromagnet conductor (DF) is calculated in various regimes for different magnitudes of the resistance, Thouless energy, and the exchange field of the DF, as well as for various resistances of the insulating barriers. The conditions for the DOS peak are formulated for the cases of weak proximity effect [large resistance of the diffusive-feromagnet/superconductor (DF/S) interface] and strong proximity effect (small resistance of the DF/S interface).",

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T1 - Resonant peak of density of states in normal metal / diffusive ferromagnet / superconductor junctions

AU - Yokoyama, T.

AU - Tanaka, Y.

AU - Golubov, Alexandre Avraamovitch

PY - 2005

Y1 - 2005

N2 - The conditions for the formation of zero-energy peak in the density of states (DOS) in the normal metal/insulator/diffusive ferromagnet¿insulator¿s -wave superconductor (N/I/DF/I/S) junctions are studied by solving the Usadel equations. The DOS of the diffusive-ferromagnet conductor (DF) is calculated in various regimes for different magnitudes of the resistance, Thouless energy, and the exchange field of the DF, as well as for various resistances of the insulating barriers. The conditions for the DOS peak are formulated for the cases of weak proximity effect [large resistance of the diffusive-feromagnet/superconductor (DF/S) interface] and strong proximity effect (small resistance of the DF/S interface).

AB - The conditions for the formation of zero-energy peak in the density of states (DOS) in the normal metal/insulator/diffusive ferromagnet¿insulator¿s -wave superconductor (N/I/DF/I/S) junctions are studied by solving the Usadel equations. The DOS of the diffusive-ferromagnet conductor (DF) is calculated in various regimes for different magnitudes of the resistance, Thouless energy, and the exchange field of the DF, as well as for various resistances of the insulating barriers. The conditions for the DOS peak are formulated for the cases of weak proximity effect [large resistance of the diffusive-feromagnet/superconductor (DF/S) interface] and strong proximity effect (small resistance of the DF/S interface).

KW - IR-52962

KW - METIS-225022

U2 - 10.1103/PhysRevB.72.052512

DO - 10.1103/PhysRevB.72.052512

M3 - Article

SN - 1098-0121

VL - 72

SP - 052512-

JO - Physical review B: Condensed matter and materials physics

JF - Physical review B: Condensed matter and materials physics

IS - 5

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