Origin of spontaneous currents in a superconductor-ferromagnetic proximity system

JF Annett; M Krawiec; BL Gyorffy

doi:10.1016/j.physc.2005.12.009

Origin of spontaneous currents in a superconductor-ferromagnetic proximity system

JF Annett^*, M Krawiec, BL Gyorffy

^*Corresponding author for this work

School of Physics

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

6 Citations (Scopus)

Abstract

We have previously shown that a ferromagnet-superconductor heterostructure may possess a spontaneous current circulation parallel to the interface. This current is caused by Andreev bound states in the thin ferromagnetic layer, and can be fully spin-polarized. Here we investigate the total energy of the system in cases where the current either does or does not flow. We show that the current is a true quantum ground state effect, and examine the effect of the current on the different contributions to the total energy.

Original language	English
Pages (from-to)	7-10
Number of pages	4
Journal	Physica C: Superconductivity and its Applications
Volume	437-38
DOIs	https://doi.org/10.1016/j.physc.2005.12.009
Publication status	Published - 15 May 2006
Event	4th International Conferene on Vortex Matter in Nanostructured Superconductors (VORTEX IV) - Iraklion, Greece Duration: 3 Sept 2005 → 9 Sept 2005

Keywords

proximity effect
superconductor-ferromagnet interface
NANOSTRUCTURES
HYBRIDS

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title = "Origin of spontaneous currents in a superconductor-ferromagnetic proximity system",

abstract = "We have previously shown that a ferromagnet-superconductor heterostructure may possess a spontaneous current circulation parallel to the interface. This current is caused by Andreev bound states in the thin ferromagnetic layer, and can be fully spin-polarized. Here we investigate the total energy of the system in cases where the current either does or does not flow. We show that the current is a true quantum ground state effect, and examine the effect of the current on the different contributions to the total energy.",

keywords = "proximity effect, superconductor-ferromagnet interface, NANOSTRUCTURES, HYBRIDS",

author = "JF Annett and M Krawiec and BL Gyorffy",

year = "2006",

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doi = "10.1016/j.physc.2005.12.009",

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journal = "Physica C: Superconductivity and its Applications",

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note = "4th International Conferene on Vortex Matter in Nanostructured Superconductors (VORTEX IV) ; Conference date: 03-09-2005 Through 09-09-2005",

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TY - JOUR

T1 - Origin of spontaneous currents in a superconductor-ferromagnetic proximity system

AU - Annett, JF

AU - Krawiec, M

AU - Gyorffy, BL

PY - 2006/5/15

Y1 - 2006/5/15

N2 - We have previously shown that a ferromagnet-superconductor heterostructure may possess a spontaneous current circulation parallel to the interface. This current is caused by Andreev bound states in the thin ferromagnetic layer, and can be fully spin-polarized. Here we investigate the total energy of the system in cases where the current either does or does not flow. We show that the current is a true quantum ground state effect, and examine the effect of the current on the different contributions to the total energy.

AB - We have previously shown that a ferromagnet-superconductor heterostructure may possess a spontaneous current circulation parallel to the interface. This current is caused by Andreev bound states in the thin ferromagnetic layer, and can be fully spin-polarized. Here we investigate the total energy of the system in cases where the current either does or does not flow. We show that the current is a true quantum ground state effect, and examine the effect of the current on the different contributions to the total energy.

KW - proximity effect

KW - superconductor-ferromagnet interface

KW - NANOSTRUCTURES

KW - HYBRIDS

U2 - 10.1016/j.physc.2005.12.009

DO - 10.1016/j.physc.2005.12.009

M3 - Article (Academic Journal)

SN - 0921-4534

VL - 437-38

SP - 7

EP - 10

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

T2 - 4th International Conferene on Vortex Matter in Nanostructured Superconductors (VORTEX IV)

Y2 - 3 September 2005 through 9 September 2005

ER -

Origin of spontaneous currents in a superconductor-ferromagnetic proximity system

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Keywords

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