Physical Review B, volume 105, issue 2, publication number 024513

Long-range interaction of magnetic moments in a coupled system of superconductor-ferromagnet-superconductor Josephson junctions with anomalous ground-state phase shift

Bobkov G. A. ¹

Bobkova I. V. ^{1, 2, 3}

Bobkov A. M. ²

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Moscow Institute of Physics and Technology, Dolgoprudny 141700, Russia |

Institute of Solid State Physics, Chernogolovka, Moscow region 142432, Russia |

National Research University Higher School of Economics, Moscow 101000, Russia |

Publication type: Journal Article

Publication date: 2022-01-18

American Physical Society (APS)

Journal: Physical Review B

Quartile SCImago

Quartile WOS

Impact factor: 3.7

ISSN: 24699950, 24699969, 10980121, 1550235X

DOI: 10.1103/PhysRevB.105.024513

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Abstract

A mechanism of a superconductivity-mediated interaction of two magnets in a system of coupled superconductor-ferromagnet-superconductor (S-F-S) Josephson junctions (JJs) with spin-orbit interaction is proposed. The predicted indirect magnetic interaction favors the antiparallel orientation of the magnets. Its spatial scale is not restricted by the proximity length scales of the superconductor. Our estimates suggest that the interaction strength is not reduced considerably even at the macroscopic scales of the order of millimeters. At larger distances l between the magnets the coupling constant exhibits the long-range power-law 1 / l behavior. The mechanism of the interaction is based on two key ingredients: (i) the anomalous ground-state phase shift in the S-F-S JJ provides a magnetoelectric coupling between the condensate phase and the magnetization, and (ii) the interaction is mediated by the condensate phase of the superconducting region connecting both JJs. In addition, we demonstrate high tunability of the total magnetic configuration of the system by the externally controlled superconducting phase between the leads.

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	1
Journal of Physics Condensed Matter	Journal of Physics Condensed Matter, 1, 33.33% Journal of Physics Condensed Matter 1 publication, 33.33%
JETP Letters	JETP Letters, 1, 33.33% JETP Letters 1 publication, 33.33%
Physical Review B	Physical Review B, 1, 33.33% Physical Review B 1 publication, 33.33%
	1

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	1
IOP Publishing	IOP Publishing, 1, 33.33% IOP Publishing 1 publication, 33.33%
Pleiades Publishing	Pleiades Publishing, 1, 33.33% Pleiades Publishing 1 publication, 33.33%
American Physical Society (APS)	American Physical Society (APS), 1, 33.33% American Physical Society (APS) 1 publication, 33.33%
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Bobkov G. A. et al. Long-range interaction of magnetic moments in a coupled system of superconductor-ferromagnet-superconductor Josephson junctions with anomalous ground-state phase shift // Physical Review B. 2022. Vol. 105. No. 2. 024513

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Bobkov G. A., Bobkova I., Bobkov A. Long-range interaction of magnetic moments in a coupled system of superconductor-ferromagnet-superconductor Josephson junctions with anomalous ground-state phase shift // Physical Review B. 2022. Vol. 105. No. 2. 024513

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TY - JOUR

DO - 10.1103/PhysRevB.105.024513

UR - https://doi.org/10.1103%2FPhysRevB.105.024513

TI - Long-range interaction of magnetic moments in a coupled system of superconductor-ferromagnet-superconductor Josephson junctions with anomalous ground-state phase shift

T2 - Physical Review B

AU - Bobkov, G. A.

AU - Bobkova, I. V.

AU - Bobkov, A. M.

PY - 2022

DA - 2022/01/18 00:00:00

PB - American Physical Society (APS)

IS - 2

VL - 105

SN - 2469-9950

SN - 2469-9969

SN - 1098-0121

SN - 1550-235X

ER -

BibTex

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BibTex Copy

@article{2022_Bobkov,

author = {G. A. Bobkov and I. V. Bobkova and A. M. Bobkov},

title = {Long-range interaction of magnetic moments in a coupled system of superconductor-ferromagnet-superconductor Josephson junctions with anomalous ground-state phase shift},

journal = {Physical Review B},

year = {2022},

volume = {105},

publisher = {American Physical Society (APS)},

month = {jan},

url = {https://doi.org/10.1103%2FPhysRevB.105.024513},

number = {2},

doi = {10.1103/PhysRevB.105.024513}

}

Found error?

Publisher

American Physical Society (APS)

Journal

Physical Review B

Quartile SCImago

Quartile WOS

Impact factor

3.7

ISSN

24699950 (Print)
24699969 (Electronic)
10980121 (Print)
1550235X (Electronic)

Labs

Laboratory of Spin Phenomena in superconducting nanostructures and Devices

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