Macroscopic magnetization tunneling in the Josephson φ0 junction

Macroscopic magnetization tunneling in the Josephson φ0 junction

We consider quantum tunneling of the magnetic moment controlled by the bias current and the magnetic field along the general direction in the Josephson φ0 junction. Different forms of the energy barriers can be generated by the magnitude and direction of the current and the magnetic field. Employing...

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Main Author: Gwang-Hee Kim
Format: Article
Language:English
Published: AIP Publishing LLC 2019-12-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.5130138
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spelling doaj-c49de033f47446b2acbe9c15dfe3e7882020-11-25T01:54:56ZengAIP Publishing LLCAIP Advances2158-32262019-12-01912125227125227-410.1063/1.5130138Macroscopic magnetization tunneling in the Josephson φ0 junctionGwang-Hee Kim0Department of Physics and Astronomy, Sejong University, Seoul 05006, South KoreaWe consider quantum tunneling of the magnetic moment controlled by the bias current and the magnetic field along the general direction in the Josephson φ0 junction. Different forms of the energy barriers can be generated by the magnitude and direction of the current and the magnetic field. Employing the instanton technique, we present the analytic formulas of the tunneling rate in the uniaxial and nonuniaxial symmetries, and discuss that the Josephson junction is ideally suited for the study of the magnetic tunneling.http://dx.doi.org/10.1063/1.5130138
collection DOAJ
language English
format Article
sources DOAJ
author Gwang-Hee Kim
spellingShingle Gwang-Hee Kim
Macroscopic magnetization tunneling in the Josephson φ0 junction
AIP Advances
author_facet Gwang-Hee Kim
author_sort Gwang-Hee Kim
title Macroscopic magnetization tunneling in the Josephson φ0 junction
title_short Macroscopic magnetization tunneling in the Josephson φ0 junction
title_full Macroscopic magnetization tunneling in the Josephson φ0 junction
title_fullStr Macroscopic magnetization tunneling in the Josephson φ0 junction
title_full_unstemmed Macroscopic magnetization tunneling in the Josephson φ0 junction
title_sort macroscopic magnetization tunneling in the josephson φ0 junction
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2019-12-01
description We consider quantum tunneling of the magnetic moment controlled by the bias current and the magnetic field along the general direction in the Josephson φ0 junction. Different forms of the energy barriers can be generated by the magnitude and direction of the current and the magnetic field. Employing the instanton technique, we present the analytic formulas of the tunneling rate in the uniaxial and nonuniaxial symmetries, and discuss that the Josephson junction is ideally suited for the study of the magnetic tunneling.
url http://dx.doi.org/10.1063/1.5130138
work_keys_str_mv AT gwangheekim macroscopicmagnetizationtunnelinginthejosephsonph0junction
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