Magnetization reversal and emergent magnetic monopole-like state in square artificial spin ice vertex with defects

Magnetization reversal and emergent magnetic monopole-like state in square artificial spin ice vertex with defects

We have investigated the micro-magnetic behavior as well as magnetization reversal of dipolar coupled magnetic nanoislands with strong shape anisotropy arranged in a square artificial spin ice geometry. Our 0 K-temperature simulation results show that metastable two-in two-out state is stabilized at...

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Main Authors: Neeti Keswani, Pintu Das
Format: Article
Language:English
Published: AIP Publishing LLC 2018-10-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.5042803
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spelling doaj-975b7bfd4e7643d0a99c9f2b575586232020-11-24T21:49:46ZengAIP Publishing LLCAIP Advances2158-32262018-10-01810101501101501-610.1063/1.5042803033893ADVMagnetization reversal and emergent magnetic monopole-like state in square artificial spin ice vertex with defectsNeeti Keswani0Pintu Das1Department of Physics, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, IndiaDepartment of Physics, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, IndiaWe have investigated the micro-magnetic behavior as well as magnetization reversal of dipolar coupled magnetic nanoislands with strong shape anisotropy arranged in a square artificial spin ice geometry. Our 0 K-temperature simulation results show that metastable two-in two-out state is stabilized at remanence of regular configurations. A complex interplay of defects and dipolar interaction leads to a predictable three-in one-out or three-out one-in higher energy state. Switching of the magnetic states is defined by the reduction of the no. of high-energy head-to-head or tail-to tail magnetic state.http://dx.doi.org/10.1063/1.5042803
collection DOAJ
language English
format Article
sources DOAJ
author Neeti Keswani
Pintu Das
spellingShingle Neeti Keswani
Pintu Das
Magnetization reversal and emergent magnetic monopole-like state in square artificial spin ice vertex with defects
AIP Advances
author_facet Neeti Keswani
Pintu Das
author_sort Neeti Keswani
title Magnetization reversal and emergent magnetic monopole-like state in square artificial spin ice vertex with defects
title_short Magnetization reversal and emergent magnetic monopole-like state in square artificial spin ice vertex with defects
title_full Magnetization reversal and emergent magnetic monopole-like state in square artificial spin ice vertex with defects
title_fullStr Magnetization reversal and emergent magnetic monopole-like state in square artificial spin ice vertex with defects
title_full_unstemmed Magnetization reversal and emergent magnetic monopole-like state in square artificial spin ice vertex with defects
title_sort magnetization reversal and emergent magnetic monopole-like state in square artificial spin ice vertex with defects
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2018-10-01
description We have investigated the micro-magnetic behavior as well as magnetization reversal of dipolar coupled magnetic nanoislands with strong shape anisotropy arranged in a square artificial spin ice geometry. Our 0 K-temperature simulation results show that metastable two-in two-out state is stabilized at remanence of regular configurations. A complex interplay of defects and dipolar interaction leads to a predictable three-in one-out or three-out one-in higher energy state. Switching of the magnetic states is defined by the reduction of the no. of high-energy head-to-head or tail-to tail magnetic state.
url http://dx.doi.org/10.1063/1.5042803
work_keys_str_mv AT neetikeswani magnetizationreversalandemergentmagneticmonopolelikestateinsquareartificialspinicevertexwithdefects
AT pintudas magnetizationreversalandemergentmagneticmonopolelikestateinsquareartificialspinicevertexwithdefects
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