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Originalveröffentlichung
DOI: 10.1002/aelm.201800028

Local Joule Heating Mimicking Electroresistance-Like Behavior in Antiperovskite Mn3GaC [in press]

Deng, Sihao; Fischer, Gerda; Srichandan, Sasmita; Wang, Lielin; Wang, Cong; Sürgers, Christoph

Abstract:
Electroresistance has become a stimulating research topic because of its potential applications in next-generation nonvolatile memory technology. Here, an electroresistance-like behavior of the antiperovskite Mn3GaC compound around the antiferromagnetic–intermediate phase transition is reported. A high sensing current significantly decreases the fraction of the antiferromagnetic phase of higher resistivity relative to the intermediate phase of lower resistivity upon warming, showing a resistivity change up to 50 %. Through extensive studies of the resistivity at different sample locations and of the magnetization under applied current, it is unambiguously shown that this electroresistance-like behavior originates from the local Joule heating of the sample due to high-resistive lead contacts and not from an intrinsic effect. These findings open an available avenue to explore electroresistance-like behavior by achieving phase coexistence of a high- and low-resistivity phase under the driving force of local Joule heating.


Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2199-160X
KITopen ID: 1000084998
Erschienen in Advanced electronic materials
Seiten Art.-Nr.:1800028/1-6
Vorab online veröffentlicht am 15.07.2018
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