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Article: Current induced metastable states and abnormal electroresistance effect in epitaxial thin films of La0.8Ca0.2MnO3

TitleCurrent induced metastable states and abnormal electroresistance effect in epitaxial thin films of La0.8Ca0.2MnO3
Authors
KeywordsC. metastable states
Electroresistance
Meta-stable state
Epitaxial films
Manganese oxide
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ssc
Citation
Solid State Communications, 2011, v. 151 n. 18, p. 1293-1295 How to Cite?
AbstractBy applying an electric current to La0.8Ca0.2MnO3 films at 20 K, a high-resistive state is excited near the Curie point. Such a current induced metastable state turns out to be extremely sensitive to weak measuring currents. When the measuring current changes from 1 to 20 μA, the peak resistance near the metal–insulator transition temperature is reduced from 366 to , showing a remarkably enhanced electroresistance effect (ER=[R(0)−R(I)]/R(0)=70%). Also, in contrast to the previous reports, the metal–insulator transition shifts to a higher temperature. Our experiments show that the high-resistive state is metastable and cannot be removed by reversing the current direction. These behaviors yield a possibility to modulate the metal–insulator phase transition by using electric currents.
Persistent Identifierhttp://hdl.handle.net/10722/142478
ISSN
2015 Impact Factor: 1.458
2015 SCImago Journal Rankings: 0.776
ISI Accession Number ID
Funding AgencyGrant Number
Research Grant Council of Hong KongHKU7024/09P
University Research Committee of HKU
Funding Information:

This work has been supported by the Research Grant Council of Hong Kong (Project No. HKU7024/09P) and the University Research Committee of HKU.

 

DC FieldValueLanguage
dc.contributor.authorChen, LPen_US
dc.contributor.authorGao, Jen_US
dc.date.accessioned2011-10-28T02:46:51Z-
dc.date.available2011-10-28T02:46:51Z-
dc.date.issued2011en_US
dc.identifier.citationSolid State Communications, 2011, v. 151 n. 18, p. 1293-1295en_US
dc.identifier.issn0038-1098en_US
dc.identifier.urihttp://hdl.handle.net/10722/142478-
dc.description.abstractBy applying an electric current to La0.8Ca0.2MnO3 films at 20 K, a high-resistive state is excited near the Curie point. Such a current induced metastable state turns out to be extremely sensitive to weak measuring currents. When the measuring current changes from 1 to 20 μA, the peak resistance near the metal–insulator transition temperature is reduced from 366 to , showing a remarkably enhanced electroresistance effect (ER=[R(0)−R(I)]/R(0)=70%). Also, in contrast to the previous reports, the metal–insulator transition shifts to a higher temperature. Our experiments show that the high-resistive state is metastable and cannot be removed by reversing the current direction. These behaviors yield a possibility to modulate the metal–insulator phase transition by using electric currents.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/sscen_US
dc.relation.ispartofSolid State Communicationsen_US
dc.subjectC. metastable states-
dc.subjectElectroresistance-
dc.subjectMeta-stable state-
dc.subjectEpitaxial films-
dc.subjectManganese oxide-
dc.titleCurrent induced metastable states and abnormal electroresistance effect in epitaxial thin films of La0.8Ca0.2MnO3en_US
dc.typeArticleen_US
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0038-1098&volume=151&issue=18&spage=1293&epage=1295&date=2011&atitle=Current+induced+metastable+states+and+abnormal+electroresistance+effect+in++epitaxial+thin+films+of+La0.8Ca0.2MnO3en_US
dc.identifier.emailGao, J: jugao@hku.hken_US
dc.identifier.authorityGao, J=rp00699en_US
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.ssc.2011.05.034-
dc.identifier.scopuseid_2-s2.0-79961170950-
dc.identifier.hkuros196808en_US
dc.identifier.volume151en_US
dc.identifier.issue18en_US
dc.identifier.spage1293en_US
dc.identifier.epage1295en_US
dc.identifier.isiWOS:000295236400021-

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