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2009 | 7 | 2 | 304-309
Tytuł artykułu

Interface resistive switching effects in bulk manganites

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A physical mechanism driving the resistance switching in heterocontacts, formed by a metal counterelectrode and electrically conducting bulk perovskite manganites, is discussed. The nature of the inelastic, charge-hopping transport inside insulating and strongly inhomogeneous metal/manganite interfaces is studied theoretically. Comparison with measured current-voltage characteristics for a La0.67Ca0.33MnO3/Ag heterostructure in a high-resistance state reveals the presence of one or more charge traps along a conduction path within the interface. In a low-resistance state the main charge-transferring events are direct tunneling ones. The analysis of electrical noise measurements for a La0.82Ca0.18MnO3 single crystal in three different charge-transport regimes shows scattering centers with a broad, flat spectrum of excitation states, independent of manganite electrical and/or magnetic characteristics. All of these results are consistent with an oxygen-drift model for a bistable resistance state in perovskites.
Wydawca

Czasopismo
Rocznik
Tom
7
Numer
2
Strony
304-309
Opis fizyczny
Daty
wydano
2009-06-01
online
2009-04-26
Twórcy
  • Donetsk Physical and Technical Institute, National Academy of Sciences of Ukraine, Donetsk, 83114, Ukraine, belogolovskii@rambler.ru
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-009-0012-1
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