Unipolar conductivity of SrTi[O.sub.3] crystals with light-induced drop in electrical resistance

Unipolar conductivity of SrTi[O.sub.3] crystals with light-induced drop in electrical resistance

This paper reports on the results of the experimental investigation of unipolar (diode) currentvoltage characteristics of local regions in high-resistance SrTi[O.sub.3] crystals that experienced a light-induced drop in electrical resistance. This behavior has been explained by the influence exerted...

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Veröffentlicht in:Physics of the solid state 2016-05, Vol.58 (5), p.933
Hauptverfasser: Shablaev, S.I, Grachev, A.I
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Analysis
Electric properties
Electrical conductivity
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description This paper reports on the results of the experimental investigation of unipolar (diode) currentvoltage characteristics of local regions in high-resistance SrTi[O.sub.3] crystals that experienced a light-induced drop in electrical resistance. This behavior has been explained by the influence exerted on the electrical conductivity by the irradiated region in the Schottky barrier of one of the contacts. The ideality factor of the Schottky barrier has been determined and the barrier height for a number of regions has been estimated from measurements of the forward branch of the current-voltage characteristics. An analysis of the specific features in the behavior of the reverse branch of the current-voltage characteristics has revealed that, in the SrTi[O.sub.3] crystals with p-type conductivity, the resistance switching occurs through a pure electronic mechanism, in contrast to models based on electrochemical processes, in particular, the migration of oxygen vacancies.
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This behavior has been explained by the influence exerted on the electrical conductivity by the irradiated region in the Schottky barrier of one of the contacts. The ideality factor of the Schottky barrier has been determined and the barrier height for a number of regions has been estimated from measurements of the forward branch of the current-voltage characteristics. An analysis of the specific features in the behavior of the reverse branch of the current-voltage characteristics has revealed that, in the SrTi[O.sub.3] crystals with p-type conductivity, the resistance switching occurs through a pure electronic mechanism, in contrast to models based on electrochemical processes, in particular, the migration of oxygen vacancies.</description><identifier>ISSN: 1063-7834</identifier><identifier>EISSN: 1090-6460</identifier><identifier>DOI: 10.1134/S1063783416050231</identifier><language>eng</language><publisher>Springer</publisher><subject>Analysis ; Electric properties ; Electrical conductivity</subject><ispartof>Physics of the solid state, 2016-05, Vol.58 (5), p.933</ispartof><rights>COPYRIGHT 2016 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27923,27924</link.rule.ids></links><search><creatorcontrib>Shablaev, S.I</creatorcontrib><creatorcontrib>Grachev, A.I</creatorcontrib><title>Unipolar conductivity of SrTi[O.sub.3] crystals with light-induced drop in electrical resistance</title><title>Physics of the solid state</title><description>This paper reports on the results of the experimental investigation of unipolar (diode) currentvoltage characteristics of local regions in high-resistance SrTi[O.sub.3] crystals that experienced a light-induced drop in electrical resistance. 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Electrical conductivity
title Unipolar conductivity of SrTi[O.sub.3] crystals with light-induced drop in electrical resistance
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