Temperature-dependent tunneling electroresistance in Pt/BaTiO 3/SrRuO3 ferroelectric tunnel junctions

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

32 Scopus Citations
View graph of relations

Author(s)

Detail(s)

Original languageEnglish
Article number132913
Journal / PublicationApplied Physics Letters
Volume103
Issue number13
Publication statusPublished - 23 Sept 2013
Externally publishedYes

Abstract

Tunneling electroresistance of Pt/BaTiO3/SrRuO3 ferroelectric tunnel junctions is investigated as a function of temperature. Two distinct resistance states that are dependent on polarization direction in the BaTiO3 barrier layer and bipolar resistance switching are observed at various temperatures from 10 to 290 K. The ON/OFF current ratio of Pt/BaTiO3/SrRuO3 tunnel junctions increases monotonically with decreasing temperature above 50 K and saturates below 50 K. The enhanced tunneling electroresistance at low temperatures can be ascribed to the suppression of thermally assisted indirect tunneling, which is less sensitive to the polarization reversal of BaTiO3 compared to the direct tunneling. © 2013 AIP Publishing LLC.

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].