Effect of ferroelectricity on electron transport in Pt/BaTiO3/Pt tunnel junctions

J. P. Velev; Chun Gang Duan; K. D. Belashchenko; S. S. Jaswal; E. Y. Tsymbal

doi:10.1103/PhysRevLett.98.137201

Effect of ferroelectricity on electron transport in Pt/BaTiO3/Pt tunnel junctions

J. P. Velev^*
, Chun Gang Duan
, K. D. Belashchenko
, S. S. Jaswal
, E. Y. Tsymbal

^*Corresponding author for this work

University of Nebraska-Lincoln

Research output: Contribution to journal › Article › peer-review

173 Scopus citations

Abstract

Based on first-principles calculations, we demonstrate the impact of the electric polarization on electron transport in ferroelectric tunnel junctions (FTJs). Using a Pt/BaTiO3/Pt FTJ as a model system, we show that the polarization of the BaTiO3 barrier leads to a substantial drop in the tunneling conductance due to changes in the electronic structure driven by ferroelectric displacements. We find a sizable change in the transmission probability across the Pt/BaTiO3 interface with polarization reversal, a signature of the electroresistance effect. These results reveal exciting prospects that FTJs offer as resistive switches in nanoscale electronic devices.

Original language	English
Article number	137201
Journal	Physical Review Letters
Volume	98
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.98.137201
State	Published - 27 Mar 2007
Externally published	Yes

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title = "Effect of ferroelectricity on electron transport in Pt/BaTiO3/Pt tunnel junctions",

abstract = "Based on first-principles calculations, we demonstrate the impact of the electric polarization on electron transport in ferroelectric tunnel junctions (FTJs). Using a Pt/BaTiO3/Pt FTJ as a model system, we show that the polarization of the BaTiO3 barrier leads to a substantial drop in the tunneling conductance due to changes in the electronic structure driven by ferroelectric displacements. We find a sizable change in the transmission probability across the Pt/BaTiO3 interface with polarization reversal, a signature of the electroresistance effect. These results reveal exciting prospects that FTJs offer as resistive switches in nanoscale electronic devices.",

author = "Velev, \{J. P.\} and Duan, \{Chun Gang\} and Belashchenko, \{K. D.\} and Jaswal, \{S. S.\} and Tsymbal, \{E. Y.\}",

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doi = "10.1103/PhysRevLett.98.137201",

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AU - Velev, J. P.

AU - Duan, Chun Gang

AU - Belashchenko, K. D.

AU - Jaswal, S. S.

AU - Tsymbal, E. Y.

PY - 2007/3/27

Y1 - 2007/3/27

N2 - Based on first-principles calculations, we demonstrate the impact of the electric polarization on electron transport in ferroelectric tunnel junctions (FTJs). Using a Pt/BaTiO3/Pt FTJ as a model system, we show that the polarization of the BaTiO3 barrier leads to a substantial drop in the tunneling conductance due to changes in the electronic structure driven by ferroelectric displacements. We find a sizable change in the transmission probability across the Pt/BaTiO3 interface with polarization reversal, a signature of the electroresistance effect. These results reveal exciting prospects that FTJs offer as resistive switches in nanoscale electronic devices.

AB - Based on first-principles calculations, we demonstrate the impact of the electric polarization on electron transport in ferroelectric tunnel junctions (FTJs). Using a Pt/BaTiO3/Pt FTJ as a model system, we show that the polarization of the BaTiO3 barrier leads to a substantial drop in the tunneling conductance due to changes in the electronic structure driven by ferroelectric displacements. We find a sizable change in the transmission probability across the Pt/BaTiO3 interface with polarization reversal, a signature of the electroresistance effect. These results reveal exciting prospects that FTJs offer as resistive switches in nanoscale electronic devices.

UR - https://www.scopus.com/pages/publications/33947662103

U2 - 10.1103/PhysRevLett.98.137201

DO - 10.1103/PhysRevLett.98.137201

M3 - 文章

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VL - 98

JO - Physical Review Letters

JF - Physical Review Letters

IS - 13

M1 - 137201

ER -

Effect of ferroelectricity on electron transport in Pt/BaTiO3/Pt tunnel junctions

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