skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Giant switchable Rashba effect in oxide heterostructures

Abstract

One of the most fundamental phenomena and a reminder of the electron’s relativistic nature is the Rashba spin splitting for broken inversion symmetry. Usually this splitting is a tiny relativistic correction. Interfacing ferroelectric BaTiO₃ and a 5d (or 4d) transition metal oxide with a large spin-orbit coupling, Ba(Os,Ir,Ru)O₃, we show that giant Rashba spin splittings are indeed possible and even controllable by an external electric field. Based on density functional theory and a microscopic tight binding understanding, we conclude that the electric field is amplified and stored as a ferroelectric Ti-O distortion which, through the network of oxygen octahedra, induces a large (Os,Ir,Ru)-O distortion. The BaTiO₃/Ba(Os,Ru,Ir)O₃ heterostructure is hence the ideal test station for switching and studying the Rashba effect and allows applications at room temperature.

Authors:
 [1];  [1];  [2];  [3];  [4];  [1]
  1. Vienna Univ. of Technology, Vienna (Austria)
  2. Vienna Univ. of Technology, Vienna (Austria); Yancheng Inst. of Technology (China)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Computational Condensed Matter Physics Lab., Wako, Saitama (Japan); Advanced Inst. for Computational Science, Kobe, Hyogo (Japan); Center for Emergent Matter Science, Wako, Saitama (Japan)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1182510
Grant/Contract Number:
SC00112704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Advanced Materials Interfaces
Additional Journal Information:
Journal Volume: 2; Journal Issue: 5; Journal ID: ISSN 2196-7350
Publisher:
Wiley-VCH
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; oxide heterostructures; spin orbit coupling; rashba effect; ferroelectricity

Citation Formats

Zhong, Zhicheng, Si, Liang, Zhang, Qinfang, Yin, Wei-Guo, Yunoki, Seiji, and Held, Karsten. Giant switchable Rashba effect in oxide heterostructures. United States: N. p., 2015. Web. doi:10.1002/admi.201400445.
Zhong, Zhicheng, Si, Liang, Zhang, Qinfang, Yin, Wei-Guo, Yunoki, Seiji, & Held, Karsten. Giant switchable Rashba effect in oxide heterostructures. United States. doi:10.1002/admi.201400445.
Zhong, Zhicheng, Si, Liang, Zhang, Qinfang, Yin, Wei-Guo, Yunoki, Seiji, and Held, Karsten. Sun . "Giant switchable Rashba effect in oxide heterostructures". United States. doi:10.1002/admi.201400445. https://www.osti.gov/servlets/purl/1182510.
@article{osti_1182510,
title = {Giant switchable Rashba effect in oxide heterostructures},
author = {Zhong, Zhicheng and Si, Liang and Zhang, Qinfang and Yin, Wei-Guo and Yunoki, Seiji and Held, Karsten},
abstractNote = {One of the most fundamental phenomena and a reminder of the electron’s relativistic nature is the Rashba spin splitting for broken inversion symmetry. Usually this splitting is a tiny relativistic correction. Interfacing ferroelectric BaTiO₃ and a 5d (or 4d) transition metal oxide with a large spin-orbit coupling, Ba(Os,Ir,Ru)O₃, we show that giant Rashba spin splittings are indeed possible and even controllable by an external electric field. Based on density functional theory and a microscopic tight binding understanding, we conclude that the electric field is amplified and stored as a ferroelectric Ti-O distortion which, through the network of oxygen octahedra, induces a large (Os,Ir,Ru)-O distortion. The BaTiO₃/Ba(Os,Ru,Ir)O₃ heterostructure is hence the ideal test station for switching and studying the Rashba effect and allows applications at room temperature.},
doi = {10.1002/admi.201400445},
journal = {Advanced Materials Interfaces},
number = 5,
volume = 2,
place = {United States},
year = {Sun Mar 01 00:00:00 EST 2015},
month = {Sun Mar 01 00:00:00 EST 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

Save / Share: