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Title: Strongly enhanced Rashba splittings in an oxide heterostructure: A tantalate monolayer on BaHfO 3

Abstract

In the two-dimensional electron gas emerging at the transition metal oxide surface and interface, various exotic electronic ordering and topological phases can become experimentally more accessible with the stronger Rashba spin-orbit interaction. Here, we present a promising route to realize significant Rashba-type band splitting using a thin film heterostructure. Based on first-principles methods and analytic model analyses, a tantalate monolayer on BaHfO3 is shown to host two-dimensional bands originating from Ta t2g states with strong Rashba spin splittings, nearly 10% of the bandwidth, at both the band minima and saddle points. An important factor in this enhanced splitting is the significant t2g–eg interband coupling, which can generically arise when the inversion symmetry is maximally broken due to the strong confinement of the 2DEG on a transition metal oxide surface. Here, our results could be useful in realizing topological superconductivity at oxide surfaces.

Authors:
 [1];  [2];  [3]
  1. Seoul National Univ., Seoul (Korea, Republic of); Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Seoul National Univ., Seoul (Korea, Republic of); Pohang Univ. of Science and Technology, Pohang (Korea)
  3. Seoul National Univ., Seoul (Korea, Republic of); Institute for Basic Science (IBS), Seoul (Korea)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1337673
Alternate Identifier(s):
OSTI ID: 1326119
Report Number(s):
IS-J-9107
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 94; Journal Issue: 11; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Kim, Minsung, Ihm, Jisoon, and Chung, Suk Bum. Strongly enhanced Rashba splittings in an oxide heterostructure: A tantalate monolayer on BaHfO3. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.94.115431.
Kim, Minsung, Ihm, Jisoon, & Chung, Suk Bum. Strongly enhanced Rashba splittings in an oxide heterostructure: A tantalate monolayer on BaHfO3. United States. https://doi.org/10.1103/PhysRevB.94.115431
Kim, Minsung, Ihm, Jisoon, and Chung, Suk Bum. Thu . "Strongly enhanced Rashba splittings in an oxide heterostructure: A tantalate monolayer on BaHfO3". United States. https://doi.org/10.1103/PhysRevB.94.115431. https://www.osti.gov/servlets/purl/1337673.
@article{osti_1337673,
title = {Strongly enhanced Rashba splittings in an oxide heterostructure: A tantalate monolayer on BaHfO3},
author = {Kim, Minsung and Ihm, Jisoon and Chung, Suk Bum},
abstractNote = {In the two-dimensional electron gas emerging at the transition metal oxide surface and interface, various exotic electronic ordering and topological phases can become experimentally more accessible with the stronger Rashba spin-orbit interaction. Here, we present a promising route to realize significant Rashba-type band splitting using a thin film heterostructure. Based on first-principles methods and analytic model analyses, a tantalate monolayer on BaHfO3 is shown to host two-dimensional bands originating from Ta t2g states with strong Rashba spin splittings, nearly 10% of the bandwidth, at both the band minima and saddle points. An important factor in this enhanced splitting is the significant t2g–eg interband coupling, which can generically arise when the inversion symmetry is maximally broken due to the strong confinement of the 2DEG on a transition metal oxide surface. Here, our results could be useful in realizing topological superconductivity at oxide surfaces.},
doi = {10.1103/PhysRevB.94.115431},
journal = {Physical Review B},
number = 11,
volume = 94,
place = {United States},
year = {Thu Sep 22 00:00:00 EDT 2016},
month = {Thu Sep 22 00:00:00 EDT 2016}
}

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Works referenced in this record:

Intrinsic spin-orbit coupling in superconducting δ -doped SrTiO 3 heterostructures
journal, August 2012


Giant spin splitting of the two-dimensional electron gas at the surface of SrTiO3
journal, October 2014

  • Santander-Syro, A. F.; Fortuna, F.; Bareille, C.
  • Nature Materials, Vol. 13, Issue 12
  • DOI: 10.1038/nmat4107

Creation and control of a two-dimensional electron liquid at the bare SrTiO3 surface
journal, January 2011

  • Meevasana, W.; King, P. D. C.; He, R. H.
  • Nature Materials, Vol. 10, Issue 2
  • DOI: 10.1038/nmat2943

Origin and transport signatures of spin-orbit interactions in one- and two-dimensional SrTiO 3 -based heterostructures
journal, June 2013


Theory of t 2 g electron-gas Rashba interactions
journal, July 2013


Orbital-Angular-Momentum Based Origin of Rashba-Type Surface Band Splitting
journal, October 2011


Electron density and atomic displacements in KTaO 3
journal, August 2000

  • Zhurova, Elizabeth A.; Ivanov, Yury; Zavodnik, Valery
  • Acta Crystallographica Section B Structural Science, Vol. 56, Issue 4
  • DOI: 10.1107/S0108768100003906

Projector augmented-wave method
journal, December 1994


Oxide Interfaces--An Opportunity for Electronics
journal, March 2010


Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3
journal, September 2012


Subband Structure of a Two-Dimensional Electron Gas Formed at the Polar Surface of the Strong Spin-Orbit Perovskite KTaO 3
journal, March 2012


Truncation of a Two-Dimensional Fermi Surface due to Quasiparticle Gap Formation at the Saddle Points
journal, October 1998


Gate-Controlled Spin Injection at LaAlO 3 / SrTiO 3 Interfaces
journal, April 2012


Chiral superconductivity from repulsive interactions in doped graphene
journal, January 2012

  • Nandkishore, Rahul; Levitov, L. S.; Chubukov, A. V.
  • Nature Physics, Vol. 8, Issue 2
  • DOI: 10.1038/nphys2208

wannier90: A tool for obtaining maximally-localised Wannier functions
journal, May 2008

  • Mostofi, Arash A.; Yates, Jonathan R.; Lee, Young-Su
  • Computer Physics Communications, Vol. 178, Issue 9
  • DOI: 10.1016/j.cpc.2007.11.016

Dislocation Majorana zero modes in perovskite oxide 2DEG
journal, May 2016

  • Chung, Suk Bum; Chan, Cheung; Yao, Hong
  • Scientific Reports, Vol. 6, Issue 1
  • DOI: 10.1038/srep25184

Tunable ferroelectric polarization and its interplay with spin–orbit coupling in tin iodide perovskites
journal, December 2014

  • Stroppa, Alessandro; Di Sante, Domenico; Barone, Paolo
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms6900

Spin-Flip Transitions Induced by Time-Dependent Electric Fields in Surfaces with Strong Spin-Orbit Interaction
journal, October 2012


Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set
journal, October 1996


Topological odd-parity superconductivity at type-II two-dimensional van Hove singularities
journal, July 2015


Thermal and mechanical properties of perovskite-type barium hafnate
journal, January 2006


Maximally localized generalized Wannier functions for composite energy bands
journal, November 1997


Superconductivity and Antiferromagnetism in the Two-Dimensional Hubbard Model: Scaling Theory
journal, September 1987


Restoring the Density-Gradient Expansion for Exchange in Solids and Surfaces
journal, April 2008


Orbital Rashba effect and its detection by circular dichroism angle-resolved photoemission spectroscopy
journal, May 2012


Spin--Orbit Coupling Effects in Two-Dimensional Electron and Hole Systems
book, January 2003

  • Winkler, Roland; Höhler, Gerhard; Kühn, Johann H.
  • Springer Tracts in Modern Physics, Vol. 191
  • DOI: 10.1007/b13586

Spin and orbital angular momentum structure of Cu(111) and Au(111) surface states
journal, May 2012


An Emergent Change of Phase for Electronics
journal, March 2010


Kohn-Luttinger superconductivity in graphene
journal, November 2008


A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface
journal, January 2004


Tunable Quasi-Two-Dimensional Electron Gases in Oxide Heterostructures
journal, September 2006


Ab initiomolecular dynamics for liquid metals
journal, January 1993


Theoretical model for Rashba spin-orbit interaction in d electrons
journal, October 2014


Metallic Quantum Well States in Artificial Structures of Strongly Correlated Oxide
journal, July 2011


Electric Field Tuning of the Rashba Effect in the Polar Perovskite Structures
journal, February 2014


Field-effect transistors with SrHfO3 as gate oxide
journal, July 2006

  • Rossel, C.; Mereu, B.; Marchiori, C.
  • Applied Physics Letters, Vol. 89, Issue 5
  • DOI: 10.1063/1.2236464

Fundamentals of Semiconductors
book, January 2010


Nature of orbital and spin Rashba coupling in the surface bands of SrTiO 3 and KTaO 3
journal, November 2014


Theory of spin-orbit coupling at LaAlO 3 /SrTiO 3 interfaces and SrTiO 3 surfaces
journal, April 2013


Spin-Orbit Coupling Effects in Zinc Blende Structures
journal, October 1955


Topological superconductivity and unconventional pairing in oxide interfaces
journal, January 2015

  • Scheurer, Mathias S.; Schmalian, Jörg
  • Nature Communications, Vol. 6, Issue 1
  • DOI: 10.1038/ncomms7005

Spin responses and effective Hamiltonian for the two-dimensional electron gas at the oxide interface LaAlO 3 / SrTiO 3
journal, June 2015


Maximally localized Wannier functions for entangled energy bands
journal, December 2001


Tunable Rashba Spin-Orbit Interaction at Oxide Interfaces
journal, March 2010


Topological p + i p superconductivity in doped graphene-like single-sheet materials BC 3
journal, November 2015


Two-dimensional electron gas with universal subbands at the surface of SrTiO3
journal, January 2011

  • Santander-Syro, A. F.; Copie, O.; Kondo, T.
  • Nature, Vol. 469, Issue 7329, p. 189-193
  • DOI: 10.1038/nature09720

Tuning Spin-Orbit Coupling and Superconductivity at the SrTiO 3 / LaAlO 3 Interface: A Magnetotransport Study
journal, March 2010


Thermal and Mechanical Properties of Perovskite-Type Barium Hafnate.
journal, March 2006

  • Maekawa, Takuji; Kurosaki, Ken; Yamanaka, Shinsuke
  • ChemInform, Vol. 37, Issue 13
  • DOI: 10.1002/chin.200613011

Electronic structure of AlFeN films exhibiting crystallographic orientation change from c- to a-axis with Fe concentrations and annealing effect
journal, February 2020


Fundamentals of Semiconductors: Physics and Materials Properties
book, January 2005

  • Yu, Peter Y.; Cardona, Manuel
  • Graduate Texts in Physics
  • DOI: 10.1007/b137661

Spin and Orbital Angular Momentum Structures of Cu(111) and Au(111) Surface States
text, January 2011


Maximally-localized Wannier functions for entangled energy bands
text, January 2001


Works referencing / citing this record:

Dislocation Majorana zero modes in perovskite oxide 2DEG
journal, May 2016

  • Chung, Suk Bum; Chan, Cheung; Yao, Hong
  • Scientific Reports, Vol. 6, Issue 1
  • DOI: 10.1038/srep25184