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Title: Transition-Metal Oxide (111) Bilayers

Correlated electron systems on a honeycomb lattice have emerged as a fertile playground to explore exotic electronic phenomena. Theoretical and experimental work has appeared to realize novel behavior, including quantum Hall effects and valleytronics, mainly focusing on van der Waals compounds, such as graphene, chalcogenides, and halides. Here in this paper, we review our theoretical study on perovskite transition-metal oxides (TMOs) as an alternative system to realize such exotic phenomena. We demonstrate that novel quantum Hall effects and related phenomena associated with the honeycomb structure could be artificially designed by such TMOs by growing their heterostructures along the [111] crystallographic axis. One of the important predictions is that such TMO heterostructures could support two-dimensional topological insulating states. The strong correlation effects inherent to TM d electrons further enrich the behavior.
Authors:
ORCiD logo [1] ;  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  2. Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Physics
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Journal of the Physical Society of Japan
Additional Journal Information:
Journal Volume: 87; Journal Issue: 4; Journal ID: ISSN 0031-9015
Publisher:
Physical Society of Japan
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1423108

Okamoto, Satoshi, and Xiao, Di. Transition-Metal Oxide (111) Bilayers. United States: N. p., Web. doi:10.7566/JPSJ.87.041006.
Okamoto, Satoshi, & Xiao, Di. Transition-Metal Oxide (111) Bilayers. United States. doi:10.7566/JPSJ.87.041006.
Okamoto, Satoshi, and Xiao, Di. 2018. "Transition-Metal Oxide (111) Bilayers". United States. doi:10.7566/JPSJ.87.041006.
@article{osti_1423108,
title = {Transition-Metal Oxide (111) Bilayers},
author = {Okamoto, Satoshi and Xiao, Di},
abstractNote = {Correlated electron systems on a honeycomb lattice have emerged as a fertile playground to explore exotic electronic phenomena. Theoretical and experimental work has appeared to realize novel behavior, including quantum Hall effects and valleytronics, mainly focusing on van der Waals compounds, such as graphene, chalcogenides, and halides. Here in this paper, we review our theoretical study on perovskite transition-metal oxides (TMOs) as an alternative system to realize such exotic phenomena. We demonstrate that novel quantum Hall effects and related phenomena associated with the honeycomb structure could be artificially designed by such TMOs by growing their heterostructures along the [111] crystallographic axis. One of the important predictions is that such TMO heterostructures could support two-dimensional topological insulating states. The strong correlation effects inherent to TM d electrons further enrich the behavior.},
doi = {10.7566/JPSJ.87.041006},
journal = {Journal of the Physical Society of Japan},
number = 4,
volume = 87,
place = {United States},
year = {2018},
month = {4}
}