Orbital Selectivity Enhanced by Nematic Order in FeSe
Abstract
Motivated by the recent low-temperature experiments on bulk FeSe, we study the electron correlation effects in a multiorbital model for this compound in the nematic phase using the U(1) slave-spin theory. Here, we find that a finite nematic order helps to stabilize an orbital selective Mott phase. Moreover, we propose that when the d- and s-wave bond nematic orders are combined with the ferro-orbital order, there exists a surprisingly large orbital selectivity between the xz and yz orbitals even though the associated band splitting is relatively small. Lastly, our results explain the seemingly unusual observation of strong orbital selectivity in the nematic phase of FeSe, uncover new clues on the nature of the nematic order, and set the stage to elucidate the interplay between superconductivity and nematicity in iron-based superconductors.
- Authors:
-
[2];
- Renmin University of China, Beijing (China)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Rice Univ., Houston, TX (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1489954
- Alternate Identifier(s):
- OSTI ID: 1483919
- Report Number(s):
- LA-UR-18-22338; LA-UR-18-24705
Journal ID: ISSN 0031-9007; PRLTAO
- Grant/Contract Number:
- 89233218CNA000001; SC0018197
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 121; Journal Issue: 22; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Material Science
Citation Formats
Yu, Rong, Zhu, Jian -Xin, and Si, Qimiao. Orbital Selectivity Enhanced by Nematic Order in FeSe. United States: N. p., 2018.
Web. doi:10.1103/PhysRevLett.121.227003.
Yu, Rong, Zhu, Jian -Xin, & Si, Qimiao. Orbital Selectivity Enhanced by Nematic Order in FeSe. United States. https://doi.org/10.1103/PhysRevLett.121.227003
Yu, Rong, Zhu, Jian -Xin, and Si, Qimiao. Thu .
"Orbital Selectivity Enhanced by Nematic Order in FeSe". United States. https://doi.org/10.1103/PhysRevLett.121.227003. https://www.osti.gov/servlets/purl/1489954.
@article{osti_1489954,
title = {Orbital Selectivity Enhanced by Nematic Order in FeSe},
author = {Yu, Rong and Zhu, Jian -Xin and Si, Qimiao},
abstractNote = {Motivated by the recent low-temperature experiments on bulk FeSe, we study the electron correlation effects in a multiorbital model for this compound in the nematic phase using the U(1) slave-spin theory. Here, we find that a finite nematic order helps to stabilize an orbital selective Mott phase. Moreover, we propose that when the d- and s-wave bond nematic orders are combined with the ferro-orbital order, there exists a surprisingly large orbital selectivity between the xz and yz orbitals even though the associated band splitting is relatively small. Lastly, our results explain the seemingly unusual observation of strong orbital selectivity in the nematic phase of FeSe, uncover new clues on the nature of the nematic order, and set the stage to elucidate the interplay between superconductivity and nematicity in iron-based superconductors.},
doi = {10.1103/PhysRevLett.121.227003},
journal = {Physical Review Letters},
number = 22,
volume = 121,
place = {United States},
year = {Thu Nov 29 00:00:00 EST 2018},
month = {Thu Nov 29 00:00:00 EST 2018}
}
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Works referencing / citing this record:
Local orbital degeneracy lifting as a precursor to an orbital-selective Peierls transition
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