Charge ordering in stoichiometric FeTe: Scanning tunneling microscopy and spectroscopy
Abstract
In this study, we use scanning tunneling microscopy and spectroscopy to reveal a unique stripy charge order in a parent phase of iron-based superconductors in stoichiometric FeTe epitaxy films. The charge order has unusually the same—usually half—period as the spin order. We also found highly anisotropic electron band dispersions being large and little along the ferromagnetic (crystallographic b) and antiferromagnetic (a) directions, respectively. Our data suggest that the microscopic mechanism is likely of the Stoner type driven by interatomic Coulomb repulsion Vij, and that Vij and charge fluctuations, so far much neglected, are important to the understanding of iron-based superconductors.
- Authors:
-
- Tsinghua Univ., Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1240698
- Alternate Identifier(s):
- OSTI ID: 1234140
- Report Number(s):
- BNL-111847-2016-JA
Journal ID: ISSN 2469-9950; PRBMDO; R&D Project: PO015; KC0202030
- Grant/Contract Number:
- SC00112704; AC02-98CH10886
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 93; Journal Issue: 4; 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
Li, Wei, Yin, Wei -Guo, Wang, Lili, He, Ke, Ma, Xucun, Xue, Qi -Kun, and Chen, Xi. Charge ordering in stoichiometric FeTe: Scanning tunneling microscopy and spectroscopy. United States: N. p., 2016.
Web. doi:10.1103/PhysRevB.93.041101.
Li, Wei, Yin, Wei -Guo, Wang, Lili, He, Ke, Ma, Xucun, Xue, Qi -Kun, & Chen, Xi. Charge ordering in stoichiometric FeTe: Scanning tunneling microscopy and spectroscopy. United States. https://doi.org/10.1103/PhysRevB.93.041101
Li, Wei, Yin, Wei -Guo, Wang, Lili, He, Ke, Ma, Xucun, Xue, Qi -Kun, and Chen, Xi. Mon .
"Charge ordering in stoichiometric FeTe: Scanning tunneling microscopy and spectroscopy". United States. https://doi.org/10.1103/PhysRevB.93.041101. https://www.osti.gov/servlets/purl/1240698.
@article{osti_1240698,
title = {Charge ordering in stoichiometric FeTe: Scanning tunneling microscopy and spectroscopy},
author = {Li, Wei and Yin, Wei -Guo and Wang, Lili and He, Ke and Ma, Xucun and Xue, Qi -Kun and Chen, Xi},
abstractNote = {In this study, we use scanning tunneling microscopy and spectroscopy to reveal a unique stripy charge order in a parent phase of iron-based superconductors in stoichiometric FeTe epitaxy films. The charge order has unusually the same—usually half—period as the spin order. We also found highly anisotropic electron band dispersions being large and little along the ferromagnetic (crystallographic b) and antiferromagnetic (a) directions, respectively. Our data suggest that the microscopic mechanism is likely of the Stoner type driven by interatomic Coulomb repulsion Vij, and that Vij and charge fluctuations, so far much neglected, are important to the understanding of iron-based superconductors.},
doi = {10.1103/PhysRevB.93.041101},
journal = {Physical Review B},
number = 4,
volume = 93,
place = {United States},
year = {Mon Jan 04 00:00:00 EST 2016},
month = {Mon Jan 04 00:00:00 EST 2016}
}
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