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Title: Spectral weight transfer in strongly correlated Fe 1.03 Te

Abstract

The temperature dependence of the in-plane optical conductivity has been determined for Fe 1.03 Te above and below the magnetic and structural transition at T N ≃ 68 K. The electron and hole pockets are treated as two separate electronic subsystems: a strong, broad Drude response that is largely temperature independent, and a much weaker, narrow Drude response with a strong temperature dependence. Spectral weight is transferred from high to low frequency below T N , resulting in the dramatic increase of both the low-frequency conductivity and the related plasma frequency. The change in the plasma frequency is due to an increase in the carrier concentration resulting from the closing of the pseudogap on the electron pocket, as well as the likely decrease of the effective mass in the antiferromagnetic state.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1385616
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 90; Journal Issue: 12; Related Information: CES partners with Brookhaven National Laboratory (BNL); Argonne National Laboratory; University of Illinois, Urbana-Champaign; Los Alamos National Laboratory; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; phonons, thermal conductivity, energy storage (including batteries and capacitors), superconductivity, defects, spin dynamics

Citation Formats

Dai, Y. M., Akrap, A., Schneeloch, J., Zhong, R. D., Liu, T. S., Gu, G. D., Li, Q., and Homes, C. C. Spectral weight transfer in strongly correlated Fe1.03Te. United States: N. p., 2014. Web. doi:10.1103/PhysRevB.90.121114.
Dai, Y. M., Akrap, A., Schneeloch, J., Zhong, R. D., Liu, T. S., Gu, G. D., Li, Q., & Homes, C. C. Spectral weight transfer in strongly correlated Fe1.03Te. United States. doi:10.1103/PhysRevB.90.121114.
Dai, Y. M., Akrap, A., Schneeloch, J., Zhong, R. D., Liu, T. S., Gu, G. D., Li, Q., and Homes, C. C. Mon . "Spectral weight transfer in strongly correlated Fe1.03Te". United States. doi:10.1103/PhysRevB.90.121114.
@article{osti_1385616,
title = {Spectral weight transfer in strongly correlated Fe1.03Te},
author = {Dai, Y. M. and Akrap, A. and Schneeloch, J. and Zhong, R. D. and Liu, T. S. and Gu, G. D. and Li, Q. and Homes, C. C.},
abstractNote = {The temperature dependence of the in-plane optical conductivity has been determined for Fe 1.03 Te above and below the magnetic and structural transition at T N ≃ 68 K. The electron and hole pockets are treated as two separate electronic subsystems: a strong, broad Drude response that is largely temperature independent, and a much weaker, narrow Drude response with a strong temperature dependence. Spectral weight is transferred from high to low frequency below T N , resulting in the dramatic increase of both the low-frequency conductivity and the related plasma frequency. The change in the plasma frequency is due to an increase in the carrier concentration resulting from the closing of the pseudogap on the electron pocket, as well as the likely decrease of the effective mass in the antiferromagnetic state.},
doi = {10.1103/PhysRevB.90.121114},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 12,
volume = 90,
place = {United States},
year = {2014},
month = {9}
}

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