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Title: Spin glass in semiconducting KFe 1.05 Ag 0.88 Te 2 single crystals

Abstract

We report discovery of KFe 1.05 Ag 0.88 Te 2 single crystals with semiconducting spin glass ground state. Composition and structure analyses suggest nearly stoichiometric I 4 / mmm space group but allow for the existence of vacancies, absent in long-range semiconducting antiferromagnet KFe 0.85 Ag 1.15 Te 2 . The subtle change in stoichometry in Fe-Ag sublattice changes magnetic ground state but not conductivity, giving further insight into the semiconducting gap mechanism.

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:
1385879
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 91; Journal Issue: 17; 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

Ryu, Hyejin, Lei, Hechang, Klobes, B., Warren, J. B., Hermann, R. P., and Petrovic, C. Spin glass in semiconducting KFe1.05Ag0.88Te2 single crystals. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.91.174517.
Ryu, Hyejin, Lei, Hechang, Klobes, B., Warren, J. B., Hermann, R. P., & Petrovic, C. Spin glass in semiconducting KFe1.05Ag0.88Te2 single crystals. United States. doi:10.1103/PhysRevB.91.174517.
Ryu, Hyejin, Lei, Hechang, Klobes, B., Warren, J. B., Hermann, R. P., and Petrovic, C. Fri . "Spin glass in semiconducting KFe1.05Ag0.88Te2 single crystals". United States. doi:10.1103/PhysRevB.91.174517.
@article{osti_1385879,
title = {Spin glass in semiconducting KFe1.05Ag0.88Te2 single crystals},
author = {Ryu, Hyejin and Lei, Hechang and Klobes, B. and Warren, J. B. and Hermann, R. P. and Petrovic, C.},
abstractNote = {We report discovery of KFe 1.05 Ag 0.88 Te 2 single crystals with semiconducting spin glass ground state. Composition and structure analyses suggest nearly stoichiometric I 4 / mmm space group but allow for the existence of vacancies, absent in long-range semiconducting antiferromagnet KFe 0.85 Ag 1.15 Te 2 . The subtle change in stoichometry in Fe-Ag sublattice changes magnetic ground state but not conductivity, giving further insight into the semiconducting gap mechanism.},
doi = {10.1103/PhysRevB.91.174517},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 17,
volume = 91,
place = {United States},
year = {2015},
month = {5}
}

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