Spin glass in semiconducting KFe1.05Ag0.88Te2 single crystals

Ryu, H.; Lei, H.; Klobes, B.; Warren, J. B.; Hermann, R. P.; Petrovic, C.

doi:10.1103/PhysRevB.91.174517

Spin glass in semiconducting KFe_1.05Ag_0.88Te₂ single crystals

Journal Article · Tue May 26 00:00:00 EDT 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.91.174517· OSTI ID:1226023

Ryu, H. ^[1]; Lei, H. ^[2]; Klobes, B. ^[3]; Warren, J. B. ^[2]; Hermann, R. P. ^[4]; Petrovic, C. ^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Julich Research Centre (Germany). Julich Centre for Neutron Science (JCNS)
Julich Research Centre (Germany). Julich Centre for Neutron Science (JCNS); Univ. of Liege, (Belgium). Faculty of Sciences

We report discovery of KFe_1.05Ag_0.88Te₂ single crystals with semiconducting spin glass ground state. Composition and structure analysis suggest nearly stoichiometric I4/mmm space group but allow for the existence of vacancies, absent in long range semiconducting antiferromagnet KFe_1.05Ag_0.88Te₂. The subtle change in stoichometry in Fe/Ag sublattice changes magnetic ground state but not conductivity, giving further insight into the semiconducting gap mechanism.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI ID:: 1226023

Alternate ID(s):: OSTI ID: 1210846
OSTI ID: 1182816
OSTI ID: 1385879

Report Number(s):: BNL--108190-2015-JA; KC0201050

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 17 Vol. 91; ISSN 1098-0121

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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