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

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

Abstract

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.

Authors:

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

Publication Date:: Tue May 26 00:00:00 EDT 2015

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

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1226023

Alternate Identifier(s):: OSTI ID: 1182816

Report Number(s):: BNL-108190-2015-JA
Journal ID: ISSN 1098-0121; R&D Project: PM016; KC0201050

Grant/Contract Number:: SC00112704

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review. B, Condensed Matter and Materials Physics

Additional Journal Information:: Journal Volume: 91; Journal Issue: 17; 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

Citation Formats


                    Ryu, H., Lei, H., 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.

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                    Ryu, H., Lei, H., Klobes, B., Warren, J. B., Hermann, R. P., & Petrovic, C. Spin glass in semiconducting KFe1.05Ag0.88Te2 single crystals.  United States.  https://doi.org/10.1103/PhysRevB.91.174517

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                    Ryu, H., Lei, H., Klobes, B., Warren, J. B., Hermann, R. P., and Petrovic, C. Tue .  
"Spin glass in semiconducting KFe1.05Ag0.88Te2 single crystals".  United States.  https://doi.org/10.1103/PhysRevB.91.174517.  https://www.osti.gov/servlets/purl/1226023.

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@article{osti_1226023,

  title        = {Spin glass in semiconducting KFe1.05Ag0.88Te2 single crystals},

  author       = {Ryu, H. and Lei, H. and Klobes, B. and Warren, J. B. and Hermann, R. P. and Petrovic, C.},

  abstractNote = {We report discovery of KFe1.05Ag0.88Te2 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 KFe1.05Ag0.88Te2. The subtle change in stoichometry in Fe/Ag sublattice changes magnetic ground state but not conductivity, giving further insight into the semiconducting gap mechanism.},

  doi          = {10.1103/PhysRevB.91.174517},

  journal      = {Physical Review. B, Condensed Matter and Materials Physics},

  number       = 17,

  volume       = 91,

  place        = {United States},

  year         = {Tue May 26 00:00:00 EDT 2015},

  month        = {Tue May 26 00:00:00 EDT 2015}

}

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

Abstract

Citation Formats

Dynamic measurements in a Heisenberg spin glass: CuMn journal, May 1994

57 Fe and 151 Eu Mössbauer spectroscopy and magnetization studies of Eu(Fe 0.89 Co 0.11 ) 2 As 2 and Eu(Fe 0.9 Ni 0.1 ) 2 As 2 journal, February 2011

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Superconductivity in the PbO-type structure -FeSe journal, September 2008

Fe 57 Mössbauer study of magnetic ordering in superconducting K 0 . 80 Fe 1 . 76 Se 2 . 00 single crystals journal, March 2011

Magnetism and charge dynamics in iron pnictides journal, February 2011

Fe-based superconductivity with T c =31 K bordering an antiferromagnetic insulator in (Tl,K) Fe x Se 2 journal, April 2011

Antiferromagnetism in semiconducting KFe 0.85 Ag 1.15 Te 2 single crystals journal, August 2011

New layered manganese selenide KMnAgSe<SUB>2</SUB>: Structure and properties journal, August 2014

Mössbauer and magnetization studies of A 0.8 Fe 2 − y Se 2 (A = K, Rb and K/Tl) journal, August 2011

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Iron-Based Layered Superconductor La[O 1- x F x ]FeAs ( x = 0.05−0.12) with T c = 26 K journal, March 2008

A Novel Large Moment Antiferromagnetic Order in K 0.8 Fe 1.6 Se 2 Superconductor journal, August 2011

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Superconductivity in the iron selenide K x Fe 2 Se 2 ( 0 ≤ x ≤ 1.0 ) journal, November 2010

Influence of microstructure on superconductivity in KxFe2−ySe2 and evidence for a new parent phase K2Fe7Se8 journal, May 2013

Microstructure and ordering of iron vacancies in the superconductor system K y Fe x Se 2 as seen via transmission electron microscopy journal, April 2011

Coherence-Incoherence Crossover and the Mass-Renormalization Puzzles in Sr 2 RuO 4 journal, March 2011

Synthesis and crystal growth of Cs 0.8 (FeSe 0.98 ) 2 : a new iron-based superconductor with T c = 27 K journal, January 2011

Electronic structure of the iron chalcogenide KFeAgTe 2 revealed by angle-resolved photoemission spectroscopy journal, October 2013

NMR Study in the Iron-Selenide Rb 0.74 Fe 1.6 Se 2 : Determination of the Superconducting Phase as Iron Vacancy-Free Rb 0.3 Fe 2 Se 2 journal, June 2012

Vacancy-induced nanoscale phase separation in K x Fe 2 − y Se 2 single crystals evidenced by Raman scattering and powder x-ray diffraction journal, August 2012

Coherence–incoherence crossover in the normal state of iron oxypnictides and importance of Hund's rule coupling journal, February 2009

Superconductivity at 32 K in single-crystalline Rb x Fe 2 − y Se 2 journal, February 2011

Ab Initio Probing of the Magnetic and Electronic Properties of ThCr2Si2-Like Charge-Balanced KFeAgTe2 journal, November 2011

Tunable ( δ π , δ π )-Type Antiferromagnetic Order in α -Fe(Te,Se) Superconductors journal, June 2009

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

Dynamic measurements in a Heisenberg spin glass: CuMn
journal, May 1994

⁵⁷ Fe and ¹⁵¹ Eu Mössbauer spectroscopy and magnetization studies of Eu(Fe _0.89 Co _0.11 ) ₂ As ₂ and Eu(Fe _0.9 Ni _0.1 ) ₂ As ₂
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journal, December 1996

The effect of spin-glass ordering on the specific heat of Mn
journal, February 1983

Superconductivity in the PbO-type structure -FeSe
journal, September 2008

${}^{57}{Fe}$ Mössbauer study of magnetic ordering in superconducting $K_{0.80} {Fe}_{1.76} {Se}_{2.00}$ single crystals
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Antiferromagnetism in semiconducting KFe $_{0.85}$ Ag $_{1.15}$ Te $_{2}$ single crystals
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New layered manganese selenide KMnAgSe<SUB>2</SUB>: Structure and properties
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journal, November 2014

Magnetic-susceptibility and specific-heat studies of spin-glass-like ordering in the pyrochlore compounds $R_{2}$ ${Mo}_{2}$ $O_{7}$ ( R =Y, Sm, or Gd)
journal, September 1992

Superconductivity at 32 K and anisotropy in Tl _0.58 Rb _0.42 Fe _1.72 Se ₂ crystals
journal, February 2011

Iron-Based Layered Superconductor La[O _1- _x F _x ]FeAs ( x = 0.05−0.12) with T _c = 26 K
journal, March 2008

A Novel Large Moment Antiferromagnetic Order in K _0.8 Fe _1.6 Se ₂ Superconductor
journal, August 2011

Electronic and magnetic phase diagram of β-Fe1.01Se with superconductivity at 36.7 K under pressure
journal, June 2009

CsFexAg2-xTe2 (x = 0.72): The First Quaternary Iron Telluride Synthesized from Molten Salt
journal, April 1995

Spin-glass behavior of semiconducting $K_{x}$ Fe $_{2 - y}$ S $_{2}$
journal, May 2011

Superconductivity at 38 K in the Iron Arsenide $({Ba}_{1 - x} K_{x}) {Fe}_{2} {As}_{2}$
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Superconductivity in the iron selenide $K_{x} {Fe}_{2} {Se}_{2}$ $(0 \leq x \leq 1.0)$
journal, November 2010

Influence of microstructure on superconductivity in KxFe2−ySe2 and evidence for a new parent phase K2Fe7Se8
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Microstructure and ordering of iron vacancies in the superconductor system $K_{y}$ Fe $_{x}$ Se $_{2}$ as seen via transmission electron microscopy
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Vacancy-induced nanoscale phase separation in K $_{x}$ Fe $_{2 - y}$ Se $_{2}$ single crystals evidenced by Raman scattering and powder x-ray diffraction
journal, August 2012

Coherence–incoherence crossover in the normal state of iron oxypnictides and importance of Hund's rule coupling
journal, February 2009

Superconductivity at 32 K in single-crystalline Rb $_{x}$ Fe $_{2 - y}$ Se $_{2}$
journal, February 2011

Ab Initio Probing of the Magnetic and Electronic Properties of ThCr2Si2-Like Charge-Balanced KFeAgTe2
journal, November 2011

Tunable ( $δ π$ , $δ π$ )-Type Antiferromagnetic Order in $α$ -Fe(Te,Se) Superconductors
journal, June 2009

Critical exponents of spin-galss systems
journal, June 1988

Mössbauer studies of Ba(Fe _{1 − x} Ni _x ) ₂ As ₂
journal, August 2010

The superconductivity at 18 K in LiFeAs system
journal, December 2008

Phase separation and magnetic order in K-doped iron selenide superconductor
journal, November 2011

Specific Heat of Insulating Spin-Glasses, (Eu,Sr)S, near the Onset of Ferromagnetism
journal, January 1980