Mini volume collapse as evidence for a three-body magnetic polaron in Sm1-xEuxS

Schaller, Daniel; LaBarre, Patrick G.; Besara, Tiglet; Henderson, Alyssa; Wei, Kaya; Bucher, Ernst; Siegrist, Theo; Ramirez, Arthur P.

doi:10.1103/PhysRevMaterials.3.104602

Title: Mini volume collapse as evidence for a three-body magnetic polaron in $S m_{1 - x} E u_{x} S$

Journal Article · 04 October 2019 · Physical Review Materials

DOI: https://doi.org/10.1103/PhysRevMaterials.3.104602 · OSTI ID:1593395

Schaller, Daniel ^[1];

^[1]; Besara, Tiglet ^[2]; Henderson, Alyssa ^[3]; Wei, Kaya ^[3]; Bucher, Ernst ^[4]; Siegrist, Theo ^[5]; Ramirez, Arthur P. ^[1]

Univ. of California, Santa Cruz, CA (United States)
Florida A & M University, Tallahassee, FL (United States); Florida State Univ., Tallahassee, FL (United States). FAMU-FSU College of Engineering; Missouri State Univ., Springfield, MO (United States)
National High Magnetic Field Lab., Tallahassee, FL (United States)
International Solar Energy Research Center Konstanz, Konstanz (Germany)
Florida A & M University, Tallahassee, FL (United States); Florida State Univ., Tallahassee, FL (United States). FAMU-FSU College of Engineering; National High Magnetic Field Lab., Tallahassee, FL (United States)

Samarium sulfide (SmS) is a nonmagnetic narrow-gap (0.06 eV) semiconductor that undergoes a transition to a metallic intermediate valence state at 6.5 kbar. Europium sulfide (EuS) is a ferromagnetic semiconductor with a Curie temperature of 16 K and a gap of 1.6 eV. Here we present a study of the lattice constant, magnetic susceptibility, and resistivity of the substitution series Sm_1-x Eu_x S for 0 < x < 1. We observe a smooth interpolation of magnetic and transport behavior across the series, consistent with a virtual crystal scenario and Vegard’s law. Surprisingly, however, the lattice constant deviates below Vegard’s law in a manner that suggests parametric control of the Sm-Sm distance by the Eu moment in the manner of a magnetic polaron.

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Research Organization:: Univ. of California, Santa Cruz, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division

Grant/Contract Number:: SC0017862

OSTI ID:: 1593395

Report Number(s):: 2; PRMHAR; TRN: US2101451

Journal Information:: Physical Review Materials, Vol. 3, Issue 10; ISSN 2475-9953

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1 work

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References (25)

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36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SmS
magnetization
resistivity
polaron
intermediate valence

Title: Mini volume collapse as evidence for a three-body magnetic polaron in S m 1 - x E u x S

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Title: Mini volume collapse as evidence for a three-body magnetic polaron in $S m_{1 - x} E u_{x} S$