Abstract
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 Sm1-xEuxS 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.
Department(s)
Physics, Astronomy, and Materials Science
Document Type
Article
DOI
https://doi.org/10.1103/PhysRevMaterials.3.104602
Rights Information
© 2019 American Physical Society
Publication Date
10-4-2019
Recommended Citation
Schaller, Daniel, Patrick G. LaBarre, Tiglet Besara, Alyssa Henderson, Kaya Wei, Ernst Bucher, Theo Siegrist, and Arthur P. Ramirez. "Mini volume collapse as evidence for a three-body magnetic polaron in Sm1− x E uxS." Physical Review Materials 3, no. 10 (2019): 104602.
Journal Title
Physical Review Materials
