Year: 2020
Type: article
Abstract: The lacunar spinel family, which contains multiferroic skyrmion hosts GaV4S${}_{8}$ and GaV${}_{4}$Se${}_{8}$, is characterized by unique metal--metal bonding leading to strong coupling between crystal structure and magnetism. Synchrotron diffraction analysis of the low temperature crystal structure of GaMo${}_{4}$Se${}_{8}$, a less studied member of the family, reveals coexistence of the reported rhombohedral crystal structure and a new metastable orthorhombic structure. Computational and experimental characterization of the magnetic phase diagram of GaMo${}_{4}$Se${}_{8}$ indicates that slight crystal structure differences lead to distinct magnetic properties; the reported $R3m$ phase hosts skyrmions similar to GaV${}_{4}$Se${}_{8}$, while the novel $I\phantom{\rule{0}{0ex}}m\phantom{\rule{0}{0ex}}m2$ phase is a strongly uniaxial ferromagnet.
Source: Physical Review Materials
Authors: Emily C. Schueller, Daniil A. Kitchaev, Julia L. Zuo, Joshua D. Bocarsly, Joya A. Cooley, Anton Van der Ven, Stephen D. Wilson, Ram Seshadri
Institution: University of California, Santa Barbara
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, U.S. Department of Energy, U.S. Department of Commerce, National Institute of Standards and Technology, Office of Science, University of California, Santa Barbara, Materials Research Science and Engineering Center, Harvard University, Division of Materials Research, Basic Energy Sciences, Argonne National Laboratory
Awards: G102163711, G107546177, G1110399006, G1157010347, G1286236842, G1286251239, G1313983767, G1664757510, G1863003419, G2045646697, G2287611682, G2618837358, G262962599, G2638771445, G2758699378, G2760720504, G30714459, G3075337988, G325663671, G3349485200, G3448829509, G3589692066, G3897098518, G3967535168, G4127361915, G419881185, G4228342300, G4250104368, G426311843, G42916606, G4361631179, G445623813, G4498220863, G4501827968, G4537516005, G4796240486, DMREF: Collaborative Research: Structure Genome of Metal-Insulator Transitions, G493656753, G498139845, G513797252, G5387317844, G650090426, G6512159266, G6652958823, Materials Research Science and Engineering Center at UCSB, G6918803902, G7437795455, G7556421529, G7583137537, G8230913862, MRI: Acquisition of a High Performance Central Computing Facility at University of California Santa Barbara, G8927650245, G993149817
OpenAlex ID: W3025569853