Vortex Crystals with Chiral Stripes in Itinerant Magnets

Ozawa, Ryo; Hayami, Satoru; Barros, Kipton Marcos; Chern, Gia-Wei; Motome, Yukitoshi; Batista, Cristian Daniel

doi:10.7566/JPSJ.85.103703

Vortex Crystals with Chiral Stripes in Itinerant Magnets

Journal Article · Sat Oct 15 00:00:00 EDT 2016 · Journal of the Physical Society of Japan

DOI:https://doi.org/10.7566/JPSJ.85.103703· OSTI ID:1485386

Ozawa, Ryo ^[1]; Hayami, Satoru ^[2]; ^[3]; Chern, Gia-Wei ^[4]; Motome, Yukitoshi ^[1]; Batista, Cristian Daniel ^[5]

Univ. of Tokyo (Japan). Dept. of Applied Physics
Hokkaido Univ., Sapporo (Japan). Dept. of Physics
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of Virginia, Charlottesville, VA (United States). Dept. of Physics
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division and Shull-Wollan Center

Here, we study noncoplanar magnetic ordering in frustrated itinerant magnets. For a family of Kondo square lattice models with classical local moments, we find that a double-Q noncoplanar vortex crystal has lower energy than the single-Q helical order expected from the Ruderman–Kittel–Kasuya–Yosida interaction when the lattice symmetry dictates four global maxima in the bare magnetic susceptibility. By expanding in the small Kondo exchange and the degree of noncoplanarity, we demonstrate that this noncoplanar state arises from a Fermi surface instability occurring in independent sections connected by two ordering wave vectors.

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1485386

Alternate ID(s):: OSTI ID: 22605532

Report Number(s):: LA-UR--15-27951

Journal Information:: Journal of the Physical Society of Japan, Journal Name: Journal of the Physical Society of Japan Journal Issue: 10 Vol. 85; ISSN 0031-9015

Publisher:: Physical Society of JapanCopyright Statement

Country of Publication:: United States

Language:: English

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