Year: 2024
Type: article
Abstract: We study the Kondo lattice model of multipolar magnetic moments interacting with conduction electrons on a triangular lattice. Bond-dependent electron hoppings induce a compasslike anisotropy in the effective Ruderman-Kittel-Kasuya-Yosida interaction between multipolar moments. This unique anisotropy stabilizes multipolar skyrmion crystals at zero magnetic field. In a unit cell, the skyrmion fractionalizes into meron composites subject to the conservation of total topological charge. Diverse multipolar phases in the phase diagram give rise to novel spontaneous Hall response of conduction electrons.
Source: Physical Review Letters
Authors: Hao Zhang, Shi-Zeng Lin
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, U.S. Department of Energy, Center for Integrated Nanotechnologies, Office of Science, National Nuclear Security Administration, Kavli Institute for Theoretical Physics, University of California, Santa Barbara, Laboratory Directed Research and Development, Los Alamos National Laboratory
OpenAlex ID: W4404124633