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Title: Noncollinear magnetic ordering in a frustrated magnet : metallic regime and the role of frustration
Authors: Shahzad, Munir
Sengupta, Pinaki
Keywords: Magnetic Phase Transitions
Topological Phases of Matter
Issue Date: 2017
Source: Shahzad, M., & Sengupta, P. (2017). Noncollinear magnetic ordering in a frustrated magnet: Metallic regime and the role of frustration. Physical Review B, 96(22), 224402-.
Series/Report no.: Physical Review B
Abstract: We explore the magnetic phases in a Kondo lattice model on the geometrically frustrated Shastry-Sutherland lattice at metallic electron densities, searching for noncollinear and noncoplanar spin textures. Motivated by experimental observations in many rare-earth-based frustrated metallic magnets, we treat the local moments as classical spins and set the coupling between the itinerant electrons and local moments as the largest energy scale in the problem. Our results show that a noncollinear flux state is stabilized over an extended range of Hamiltonian parameters. These spin states can be quenched efficiently by external fields like temperature and magnetic field as well as by varying the degree of frustration in the electronic itinerancy and exchange coupling between local moments. Interestingly, unlike insulating electron densities that we discussed in paper I of this sequence, a Dzyaloshinskii-Moriya interaction between the local moments is not essential for the emergence of their noncollinear ordering.
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.96.224402
Rights: © 2017 American Physical Society (APS). This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society (APS). The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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