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High-temperature concomitant metal-insulator and spin-reorientation transitions in a compressed nodal-line ferrimagnet Mn3Si2Te6

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Title
High-temperature concomitant metal-insulator and spin-reorientation transitions in a compressed nodal-line ferrimagnet Mn3Si2Te6
Author(s)
Susilo, Resta A.; Chang Il Kwon; Lee, Yoonhan; Salke, Nilesh P.; Chandan De; Junho Seo; Beomtak Kang; Hemley, Russell J.; Dalladay-Simpson, Philip; Wang, Zifan; Kim, Duck Young; Kim, Kyoo; Cheong, Sang-Wook; Han Woong Yeom; Kim, Kee Hoon; Jun Sung Kim
Publication Date
2024-05
Journal
Nature Communications, v.15, no.1
Publisher
Nature Publishing Group
Abstract
Symmetry-protected band degeneracy, coupled with a magnetic order, is the key to realizing novel magnetoelectric phenomena in topological magnets. While the spin-polarized nodal states have been identified to introduce extremely-sensitive electronic responses to the magnetic states, their possible role in determining magnetic ground states has remained elusive. Here, taking external pressure as a control knob, we show that a metal-insulator transition, a spin-reorientation transition, and a structural modification occur concomitantly when the nodal-line state crosses the Fermi level in a ferrimagnetic semiconductor Mn3Si2Te6. These unique pressure-driven magnetic and electronic transitions, associated with the dome-shaped T-c variation up to nearly room temperature, originate from the interplay between the spin-orbit coupling of the nodal-line state and magnetic frustration of localized spins. Our findings highlight that the nodal-line states, isolated from other trivial states, can facilitate strongly tunable magnetic properties in topological magnets.
URI
https://pr.ibs.re.kr/handle/8788114/15234
DOI
10.1038/s41467-024-48432-9
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
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