Resta A Susilo, Chang Il Kwon, Yoonhan Lee, Nilesh P Salke, Chandan De, Junho Seo, Beomtak Kang, Russell J Hemley, Philip Dalladay-Simpson, Zifan Wang, Duck Young Kim, Kyoo Kim, Sang-Wook Cheong, Han Woong Yeom, Kee Hoon Kim, Jun Sung Kim
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 Mn3 Si2 Te6 ...
May 11, 2024: Nature Communications