Physics

Drastic enhancement of magnetic critical temperature and amorphization in topological magnet EuSn₂P₂ under pressure

W. Bi, T. Culverhouse, et al.

This groundbreaking research explores how high pressure transforms EuSn₂P₂, shifting it from a rhombohedral crystal structure to an amorphous state at 36 GPa while enhancing the magnetic ordering temperature fourfold. The study reveals intriguing insights about Eu ion's intermediate valence state and delves into the strengthened Eu-Sn interactions, conducted by an expert team of authors.

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Abstract

This work presents a high-pressure study of the crystal structure and magnetic ground state of EuSn₂P₂ up to 62 GPa. Pressure drives EuSn₂P₂ from a rhombohedral crystal to an amorphous phase at 36 GPa, accompanied by a fourfold enhancement of magnetic ordering temperature. In the amorphous phase, Eu ions exhibit an intermediate valence state. The enhanced magnetic ordering temperature is attributed to stronger Eu-Sn interaction at high pressure.

Publisher

npj Quantum Materials

Published On

Authors

Wenli Bi, Trenton Culverhouse, Zachary Nix, Weiwei Xie, Hung-Ju Tien, Tay-Rong Chang, Utpal Dutta, Jiyong Zhao, Barbara Lavina, Esen E. Alp, Dongzhou Zhang, Jingui Xu, Yuming Xiao, Yogesh K. Vohra

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