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The Remarkable Anisotropic Compressibility and Metallic CrCr Chains in Topological Semimetal CrP 4 under High Pressure
Author(s) -
Li Chunyu,
Liu Xiaolei,
Yu Zhenhai,
Wu Wei,
Zhang Lili,
Zhou Chunyin,
Zhao Jinggeng,
Guo Yanfeng,
Luo Jianlin
Publication year - 2021
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202000544
Subject(s) - anisotropy , diamond anvil cell , electrical resistivity and conductivity , materials science , compressibility , semimetal , metal , diffraction , synchrotron , diamond , lithium (medication) , atom (system on chip) , high pressure , crystallography , crystal structure , condensed matter physics , thermodynamics , chemistry , composite material , metallurgy , physics , optics , silicon , medicine , quantum mechanics , computer science , embedded system , endocrinology
Metal tetraphosphides (MP 4 , M = 3d transition metals) exhibit the layered‐structure character, in which the metal atom chains are sandwiched between the P 4 2− layers, and have attracted considerable interest due to the outstanding physical and chemical properties, such as good electrical conductivity and high lithium capacity. Herein, the CrP 4 single crystal is prepared using the high‐pressure and high‐temperature method via the 2000 ton Kawai‐type multianvil apparatus at ShanghaiTech University (SHTech‐2000). The structural modification under high pressure is investigated by synchrotron X‐ray diffraction combined with diamond anvil cell techniques. CrP 4 shows remarkable axial anisotropic compressibility, in which the c ‐axis is more compressible than a ‐ and b ‐axes. The formation of infinite chains of CrCr metallic bonding in CrP 4 under high pressure enhances the electrical conductivity.