The Remarkable Anisotropic Compressibility and Metallic Cr-Cr Chains in Topological Semimetal CrP4 under High Pressure
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作者
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刊物名称
Phys. Status Solidi B-Basic Solid State Phys.
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年、卷、文献号
2021, , 2000544
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关键词
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摘要
Metal tetraphosphides (MP4, M = 3d transition metals) exhibit the layeredstructure 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 CrP4 single crystal is prepared using the highpressure 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. CrP4 shows remarkable axial anisotropic compressibility, in which the c-axis is more compressible than a-and b-axes. The formation of infinite chains of Cr -Cr metallic bonding in CrP4 under high pressure enhances the electrical conductivity.
