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Magnetic order in van der Waals antiferromagnet CrPS4: anisotropic H-T phase diagrams and effects of pressure

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arxiv 2102.11869 v2 pith:QLWCPCWV submitted 2021-02-23 cond-mat.mtrl-sci cond-mat.str-el

Magnetic order in van der Waals antiferromagnet CrPS4: anisotropic H-T phase diagrams and effects of pressure

Sergey L. Bud'ko , Elena Gati , Tyler J. Slade , Paul C. Canfield This is my paper
classification cond-mat.mtrl-sci cond-mat.str-el
keywords kbaranisotropicmagneticphasepressurewereantiferromagnetcrps4
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Single crystalline samples of the van der Waals antiferromagnet CrPS4 were studied by measurements of specific heat and comprehensive anisotropic temperature- and magnetic field-dependent magnetization. In addition, measurements of the heat capacity and magnetization were performed under pressures of up to ~21 kbar and ~14 kbar respectively. At ambient pressure, two magnetic transitions are observed, second order from a paramagnetic to an antiferromagnetic state at TN ~ 37 K, and a first-order spin reorientation transition at T* ~ 34 K. Anisotropic H - T phase diagrams were constructed using the M(T,H) data. As pressure is increased, TN is weakly suppressed with dTN/dP ~ -0.1 K/kbar. T*, on the other hand, is suppressed quite rapidly, with dT*/dP ~ -2 K/kbar, extrapolating to a possible quantum phase transition at Pc ~ 15 kbar.

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