Pressure-induced B1-to-B2 phase transition in AgSbSe$_2$

ORAL

Abstract

We have investigated the pressure-induced B1-to-B2 phase transitions in AgSbSe$_{2}$. High pressure x-ray diffraction experiments clearly show that the process starts at 20 GPa and completes at 55 GPa. Our density-functional calculations are in good agreement with the experiment and confirm the B1 to B2 transition which is similar to AgSbTe$_{2}$. The possible intermediate structure for B1-to-B2 transition in AgSbSe$_{2}$ occurring at 21-54 GPa is under investigation. Its similarity and difference to AgSbTe$_{2}$ will be discussed in this study.

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Authors

  • Eunja Kim

  • Ravhi Kumar

    HiPSEC and Department of Physics, University of Nevada Las Vegas, Las Vegas, Nevada

  • Andrew Cornelius

    HiPSEC and Dep.Physics, University of Nevada Las Vegas, University of Nevada, Las Vegas

  • Malcolm Nicol

    Department of Physics and High Pressure Science and Engineering Center, University of Nevada, Las Vegas, NV 89154, HiPSEC and Dep.Physics, University of Nevada Las Vegas, Las Vegas, Nevada, High Pressure Science and Engineering Center, Department of Physics, University of Nevada Las Vegas, Las Vegas, NV 89154-4002, USA., HiPSEC, Department of Physics, University of Nevada Las Vegas, Las Vegas NV 89154-4002