Pressure-Induced Semiconductor-Semimetal Transition in Rb<sub>0.8</sub>Fe<sub>1.6</sub>S<sub>2</sub>
- Baskakov, A.
- Ogarkova, Y.
- Lyubutin, I.
- Starchikov, S.
- Ksenofontov, V.
- Shylin I, S.
- Kroitor, D.
- Tsurkan, V.
- Medvedev, S.
- Naumov, P.
DOIAbstract
The transport and magnetic properties of the Rb0.8Fe1.6S2 crystal have been studied under quasihydrostatic compression to a pressure of 40.5 GPa in diamond anvil cells. A semiconductor-semimetal electronic transition has been detected at a pressure of about 15 GPa. In addition, the disappearance of the magnetic order down to a temperature of 3 K has been found at a pressure of 24 GPa. It has been shown that, in contrast to a similar selenium compound Rb0.8Fe1.6Se2, superconductivity in Rb0.8Fe1.6S2 sulfide does not appear down to the lowest temperatures even at an external pressure of 40.5 GPa
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