Thermoelectric properties of TmTe under pressure up to 20 GPa |
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| Authors: | N. N. Stepanov V. V. Shchennikov N. V. Morozova V. V. Kaminskii A. V. Golubkov |
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| Affiliation: | 1. Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia
2. Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, ul. Sofii Kovalevskoi 18, Yekaterinburg, 620219, Russia
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| Abstract: | The effect of quasi-hydrostatic pressure up to 20 GPa on thermopower of single-crystal samples of thulium monotelluride and monosulfide was studied. The pressure dependences of the thermopower of thulium monotelluride were found to have features in pressure regions of 2 and 6 GPa, which can be associated with phase transitions to the cation mixed-valence state and tetragonal structure, respectively. The upper pressure boundary of stability of the thulium ion mixed-valence state in monotelluride was evaluated by comparing the pressure dependences of the thermopower of TmTe and TmS. |
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