{"title":"Pb1-XGeXTe的磁等离子体反射率","authors":"J. Burkhart, G. Bauer, W. Jantsch, A. Lopez‐Otero","doi":"10.1109/ICSWA.1979.9335446","DOIUrl":null,"url":null,"abstract":"Pb<inf>1-X</inf>Ge<inf>X</inf>Te exhibits a structural phase transition from the cubic NaCl(O<inf>h</inf>) to the rhombohedral As-like structure (C<inf>3v</inf>) at low lattice temperatures [1]. The transition temperature T<inf>C</inf> is a steep function of the Ge content. The infrared active mode of the cubic structure is split into an A<inf>1</inf>-mode and a double degenerate E-mode. These modes are both infrared and Raman active. A<inf>1</inf> is observable for the polarization <sup>→</sup>E‖ c-axis [2,3]. In the cubic phase, electrons or holes are located in four equivalent L-valleys. Below T<inf>C</inf>, there are three equivalent L-valleys, and along the direction of the c-axis a T-valley.","PeriodicalId":216123,"journal":{"name":"1979 International Conference on Submillimeter Waves and Their Applications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Magnetoplasma-Reflectivity of Pb1-XGeXTe\",\"authors\":\"J. Burkhart, G. Bauer, W. Jantsch, A. Lopez‐Otero\",\"doi\":\"10.1109/ICSWA.1979.9335446\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Pb<inf>1-X</inf>Ge<inf>X</inf>Te exhibits a structural phase transition from the cubic NaCl(O<inf>h</inf>) to the rhombohedral As-like structure (C<inf>3v</inf>) at low lattice temperatures [1]. The transition temperature T<inf>C</inf> is a steep function of the Ge content. The infrared active mode of the cubic structure is split into an A<inf>1</inf>-mode and a double degenerate E-mode. These modes are both infrared and Raman active. A<inf>1</inf> is observable for the polarization <sup>→</sup>E‖ c-axis [2,3]. In the cubic phase, electrons or holes are located in four equivalent L-valleys. Below T<inf>C</inf>, there are three equivalent L-valleys, and along the direction of the c-axis a T-valley.\",\"PeriodicalId\":216123,\"journal\":{\"name\":\"1979 International Conference on Submillimeter Waves and Their Applications\",\"volume\":\"15 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1979-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1979 International Conference on Submillimeter Waves and Their Applications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICSWA.1979.9335446\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1979 International Conference on Submillimeter Waves and Their Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICSWA.1979.9335446","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Pb1-XGeXTe exhibits a structural phase transition from the cubic NaCl(Oh) to the rhombohedral As-like structure (C3v) at low lattice temperatures [1]. The transition temperature TC is a steep function of the Ge content. The infrared active mode of the cubic structure is split into an A1-mode and a double degenerate E-mode. These modes are both infrared and Raman active. A1 is observable for the polarization →E‖ c-axis [2,3]. In the cubic phase, electrons or holes are located in four equivalent L-valleys. Below TC, there are three equivalent L-valleys, and along the direction of the c-axis a T-valley.
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