文献详情
Effects of temperature and pressure on the optical and vibrational properties of thermoelectric SnSe
文献类型期刊
作者Efthimiopoulos, Ilias[1];Berg, Matthias[2];Bande, Annika[3];Puskar, Ljiljana[4];Ritter, Eglof[5];Xu, Wei[6];Marcelli, Augusto[7];Ortolani, Michele[8];Harms, Martin[9];Mueller, Jan[10];Speziale, Sergio[11];Koch-Mueller, Monika[12];Liu, Yong[13];Zhao, Li-Dong[14];Schade, Ulrich[15]
机构
通讯作者Efthimiopoulos, I (reprint author), GFZ German Res Ctr Geosci, D-14473 Potsdam, Germany.; Berg, M (reprint author), Helmholtz Zentrum Berlin Mat & Energie, Inst Methods Mat Dev, Albert Einstein Str 15, D-12489 Berlin, Germany.; Xu, W (reprint author), Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China.
2019
期刊名称PHYSICAL CHEMISTRY CHEMICAL PHYSICS影响因子和分区
来源信息年:2019  卷:21  期:17  页码范围:8663-8678  
21
期刊信息PHYSICAL CHEMISTRY CHEMICAL PHYSICS影响因子和分区  ISSN:1463-9076
17
页码范围8663-8678
增刊正刊
摘要We have conducted a comprehensive investigation of the optical and vibrational properties of the binary semiconductor SnSe as a function of temperature and pressure by means of experimental and ab initio probes. Our high-temperature investigations at ambient pressure have successfully reproduced the progressive enhancement of the free carrier concentration upon approaching the Pnma -> Bbmm transition, whereas the pressure-induced Pnma -> Bbmm transformation at ambient temperature, accompanied by an electronic semiconductor -> semi-metal transition, has been identified for bulk SnSe close to 10 GPa. Modeling of the Raman-active vibrations revealed that three-phonon anharmonic processes dominate the temperature-induced mode frequency evolution. In addition, SnSe was found to exhibit a pressure-induced enhancement of the Born effective charge. Such behavior is quite unique and cannot be rationalized within the proposed effective charge trends of binary materials under pressure.
收录情况SCIE(WOS:000474599300003)  
所属部门材料科学与工程学院
DOI10.1039/c9cp00897g
百度学术Effects of temperature and pressure on the optical and vibrational properties of thermoelectric SnSe
语言外文
ISSN1463-9076
人气指数126
浏览次数126
基金German Federal Ministry of Education and Research (BMBF) [05K16KH1]; National Science Foundation of China [U1532128]; LNF under the IHEP; LNF under the INFN
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