Details

Autor(en) / Beteiligte

• Zhang, Bingpo
• Cai, Chunfeng
• Zhu, He
• Wu, Feifei
• Ye, Zhenyu
• Chen, Yongyue
• Li, Ruifeng
• Kong, Weiguang
• Wu, Huizhen

Titel

Phonon blocking by two dimensional electron gas in polar CdTe/PbTe heterojunctions

Ist Teil von

• Applied physics letters, 2014-04, Vol.104 (16)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2014

Link zum Volltext

Quelle

American Institute of Physics (AIP) Journals

Beschreibungen/Notizen

• Narrow-gap lead telluride crystal is an important thermoelectric and mid-infrared material in which phonon functionality is a critical issue to be explored. In this Letter, efficient phonon blockage by forming a polar CdTe/PbTe heterojunction is explicitly observed by Raman scattering. The unique phonon screening effect can be interpreted by recent discovery of high-density two dimensional electrons at the polar CdTe/PbTe(111) interface which paves a way for design and fabrication of thermoelectric devices.