Special Funds for Theoretical Physics of National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11247030]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11274105, 91227125]; National Basic Research Program of ChinaNational Basic Research Program of China [2011CB606405]; Hunan Provincial Natural Science Foundation of ChinaNatural Science Foundation of Hunan Province [14JJ4054]; Youth Foundation of Hunan Provincial Education Department of China [12B136]; Specialized Research Fund for the Doctoral Program of Higher Education of ChinaSpecialized Research Fund for the Doctoral Program of Higher Education (SRFDP) [20130161130004]
机构署名：
本校为第一且通讯机构
院系归属：
理学院
摘要：
We study the ballistic phonon transport and thermal conductance of six low-lying vibration modes in quantum wire modulated with quantum dot at low temperatures. A comparative analysis is made among the six vibrational modes. The results show that the transmission rates of the six vibrational modes relative to reduced frequency display periodic or quasi-periodic oscillatory behavior. Among the four acoustic modes, the thermal conductance contributed by the torsional mode is the smallest, and the thermal conductances of other acoustic modes have adjacent values. It is also found that the thermal...
