Mechanisms Causing Ballistic Thermal Rectification

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2014,（4）
• 页码范围: 118-121
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/31/4/046601

摘要

The mechanism causing the ballistic thermal rectification in the harmonic system is analytically studied.Using the conceptual model of a dephasing probe,we obtain that phase breaking is unnecessary to realize the ballistic thermal rectification.However,it can change the strength of rectification.Asymmetric phonon-phonon interaction inducing the energy exchange of the normal mode of vibration is necessary to realize the ballistic thermal rectification.Moreover,the quantum statistics of phonons in at least one thermal reservoir is crucial to guarantee the asymmetric phonon-phonon interaction.