%0 Journal Article
%T Acoustic phonon transport and thermal conductance in quantum waveguide with abrupt quantum junctions modulated with double T-shapedquantum structure<br>含双T形量子结构的量子波导中声学声子输运和热导
%A Peng Xiao-Fang
%A Chen Li-Qun
%A Luo Yong-Feng
%A Liu Lin-Hong
%A Wang Kai-Jun
%A <br>彭小芳
%A 陈丽群
%A 罗勇锋
%A 刘凌虹
%A 王凯军
%J 物理学报
%D 2013
%I 
%X By using the scattering matrix method, the transmission coefficient and thermal conductance of acoustic phonon through a quantum waveguide with abrupt quantum junctions modulated with double T-shaped quantum structure at low temperatures are studied. The results show that at very low temperatures, the double T-shaped quantum structure can enhance low-temperature thermal conductance; contrarily, at higher temperatures, the double T-shaped quantum structure can reduce low-temperature thermal conductance. However, in the whole low-temperature region, the low-temperature thermal conductance can be enhanced by adding the narrowest width c in the scattering region. Moreover, it is found that both the transmission coefficient and thermal conductance can be adjusted by changing the structural parameters of the the scattering region.
%K acoustic phonons transport
%K thermal conductance
%K quantum structure<br>声学声子输运
%K 热导
%K 量子结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=164B94149555464304D32974B90A7DD5&yid=FF7AA908D58E97FA&iid=94C357A881DFC066&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0