%0 Journal Article
%T Property comparison of polarons in zinc-blende and wurtzite GaN/AlN quantum wells<br>Property comparison of polarons in zinc-blende and wurtziteGaN/AlN quantum wells
%A Zhu Jun
%A Ban Shiliang
%A Ha Sihua
%A <br>朱俊
%A 班士良
%A 哈斯花
%J 半导体学报
%D 2011
%I 
%X The properties of polarons in zinc-blende and wurtzite GaN/AlN quantum wells with Fr hlich interaction Hamiltonians are compared in detail. The energy shifts of polarons at ground state due to the interface (IF), confined (CO) and half-space phonon modes are calculated by a finite-difference computation combined with a modified LLP variational method. It is found that the two Fr hlich interaction Hamiltonians are consistent with each other when the anisotropic effect from the z-direction and the x-y plane is neglected. The influence of the anisotropy on the polaron energy shifts due to the IF phonon modes for a smaller well width or due to the CO phonon modes for a moderate well width is obvious. In addition, the built-in electric field has a remarkable effect on the polaron energy shifts contributed by the various phonon modes.
%K polaron
%K quantum well
%K anisotropic effect<br>极化子
%K 量子阱
%K 各向异性效应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=025C8057C4D37C4BA0041DC7DE7C758F&aid=A0C0AC355ED3D774D9FFE69BC98EC584&yid=9377ED8094509821&vid=9971A5E270697F23&iid=708DD6B15D2464E8&sid=462F88B6FD7B2CA5&eid=94C357A881DFC066&journal_id=1674-4926&journal_name=半导体学报&referenced_num=0&reference_num=21