陕西师范大学学报:自然科学版
陝西師範大學學報:自然科學版
협서사범대학학보:자연과학판
Journal of Shaanxi Normal University: Nat Sci Ed
2012年
3期
27-32
,共6页
赵琳瑶%张婷%刘锦锋%任立庆%郭建中%李永放
趙琳瑤%張婷%劉錦鋒%任立慶%郭建中%李永放
조림요%장정%류금봉%임립경%곽건중%리영방
声子晶体%Zener隧道效应%声波隧穿效应
聲子晶體%Zener隧道效應%聲波隧穿效應
성자정체%Zener수도효응%성파수천효응
acoustic-phonon superlattices%Zener tunneling effect%acoustic wave tunneling effect
应用转移矩阵方法,研究了由两个全同声子晶体构成的可调谐声学谐振腔中声波的共振遂穿效应,其遂穿过程类似于量子力学中的Zener共振遂穿效应.通过改变声波谐振腔的长度,研究了声子晶体的带隙中声波遂穿的动力学过程.结果表明:不同带隙具有不同的遂穿特征,遂穿频率随着谐振腔的增加呈周期性振荡变化的规律.
應用轉移矩陣方法,研究瞭由兩箇全同聲子晶體構成的可調諧聲學諧振腔中聲波的共振遂穿效應,其遂穿過程類似于量子力學中的Zener共振遂穿效應.通過改變聲波諧振腔的長度,研究瞭聲子晶體的帶隙中聲波遂穿的動力學過程.結果錶明:不同帶隙具有不同的遂穿特徵,遂穿頻率隨著諧振腔的增加呈週期性振盪變化的規律.
응용전이구진방법,연구료유량개전동성자정체구성적가조해성학해진강중성파적공진수천효응,기수천과정유사우양자역학중적Zener공진수천효응.통과개변성파해진강적장도,연구료성자정체적대극중성파수천적동역학과정.결과표명:불동대극구유불동적수천특정,수천빈솔수착해진강적증가정주기성진탕변화적규률.
Based on the transfer-matrix method, the resonant tunneling effect of the acoustic wave in a tunable acoustic-phonon cavity made of two identical aeoustic-phonon superlattices, which are similarly to the Zener tunneling effect of the quantum mechanics is studied theoretically. The acoustic wave tunneling kinetics process in the frequency gaps of the phonons superlattices is investigated by altering the length of the acoustic wave resonant-cavity. For the different frequency gaps, the tunneling characteristics are of difference, and the tunneling frequencies of the acoustic wave presents periodicity with the increase of the resonant-cavity.