浙江师范大学学报（自然科学版）
浙江師範大學學報（自然科學版）
절강사범대학학보（자연과학판）
Journal of Zhejiang Normal University(Natural Sciences)
2015年
4期
387-391
,共5页
马志斌%祁飞%刘焕%陈庆虎
馬誌斌%祁飛%劉煥%陳慶虎
마지빈%기비%류환%진경호
Josephson结阵列%钉扎%超导涡旋%棘轮效应
Josephson結陣列%釘扎%超導渦鏇%棘輪效應
Josephson결진렬%정찰%초도와선%극륜효응
Josephson junction arrays%pinning%vortex%Ratchet effect
对2种非对称钉扎势的二维约瑟夫森结阵列在交流驱动下的涡旋-反涡旋的定向运动进行了研究,发现整流电压显著地依赖于涡旋密度和交变电流的幅值,表现出非单调行为.基于模拟的涡旋结构、涡旋反涡旋对的出现,很好地解释了所获得直流电压与交变电流振幅的特征关系.
對2種非對稱釘扎勢的二維約瑟伕森結陣列在交流驅動下的渦鏇-反渦鏇的定嚮運動進行瞭研究,髮現整流電壓顯著地依賴于渦鏇密度和交變電流的幅值,錶現齣非單調行為.基于模擬的渦鏇結構、渦鏇反渦鏇對的齣現,很好地解釋瞭所穫得直流電壓與交變電流振幅的特徵關繫.
대2충비대칭정찰세적이유약슬부삼결진렬재교류구동하적와선-반와선적정향운동진행료연구,발현정류전압현저지의뢰우와선밀도화교변전류적폭치,표현출비단조행위.기우모의적와선결구、와선반와선대적출현,흔호지해석료소획득직류전압여교변전류진폭적특정관계.
The directed motion of vortices and antivortices driven by AC currents in the two-dimensional Jo-sephson junction arrays with two kinds of asymmetric pinning potential were studied numerically.It was found that the rectifying voltage showed non-monotonic behavior and strongly depended on the vortex density and the amplitude of the AC currents.Based on the simulated vortex structures and appearance of vortex-antivortex pairs, the observed characteristics of DC voltage and the amplitude of the AC currents were explained in de-tail.
