Activation study of collective excitations of the soliton-lattice phasein theν=1 double-layer quantum Hallstate
Activation study of collective excitations of the soliton-lattice phasein theν=1 double-layer quantum Hallstate
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ν=1双层量子霍尔态孤子晶格相集体激发的激活研究
DOI：
10.1103/physrevb.81.073303
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
and A. Sawada
中科院分区：
文献类型：
--
作者：
D. Terasawa1;S. Kozumi;A. Fukuda;M. Morino;K. Iwata;N. Kumada;Y. Hirayama;Z. F. Ezawa;and A. Sawada
通过详细测量双层量子霍尔（QH）态中赝自旋孤子晶格的激活能隙，研究了量子霍尔（QH）态中赝自旋孤子晶格在朗道能级填充因子下的热激发.在倾斜磁场中，双层QH态的激活能隙在公度态和非公度态之间的相变点附近出现最小值。从与理论的激活能隙的面内场的依赖性的比较，我们认为，激活能隙中的最小值是由于孤子晶格的集体模式。
We investigate thermal excitations of the pseudospin soliton lattice in the double-layer quantum Hall (QH) state at total Landau-level filling factorby detailed measurements of the activation energy gap, where the pseudospin represents the layer degree of freedom. In a tilted magnetic field, the activation energy gap of the double-layerQH state shows a minimum near the phase transition point between the commensurate and incommensurate states. From a comparison of the in-plane field dependence of the activation energy gap with theories, we suggest that the minimum in the activation energy gap is due to collective modes of the soliton lattice.