Activation Study of the PseudospinSoliton in theν=1 Bilayer Quantum Hall Effect
Activation Study of the PseudospinSoliton in theν=1 Bilayer Quantum Hall Effect
复制标题
ν=1双层量子霍尔效应中赝自旋孤子的激活研究
DOI：
10.1088/1742-6596/150/2/022012
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Z. F. Ezawa and A. Sawada
中科院分区：
文献类型：
--
作者：
A. Fukuda;D. Terasawa;M. Morino;K. Iwata;S. Kozumi;T. Sekikawa;Y. Ogasawara;T. Arai;N. Kumada;Y. Hirayama;Z. F. Ezawa and A. Sawada
我们研究了总Landau能级填充因子v=1时双层量子霍尔态中赝旋孤子相的热激发。在双层量子霍尔态的公度-非公度相变点附近，我们发现了反常的磁输运现象，如磁电阻峰及其各向异性输运，这归因于赝旋孤子相的形成(A.Fukuda等，Phys.)。莱特牧师。100,016801(2008年))。在这项工作中，我们详细地测量了双层v=1qH态的激活能隙Δ。Δ在伪自旋孤子相的公度位相和非公度位相之间显示出一个宽广的最小值。我们认为，Δ中的最小值是由于形成晶格的伪自旋孤子的集体模所致。
We study thermal excitations of the pseudospin soliton phase in the bilayer quantum Hall (QH) state at total Landau level filling factor v= 1. Near the commensurate-incommensurate phase transition point in the bilayer v= 1 QH state, we have found anomalous magnetotransport phenomena, such as the magnetoresistance peak and its anisotropic transport, which are ascribed to the formation of the pseudospin soliton phase (A. Fukuda et al., Phys. Rev. Lett. 100, 016801 (2008)). In this work, we elaborately measured activation energy gap Δ of the bilayer v= 1 QH state. Δ shows a broad minimum in the pseudospin soliton phase between the commensurate and incommensurate phase. We suggest that the minimum in Δ is due to collective modes of the pseudospin solitons forming a lattice.