Department of Physics, Normal University of Hangzhou, Hangzhou 310036, People's Republic of China.
J Phys Condens Matter. 2011 Mar 16;23(10):105602. doi: 10.1088/0953-8984/23/10/105602. Epub 2011 Feb 18.
A spin-1/2 Anderson impurity in a semiconductor quantum well with Rashba and Dresselhaus spin-orbit couplings is studied by using a variational wavefunction method. The local magnetic moment is found to be quenched at low temperatures. The spin-spin correlations of the impurity and the conduction electron density show anisotropy in both spatial and spin spaces, which interpolates the Kondo spin screenings of a conventional metal and of a surface of three-dimensional topological insulators.
采用变分波函数方法研究了半导体量子阱中具有拉什巴和 Dresselhaus 自旋轨道耦合的自旋 1/2Anderson 杂质。发现局域磁矩在低温下被猝灭。杂质和传导电子密度的自旋-自旋关联在空间和自旋空间都表现出各向异性，这介于传统金属和三维拓扑绝缘体表面的 Kondo 自旋屏蔽之间。
