Odd-even spin effects and variation of g factor in a quasi-one-dimensional subband
Odd-even spin effects and variation of g factor in a quasi-one-dimensional subband
复制标题
DOI：
10.1103/physrevb.79.081301
复制
发表时间：
2009-02-01
影响因子：
3.7
通讯作者：
Ritchie, D. A.
中科院分区：
文献类型：
--
作者：
Chen, T. -M.;Graham, A. C.;Ritchie, D. A.
在电子通过量子线的输运过程中观察到四种奇偶自旋现象。他们一致地暗示，准一维系统倾向于自发自旋极化，少数自旋上电子的能带不愿意填充，从而扩大了自旋能隙。在一个单一的子带内的g因子的变化测量使用直流电导技术，显示出明确的证据的振荡g值作为1D子带填充一个接一个的载流子密度增加。
Four odd-even spin phenomena are observed in electronic transport through a quantum wire. They consistently imply that a quasi-one-dimensional system tends to a spontaneous spin polarization with the energy band of minority spin-up electrons being reluctant to populate, thus widening the spin gap in energy. Variation of g factor within a single subband is measured using a dc conductance technique, showing clear evidence of an oscillatory g value as 1D subbands are filled one by one with increasing carrier density.