排序方式: 共有92条查询结果,搜索用时 328 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Shkolnikov YP Misra S Bishop NC De Poortere EP Shayegan M 《Physical review letters》2005,95(6):066809
We report measurements of the interaction-induced quantum Hall effect in a spin-polarized AlAs two-dimensional electron system where the electrons occupy two in-plane conduction band valleys. Via the application of in-plane strain, we tune the energies of these valleys and measure the energy gap of the quantum Hall state at filling factor nu = 1. The gap has a finite value even at zero strain and, with strain, rises much faster than expected from a single-particle picture, suggesting that the lowest energy charged excitations at nu = 1 are "valley Skyrmions." 相似文献