...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nano letters >Determining Interaction Enhanced Valley Susceptibility in Spin-Valley-Locked MoS2
【24h】

Determining Interaction Enhanced Valley Susceptibility in Spin-Valley-Locked MoS2

机译：在旋转谷锁定MOS2中确定相互作用增强谷易感性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Two-dimensional transition metal dichalcogenides (TMDCs) are recently emerged electronic systems with various novel properties, such as spin-valley locking, circular dichroism, valley Hall effect, and superconductivity. The reduced dimensionality and large effective masses further produce unconventional many-body interaction effects. Here we reveal strong interaction effects in the conduction band of MoS2 by transport experiment. We study the massive Dirac electron Landau levels (LL) in high-quality MoS2 samples with field-effect mobilities of 24 000 cm(2)/(V.s) at 1.2 K. We identify the valley-resolved LLs and low-lying polarized LLs using the Lifshitz-Kosevitch formula. By further tracing the LL crossings in the Landau fan diagram, we unambiguously determine the density-dependent valley susceptibility and the interaction enhanced g-factor from 12.7 to 23.6. Near integer ratios of Zeeman-to-cyclotron energies, we discover LL anticrossings due to the formation of quantum Hall Ising ferromagnets, the valley polarizations of which appear to be reversible by tuning the density or an in-plane magnetic field. Our results provide evidence for many-body interaction effects in the conduction band of MoS2 and establish a fertile ground for exploring strongly correlated phenomena of massive Dirac electrons.
机译：二维过渡金属二硫属化物（TMDCs）是最近出现的电子系统具有各种新颖特性，如旋谷锁定，圆二色性，谷霍尔效应，和超导性。该降维和大有效质量进一步产生非常规的多体相互作用的影响。在这里，我们揭示由运输实验二硫化钼的导带强相互作用影响。我们在1.2 K.研究了大量的狄拉克电子朗道等级（LL）的高质量的MoS 2样品中的具有24000厘米（2）/（VS）的场效应迁移率我们确定了谷分辨LLS和低洼偏振LLS使用利弗席兹-Kosevitch式。通过在兰道风扇图进一步追查LL道口，我们明确地确定密度依赖性谷易感性和的相互作用增强的g因子从12.7至23.6。塞曼到回旋加速器的能量的邻近整数比，我们发现LL反交叉由于量子霍尔伊辛铁磁体的形成，谷极化这似乎是通过调节密度或面内磁场可逆的。我们的研究结果在二硫化钼的导带多体联动效应提供了证据，并建立了肥沃的土壤探索大规模狄拉克电子密切相关的现象。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号