...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review >Comprehensive surface magnetotransport study of SmB_6
【24h】

Comprehensive surface magnetotransport study of SmB_6

机译：SMB_6的综合磁场磁通量研究

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

After the theoretical prediction that SmB_6 is a topological Kondo insulator, there has been an explosion of studies on the SmB_6, surface. However, there is not yet an agreement on even the most basic quantities such as the surface carrier density and mobility. In this paper, we carefully revisit Corbino disk magnetotransport studies to find those surface transport parameters. We first show that subsurface cracks exist in the SmB_6, crystals, arising both from surface preparation and during the crystal growth. We provide evidence that these hidden subsurface cracks are additional conduction channels, and the large disagreement between earlier surface SmB_6, studies may originate from previous interpretations not taking this extra conduction path into account. We provide an update of more reliable magnetotransport data than the previous one (S. Wolgast et al., Phys. Rev. B 92. 115110) and find that the orders-of-magnitude large disagreements in carrier density and mobility come from the surface preparation and the transport geometry rather than the intrinsic sample quality. From this magnetotransport study, we find an updated estimate of the carrier density and mobility of 2.71 ×10~(13) (1/cm~2) and 104.5 (cm~2/V sec), respectively. We compare our results with other studies of the SmB_6 surface. By this comparison, we provide insight into the disagreements and agreements of the previously reported angle-resolved pholoemission spectroscopy, scanning tunneling microscopy, and magnetotorque quantum oscillations measurements.
机译：在SMB_6是拓扑kondo绝缘体的理论预测之后，对SMB_6，表面的研究爆炸。然而，甚至甚至是诸如表面载体密度和移动性的最基本的达成协议。在本文中，我们仔细重新审视了Corbino Diss MagnetOcroport研究，以找到那些表面传输参数。我们首先表明SMB_6，晶体中存在地下裂缝，从表面制备和晶体生长期间产生。我们提供了证据表明这些隐藏的地下裂缝是额外的传导渠道，以及早期的表面SMB_6之间的大量分歧，研究可能来自以前的解释，而不是考虑这种额外的传导路径。我们提供比上一个更可靠的MagnetRansport数据更新，而不是前一个（S.Wolgast等，Phys。Rev. B 92. 115110）并发现载流子密度和移动性的数量级大量分歧来自表面制备和运输几何形状而不是内在样品质量。从该磁传输研究中，我们发现载流子密度和迁移率的更新估计分别为2.71×10〜（13）（1 / cm〜2）和104.5（cm〜2 / v秒）。我们将结果与SMB_6表面的其他研究进行比较。通过这种比较，我们提供了对先前报告的角度解析的Pholoemisive光谱，扫描隧道显微镜和磁电荷量子振荡测量的分歧和协议的洞察。

著录项

  • 来源
    《Physical review》 |2020年第15期|155109.1-155109.15|共15页
  • 作者

    Y. S. Eo; S. Wolgast; A. Rakoski; D. Mihaliov; B. Y. Rang; M. S. Song; B. K. Cho; M. Ciomaga Hatncan; G. Balakrishnan; Z. Fisk; S. R. Saha; X. Wang; J. Paglione; C. Kurdak;

  • 作者单位

    Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Maryland Quantum Materials Center and Department of Physics University of Maryland College Park Maryland 20742 USA;

    Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA;

    Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA;

    Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA;

    School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea;

    School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea;

    School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea;

    Department of Physics University of Warwick Coventry CV4 7AL United Kingdom;

    Department of Physics University of Warwick Coventry CV4 7AL United Kingdom;

    Department of Physics and Astronomy University of California at Irvine Irvine California 92697 USA;

    Maryland Quantum Materials Center and Department of Physics University of Maryland College Park Maryland 20742 USA;

    Maryland Quantum Materials Center and Department of Physics University of Maryland College Park Maryland 20742 USA;

    Maryland Quantum Materials Center and Department of Physics University of Maryland College Park Maryland 20742 USA Canadian Institute for Advanced Research Toronto Ontario M5G 1Z8 Canada;

    Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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