Imaging the Nanoscale Band Structure of Topological Sb

Preprint English OPEN
Soumyanarayanan, Anjan ; Yee, Michael M. ; He, Yang ; Lin, Hsin ; Gardner, Dillon R. ; Bansil, Arun ; Lee, Young S. ; Hoffman, Jennifer E. (2013)
  • Subject: Condensed Matter - Strongly Correlated Electrons | Condensed Matter - Mesoscale and Nanoscale Physics

Many promising building blocks of future electronic technology - including non-stoichiometric compounds, strongly correlated oxides, and strained or patterned films - are inhomogeneous on the nanometer length scale. Exploiting the inhomogeneity of such materials to design next-generation nanodevices requires a band structure probe with nanoscale spatial resolution. To address this demand, we report the first simultaneous observation and quantitative reconciliation of two candidate probes - Landau level spectroscopy and quasiparticle interference imaging - which we employ here to reconstruct the multi-component surface state band structure of the topological semimetal antimony(Sb). We thus establish the technique of band structure tunneling microscopy (BSTM), whose unique advantages include nanoscale access to non-rigid band structure deformation, empty state dispersion, and magnetic field dependent states. We use BSTM to elucidate the relationship between bulk conductivity and surface state robustness in topological materials, and to quantify essential metrics for spintronics applications.
  • References (49)
    49 references, page 1 of 5

    Singapore 117542.

    z [1] Y. Ando, J. Phys. Soc. Japan 82, 102001 (2013). [2] K. S. Novoselov, D. Jiang, F. Schedin, T. J. Booth, V. V.

    of the National Academy of Sciences 102, 10451 (2005). [3] M. Morgenstern, C. Wittneven, R. Dombrowski, and

    R. Wiesendanger, Physical Review Letters 84, 5588

    (2000). [4] D. L. Miller, K. D. Kubista, G. M. Rutter, M. Ruan, W. A.

    de Heer, P. N. First, and J. A. Stroscio, Science 324, 924

    (2009). [5] T. Hanaguri, K. Igarashi, M. Kawamura, H. Takagi, and

    T. Sasagawa, Physical Review B 82, 081305 (2010). [6] M. F. Crommie, C. P. Lutz, and D. M. Eigler, Nature 363,

    524 (1993). [7] J. E. Hoffman, K. McElroy, D.-H. Lee, K. M. Lang,

    H. Eisaki, S. Uchida, and J. C. Davis, Science 297, 1148

  • Metrics
    No metrics available
Share - Bookmark