Dr. rer. nat., University of Tuebingen, Germany (1998)

Associate Professor
Office : S13-02-01  |  Tel : (65) 6516 4140
Email : phyjm@nus.edu.sg

Current Research

  • Electronic systems in low dimensions have been intensively investigated for many years because of the novel physical phenomena emerging when the phase space of electrons is restricted. A famous example is the quantum Hall effect in 2-dim electronic systems. Moreover, the role of electron interactions is enhanced in low dimensional systems resulting in even more surprising effects, for example the appearance of fractional charge.

  • Recently, the discovery of graphene introduced a new and exciting material system which enables us to investigate a truly 2-dim electronic system with relativistic electrons.

  • In my research I will focus on the experimental investigation of electronic properties in graphene and other 2-dimensional systems, employing a combination of electronic transport and unconventional scanning probe techniques. In particular, I am interested in:

    • Novel quantum Hall and topological states in mono- and bilayer graphene
    • Electro-mechanical interaction and artificial gauge fields
    • Local modification of graphene using scanning probe techniques

Selected Publications

  1. Gate-defined quantum confinement in suspended bilayer graphene M.T. Allen, J. Martin, A. Yacoby. Nature Communications 3, 934 (2012)

  2. Local Compressibility Measurements of Correlated States in Suspended Bilayer Graphene J. Martin, B.E. Feldman, R.T. Weitz et al. PRL 105 256806 (2010)

  3. Broken-Symmetry States in Doubly Gated Suspended Bilayer Graphene R.T. Weitz, M.T. Allen, B.E. Feldman et al. Science 330 812-816 (2010)

  4. Self-Aligned Nanoscale SQUID on a Tip A. Finkler, Y. Segev, Y. Myasoedov et al. NANO LETTERS 10, 1046-1049 (2010)

  5. Broken symmetry states and divergent resistance in suspended bilayer graphene B. Feldman, J. Martin, A. Yacoby. Nature Physics 5, 889-893 (2009)

  6. The nature of localization in graphene under quantum Hall conditions J. Martin, N. Akerman, G. Ulbricht, T. Lohmann, J. Smet, K. Klitzing, A. Yacoby. Nature Physics 5, 669-674 article (2009)

  7. Observation of electron-hole puddles in graphene using a scanning single-electron transistor J. Martin, N. Akerman, G. Ulbricht, T. Lohmann, J. Smet, K. v. Klitzing, A. Yacoby. Nature Physics 4, 144-148 article (2008)

  8. Microscopic manifestation of the spin phase transition at filling factor 2/3 B. Verdene, J. Martin, G. Gamez, J. Smet, K.v. Klitzing, D. Mahalu, D. Schuh, G. Abstreiter, A. Yacoby. Nature Physics 3, 392-396 (2007)

  9. Anomalous Conductance Quantization in Carbon Nanotubes M. J. Biercuk, N. Mason, J. Martin, A. Yacoby, C. M. Marcus. PRL 94, 026801 (2005)

  10. Localization of Fractionally Charged Quasi-Particles J. Martin, S. Ilani, B. Verdene, J. Smet, V. Umansky, D. Mahalu, D. Schuh, G. Abstreiter, A. Yacoby. Science 305, 980 (2004)

  11. The microscopic nature of localization in the quantum Hall effect S. Ilani, J. Martin, E. Teitelbaum, J. H. Smet, D. Mahalu, V. Umanski, A. Yacoby. Nature 427, 328 (2004)

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