Transport Properties of Two Dimensional Electrons in Magnetic Fields with Sine-Like Modulation.

• Yoshida Junji

  Department of Physics, Sophia University

• Ohtsuki Tomi

  Department of Physics, Sophia University

Abstract

We have studied quantum transports in two dimensional electron gas (2DEG) numerically, where magnetic fields with sine-type modulation are applied perpendicular to the plane of 2DEG. Due to the non-homogeneous magnetic fields, the system becomes chaotic. We use tight-binding model and investigate the energy level statistics and the two terminal conductance. Depending on the spatial symmetry of the magnetic fields, the system belongs to the unitary class or the orthogonal, which is reflected by the energy level statistics. Attaching leads further destroys the symmetry, and the universal conductance fluctuation for the unitary class is observed. The fractal behavior of the magnetoconductance is also observed.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 72 (3), 594-598, 2003

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• ballistic transport
• commensurability effect
• UCF
• level statistics
• fractal

Details

• CRID: 1390282679159398656
• NII Article ID: 210000104680
• NII Article ID: 110001974265
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.72.594
• BIBCODE: 2003JPSJ...72..594Y
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 6479590
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6479590
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.72.594
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed