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Scanning Probe Microscopy: Characterization, Nanofabrication and Device Application of Functional Materials pp 251–273Cite as

Scanning Tunneling Spectroscopy

Local density of states and spin distribution of interacting electron systems

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Part of the book series: NATO Science Series II: Mathematics, Physics and Chemistry ((NAII,volume 186))

Abstract

Scanning tunneling spectroscopy (STS) and its extension, the spin-polarized scanning tunneling spectroscopy (SPSTS), reveal basic information on the spatial distribution of electron systems. STS measures the local density of states given by the sum over squared single-particle wave functions at a chosen energy, while SPSTS detects the spatial distribution of the spin at the same energy. The application of these techniques on electron systems, which are not spatially uniform, is of particular interest. Here, we discuss two examples. First, the paradigmatic electron system located in the quasiparabolic conduction band of InAs is investigated and different types of electron phases are identified depending on the dimension of the system and the applied magnetic field. Second, the spin-polarized technique is used to determine the domain configuration of ferromagnetic particles at different heights.

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Authors and Affiliations

  1. Inst. of Applied Physics, Hamburg University, Jungiusstr. 11, D-20355, Hamburg, Germany

    M. Morgenstern

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  1. M. Morgenstern
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Editors and Affiliations

  1. University of Aveiro, Portugal

    Paula Maria Vilarinho

  2. Tel Aviv University, Ramat - Aviv, Israel

    Yossi Rosenwaks

  3. NCSU, Raleigh, NC, USA

    Angus Kingon

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© 2005 Kluwer Academic Publishers

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Morgenstern, M. (2005). Scanning Tunneling Spectroscopy. In: Vilarinho, P.M., Rosenwaks, Y., Kingon, A. (eds) Scanning Probe Microscopy: Characterization, Nanofabrication and Device Application of Functional Materials. NATO Science Series II: Mathematics, Physics and Chemistry, vol 186. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3019-3_11

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