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  Green's function calculation of Ballistic Electron Emission Microscopy currents (BEEM v2.1)

Reuter, K., de Andresa, P. L., Garcia-Vidal, F. J., Sestovic, D., Flores, F., & Heinz, K. (2000). Green's function calculation of Ballistic Electron Emission Microscopy currents (BEEM v2.1). Computer Physics Communications, 127(2-3), 327-342. doi:10.1016/S0010-4655(99)00502-0.

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 Creators:
Reuter, Karsten1, 2, Author           
de Andresa, P. L., Author
Garcia-Vidal, F. J., Author
Sestovic, D., Author
Flores, F., Author
Heinz, K., Author
Affiliations:
1Universidad Autónoma de Madrid, Spain, ou_persistent22              
2Lehrstuhl für Festkörperphysik, Universität Erlangen-Nürnberg, ou_persistent22              

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 Abstract: We describe the FORTRAN-90 program BEEM v2.1 for the computation of real and reciprocal space currents in Ballistic Electron Emission Microscopy (BEEM), and Spectroscopy (BEES). Based on a LCAO Hamiltonian, the equilibrium one-particle Green's functions of a semi-infinite crystal are obtained using a decimation technique. By means of Keldysh's formalism, the STM tip is coupled to this crystal, and expressions for BEEM currents in real and reciprocal space are obtained. Finally, a Dyson-like equation and a self-consistent charge neutrality condition are applied to incorporate reconstructed or relaxed layers in the surface region. Running demos for Au and CoSi2 are provided.

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Language(s): eng - English
 Dates: 1999-02-241999-10-252000-06-082000-05-10
 Publication Status: Issued
 Pages: 16
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/S0010-4655(99)00502-0
 Degree: -

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Title: Computer Physics Communications
  Abbreviation : Comput. Phys. Commun.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier B.V.
Pages: 16 Volume / Issue: 127 (2-3) Sequence Number: - Start / End Page: 327 - 342 Identifier: ISSN: 0010-4655
CoNE: https://pure.mpg.de/cone/journals/resource/954925392326