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Detection of exchange interaction in STM measurements through Fano-like interference effects

2007/05/31 by Jonas Fransson, J. Fransson
Engineering · Physics and Astronomy · #Molecular Junctions and Nanostructures #Quantum and electron transport phenomena #Surface and Thin Film Phenomena #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.76.045416

published as Phys. Rev. B, 76, 045416 (2007) · 9 pages, 3 figures, submitted: in addition to the results published in Phys. Rev. B, 75, 153309 (2007), this paper contains a more thorough discussion on the used transport formalism, studies of asymmetric couplings to the substrate, and discussion of non-resonant levels. The non-resonant case is related to spin-dependent tunneling

arxiv created 2007/06/04 · openalex publication_date 2007/07/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

We address Fano-like interference effects [Phys. Rev. 124, 1866 (1961)] in scanning tunneling microscopy measurements of nanoscale systems, e.g., two-level systems. Common to these systems is that second order tunneling contributions give rise to interference effects that cause suppressed transmission through the system for certain energies. The suppressed transmission is measurable either in the differential conductance or in the bias voltage derivative thereof.

Citations