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Scaling function provided by J. von Delft, Inst. Theoretische FestkoK rperphysik, Univ. Karlsruhe, Germany.
 

Summary: Scaling function provided by J. von Delft, Inst. Theoretische
FestkoK rperphysik, Univ. Karlsruhe, Germany.
*Corresponding author.
E-mail address: agnolet@physics.tamu.edu (G. Agnolet)
Physica B 284}288 (2000) 1840}1841
Zero bias features in self-assembling tunnel junctions
Glenn Agnolet *, Stephen R. Savitski , Darin T. Zimmerman
Department of Physics, Texas A&M University, College Station, TX 77843-4242, USA
Department of Physics, Penn State Altoona College, Altoona, PA 16601-3760, USA
Abstract
A marked suppression of the conductance near zero bias voltage is a feature common to many electron tunneling
systems and has been attributed to several di!erent mechanisms including Coulomb blockade and non-equilibrium
tunneling. We observe zero bias features (ZBFs) in self-assembling tunnel junctions in which the oxide layer of
a traditional metal}insulator}metal junction is replaced by an atomically-thin gas "lm. We also "nd small conductance
steps superimposed on the otherwise smoothly varying ZBF. Examination of the derivative of the junction conductance
in this region reveals peaks, similar to those observed in point contact spectroscopy, that appear to be correlated with the
phonon density of states in the metal electrodes. 2000 Elsevier Science B.V. All rights reserved.
PACS: 73.40.Gk; 73.40.Rw; 73.20.Hb
Keywords: Electron tunneling spectroscopy; Point contact spectroscopy; Two-channel Kondo scattering; Zero bias features
We have been investigating self-assembling tunnel

  

Source: Agnolet, Glenn - Department of Physics and Astronomy, Texas A&M University

 

Collections: Physics