Quantum Saturation of Capacitance for surface analysis
ORAL
Abstract
The electronic capacitance in between two electrodes saturate to the quantum capacitance when their separation distance is decreased [T. Christen and M Buttiker. Phys. Rev. Lett. 77,1 (1996)].
Using a Scanning Tunneling Microscope at low temperatures we study the variations of the capacitance as a function of the interelectrode distance. Quantum capacitance reveals variations in the Local Density of States for different metals and surface preparations.
Using a Scanning Tunneling Microscope at low temperatures we study the variations of the capacitance as a function of the interelectrode distance. Quantum capacitance reveals variations in the Local Density of States for different metals and surface preparations.
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Presenters
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Carlos Untiedt
Univ de Alicante
Authors
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Carlos Untiedt
Univ de Alicante
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Tamara de Ara García
Departamento de Física Aplicada, Unidad asociada al CSIC, Universidad de Alicante, Campus de San Vicente del Raspeig, Alicante, Spain, Universidad de Alicante
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Bernat Olivera
Universidad de Alicante
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Carlos Sabater
Univ de Alicante, Departamento de Física Aplicada and Unidad Asociada CSIC, Universidad de Alicante, Campus de San Vicente del Raspeig, E-03690 Alicante, Spain