Towards a dual-tip STM application in mesoscopic electron transport

Rami Dana, Irina Kiruschev, Phong Dinh Tran, Pascal Doppelt, Yishay Manassen

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A new design for a dual-tip scanning tunneling microscope (STM) is presented. The design is a variation on the mechanically controllable break-junction with two electron beam-induced deposition nano-tips. The new design enables one to scan surfaces simultaneously with two probes having a nano-gap separation. By collecting the lateral current flowing between the tips, the transconductance map can then be compared with the STM images for local characterizations of the electron transport. Since the lateral beam carries the property of the density of states of the surface at momentum space, the dispersion of the electronic structure should give an orientation and position dependence of the local transconductance current. In addition, the reduced terminal separation, on the order of the characteristic mesoscopic length scales, is likely to be sensitive to a variety of typically observed interactions and interference effects.

Original languageEnglish
Pages (from-to)87-97
Number of pages11
JournalIsrael Journal of Chemistry
Volume48
Issue number2
DOIs
StatePublished - 1 Dec 2008

ASJC Scopus subject areas

  • Chemistry (all)

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