Finite-Size Effects in Tunneling between Parallel Quantum Wires

Yaroslav Tserkovnyak, Bertrand I. Halperin, Ophir M. Auslaender, and Amir Yacoby
Phys. Rev. Lett. 89, 136805 – Published 9 September 2002

Abstract

We present theoretical calculations and experimental measurements which reveal finite-size effects in the tunneling between two parallel quantum wires, fabricated at the cleaved edge of a GaAs/AlGaAs bilayer heterostructure. Observed oscillations in the differential conductance, as a function of bias voltage and applied magnetic field, provide direct information on the shape of the confining potential. Superimposed modulations indicate the existence of two distinct excitation velocities, as expected from spin-charge separation.

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  • Received 8 April 2002

DOI:https://doi.org/10.1103/PhysRevLett.89.136805

©2002 American Physical Society

Authors & Affiliations

Yaroslav Tserkovnyak1, Bertrand I. Halperin1, Ophir M. Auslaender2, and Amir Yacoby2

  • 1Lyman Laboratory of Physics, Harvard University, Cambridge, Massachusetts 02138
  • 2Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 76100, Israel

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Issue

Vol. 89, Iss. 13 — 23 September 2002

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