Coulomb blockade in triangular lateral small-size quantum dots

Tkachenko, V. A.; Kvon, Z. D.; Tkachenko, O. A.; Baksheev, D. G.; Estibals, O.; Portal, J. C.

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Coulomb blockade in triangular lateral small-size quantum dots

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Portal, J. C.
High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Tkachenko, V. A., Kvon, Z. D., Tkachenko, O. A., Baksheev, D. G., Estibals, O., & Portal, J. C. (2004). Coulomb blockade in triangular lateral small-size quantum dots. Physica E, 21(2-4), 469-473.

Cite as: https://hdl.handle.net/21.11116/0000-000E-FEF0-5

Abstract

An AlGaAs/GaAs lateral quantum dot of triangular shape with a
characteristic size L < 100 nm containing less than ten electrons was
studied. Single-electron oscillations of the conductance G of this dot
were measured at G < e(2)/h. When going from G much less than e(2)/h to
G approximate to 0.5e(2)/h, a decrease was found not only in the
amplitude but also in the period of the oscillations. A calculation of
the 3D-electrostatics demonstrated that this effect is due to a change
in the dot size produced by control voltages. (C) 2003 Elsevier B.V.
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