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Landau-level spectroscopy of a two-dimensional electron system by tunneling through a quantum dot. 2000
P C Main, and
A S Thornton, and
R J Hill, and
S T Stoddart, and
T Ihn, and
L Eaves, and
K A Benedict, and
M Henini
School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom. Peter.Main@nottingham.ac.uk
A single InAs self-assembled quantum dot is incorporated in the barrier of a tunnel diode and used as a spectroscopic probe of an adjacent two-dimensional electron system from the Fermi energy to the subband edge. We obtain quantitative information about the energy dependence of the quasiparticle lifetime. For magnetic field B, applied parallel to the current, we observe peaks in the current-voltage characteristics I(V) corresponding to the formation of Landau levels. Close to filling factor nu=1 we observe directly the exchange enhancement of the Lande g factor.
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Related Publications
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March 1996,
Physical review. B, Condensed matter,
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R J Hill, and
S T Stoddart, and
T Ihn, and
L Eaves, and
K A Benedict, and
M Henini
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Physical review letters,
P C Main, and
A S Thornton, and
R J Hill, and
S T Stoddart, and
T Ihn, and
L Eaves, and
K A Benedict, and
M Henini
July 1994,
Physical review letters,
P C Main, and
A S Thornton, and
R J Hill, and
S T Stoddart, and
T Ihn, and
L Eaves, and
K A Benedict, and
M Henini
May 1992,
Physical review. B, Condensed matter,
P C Main, and
A S Thornton, and
R J Hill, and
S T Stoddart, and
T Ihn, and
L Eaves, and
K A Benedict, and
M Henini
July 1994,
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