Coulomb-blockade peak-spacing distribution: Interplay of temperature and spin
Publication
, Journal Article
Usaj, G; Baranger, HU
Published in: Physical Review B - Condensed Matter and Materials Physics
2001
We calculate the Coulomb-blockade peak-spacing distribution at finite temperature using the recently introduced "universal Hamiltonian" to describe the e-e interactions. We show that the temperature effect is important even at kBT∼Δ (Δ is the single-particle mean level spacing). This sensitivity arises because: 1) exchange reduces the minimum energy of excitation from the ground state, and 2) the entropic contribution depends on the change of the spin of the quantum dot. Including the leading corrections to the universal Hamiltonian yields results in quantitative agreement with the experiments. Surprisingly, temperature appears to be the most important effect.
Duke Scholars
Published In
Physical Review B - Condensed Matter and Materials Physics
ISSN
0163-1829
Publication Date
2001
Volume
64
Issue
20
Start / End Page
2013191 / 2013194
Citation
APA
Chicago
ICMJE
MLA
NLM
Usaj, G., & Baranger, H. U. (2001). Coulomb-blockade peak-spacing distribution: Interplay of temperature and spin. Physical Review B - Condensed Matter and Materials Physics, 64(20), 2013191–2013194.
Usaj, G., and H. U. Baranger. “Coulomb-blockade peak-spacing distribution: Interplay of temperature and spin.” Physical Review B - Condensed Matter and Materials Physics 64, no. 20 (2001): 2013191–94.
Usaj G, Baranger HU. Coulomb-blockade peak-spacing distribution: Interplay of temperature and spin. Physical Review B - Condensed Matter and Materials Physics. 2001;64(20):2013191–4.
Usaj, G., and H. U. Baranger. “Coulomb-blockade peak-spacing distribution: Interplay of temperature and spin.” Physical Review B - Condensed Matter and Materials Physics, vol. 64, no. 20, 2001, pp. 2013191–94.
Usaj G, Baranger HU. Coulomb-blockade peak-spacing distribution: Interplay of temperature and spin. Physical Review B - Condensed Matter and Materials Physics. 2001;64(20):2013191–2013194.
Published In
Physical Review B - Condensed Matter and Materials Physics
ISSN
0163-1829
Publication Date
2001
Volume
64
Issue
20
Start / End Page
2013191 / 2013194