Even-odd correlations in capacitance fluctuations of quantum dots
- 15 November 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 54 (20) , R14289-R14292
- https://doi.org/10.1103/physrevb.54.r14289
Abstract
We investigate effects of short-range interactions on the addition spectra of quantum dots using a disordered Hubbard model. A correlation function S(q) is defined on the inverse compressibility versus filling data, and computed numerically for small lattices. Two regimes of interaction strength are identified: the even/odd fluctuations regime typical of Fermi-liquid ground states, and a regime of structureless S(q) at strong interactions. We propose to understand the latter regime in terms of magnetically correlated localized spins. © 1996 The American Physical Society.Keywords
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This publication has 9 references indexed in Scilit:
- Mesoscopic Fluctuations in the Ground State Energy of Disordered Quantum DotsPhysical Review Letters, 1996
- Activation energy in the early stage of electromigration in Al-1% Si/TiN/Ti bamboo linesSemiconductor Science and Technology, 1995
- Effects of Potential Fluctuations in Quantum Dot on Coulomb OscillationJournal of the Physics Society Japan, 1995
- Single electron charging effects in high-resistance In2O#x2212;x#x2212;x#x2212;x wiresJournal of Low Temperature Physics, 1994
- Estimation of electronic confinement in a quantum dot from envelope modulation of Coulomb blockade oscillationsApplied Physics Letters, 1994
- Modulation of Coulomb Blockade Oscillations by Coherent Resonant TunnellingEurophysics Letters, 1994
- N-electron ground state energies of a quantum dot in magnetic fieldPhysical Review Letters, 1993
- Universal velocity correlations in disordered and chaotic systemsPhysical Review Letters, 1993
- Chaos and fluctuations in quantum dotsPhysica B: Condensed Matter, 1993