TY - JOUR
T1 - Correlation effect on ground state energy statistics in disordered quantum dots
AU - Eto, M.
PY - 2000/3
Y1 - 2000/3
N2 - Distribution of peak spacings of the Coulomb oscillation is theoretically investigated in disordered quantum dots. Taking account of the electron-electron interaction by the perturbation, we show that a pair-type (BCS-type) correlation plays an important role in determining the distribution in the diffusive region. The correlation effect can result in a sharp peak structure of the distribution, deviating drastically from the prediction of the random matrix theory, in the absence of a magnetic field. Numerical results support the proposed mechanisms. The pair-type correlation does not work in the presence of a magnetic field.
AB - Distribution of peak spacings of the Coulomb oscillation is theoretically investigated in disordered quantum dots. Taking account of the electron-electron interaction by the perturbation, we show that a pair-type (BCS-type) correlation plays an important role in determining the distribution in the diffusive region. The correlation effect can result in a sharp peak structure of the distribution, deviating drastically from the prediction of the random matrix theory, in the absence of a magnetic field. Numerical results support the proposed mechanisms. The pair-type correlation does not work in the presence of a magnetic field.
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U2 - 10.1002/(SICI)1521-3951(200003)218:1<139::AID-PSSB139>3.0.CO;2-O
DO - 10.1002/(SICI)1521-3951(200003)218:1<139::AID-PSSB139>3.0.CO;2-O
M3 - Article
AN - SCOPUS:0034340620
SN - 0370-1972
VL - 218
SP - 139
EP - 143
JO - Physica Status Solidi (B): Basic Research
JF - Physica Status Solidi (B): Basic Research
IS - 1
ER -