TY - JOUR
T1 - Mesoscopic fluctuations in the ground state energy of disordered quantum dots
AU - Sivan, S.
AU - Berkovits, R.
AU - Aloni, Y.
AU - Prus, O.
AU - Auerbach, A.
AU - Ben-Yoseph, G.
PY - 1996
Y1 - 1996
N2 - The ground state energy of disordered quantum dots is studied experimentally as a function of dot population. The fluctuations are found to be considerably larger than those predicted by random matrix theory and to display different statistics. Exact diagonalization of the Hamiltonian pertaining to small clusters shows, indeed, that the random matrix statistics holds only for weak Coulomb interactions. As the interaction is made realistic, a crossover to a different statistics, similar to the experimental one, is observed. The statistics crossover is accompanied by appearance of short range spatial correlations in the electron density.
AB - The ground state energy of disordered quantum dots is studied experimentally as a function of dot population. The fluctuations are found to be considerably larger than those predicted by random matrix theory and to display different statistics. Exact diagonalization of the Hamiltonian pertaining to small clusters shows, indeed, that the random matrix statistics holds only for weak Coulomb interactions. As the interaction is made realistic, a crossover to a different statistics, similar to the experimental one, is observed. The statistics crossover is accompanied by appearance of short range spatial correlations in the electron density.
UR - http://www.scopus.com/inward/record.url?scp=4143141365&partnerID=8YFLogxK
U2 - 10.1103/physrevlett.77.1123
DO - 10.1103/physrevlett.77.1123
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
SN - 0031-9007
VL - 77
SP - 1123
EP - 1126
JO - Physical Review Letters
JF - Physical Review Letters
IS - 6
ER -