We demonstrate that in semiconductor quantum dots wave functions, its imaged by local tunneling spectroscopies like STM, show characteristic signatures of electron-electron Coulomb correlation. We predict that such images correspond to quasi-particle wave functions which cannot be computed by standard mean-field techniques in the strongly correlated regime. From the configuration-interaction solution of the few-particle problem for prototype dots, we find that quasi-particle wave function images may display signatures of Wigner crystallization.
Correlation effects in quantum dot wave function imaging / Rontani, Massimo; Molinari, Elisa. - In: JAPANESE JOURNAL OF APPLIED PHYSICS. PART 1, REGULAR PAPERS & SHORT NOTES. - ISSN 0021-4922. - STAMPA. - 45:3 B(2006), pp. 1966-1969. [10.1143/JJAP.45.1966]
Correlation effects in quantum dot wave function imaging
RONTANI, Massimo;MOLINARI, Elisa
2006-01-01
Abstract
We demonstrate that in semiconductor quantum dots wave functions, its imaged by local tunneling spectroscopies like STM, show characteristic signatures of electron-electron Coulomb correlation. We predict that such images correspond to quasi-particle wave functions which cannot be computed by standard mean-field techniques in the strongly correlated regime. From the configuration-interaction solution of the few-particle problem for prototype dots, we find that quasi-particle wave function images may display signatures of Wigner crystallization.Pubblicazioni consigliate
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