Phase transitions in quantum dots
نویسندگان
چکیده
منابع مشابه
Phase transitions in quantum dots.
We perform Hartree-Fock calculations to show that quantum dots ~i.e., two-dimensional systems of up to twenty interacting electrons in an external parabolic potential! undergo a gradual transition to a spin-polarized Wigner crystal with increasing magnetic-field strength. The phase diagram and ground-state energies have been determined. We tried to improve the ground state of the Wigner crystal...
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Using a fermionic renormalization group approach, we analyze a model where the electrons diffusing on a quantum dot interact via Fermi-liquid interactions. Describing the single-particle states by random matrix theory, we find that interactions can induce phase transitions (or crossovers for finite systems) to regimes where fluctuations and collective effects dominate at low energies. Implicati...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1996
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.54.14532