Raman signatures of classical and quantum phases in coupled dots: A theoretical prediction

Abstract

We study electron molecules in realistic vertically coupled quantum dots in a strong magnetic field. Computing the energy spectrum, pair correlation functions, and dynamical form factor as a function of inter-dot coupling via diagonalization of the many-body Hamiltonian, we identify structural transitions between different phases, some of which do not have a classical counterpart. The calculated Raman cross section shows how such phases can be experimentally singled out.

9 pages, 2 postscript figures, 1 colour postscript figure, Latex 2e, Europhysics Letters style and epsfig macros. Submitted to Europhysics Letters

References in corpus (3)

• Wigner Crystallization in mesoscopic 2D electron systems
• Dissociation of vertical semiconductor diatomic artificial molecules
• Quantum phases in artificial molecules

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