A Universal Interacting Crossover Regime in Two-Dimensional Quantum Dots

Abstract

Interacting electrons in quantum dots with large Thouless number $g$ in the three classical random matrix symmetry classes are well-understood. When a specific type of spin-orbit coupling known to be dominant in two dimensional semiconductor quantum dots is introduced, we show that a new interacting quantum critical crossover energy scale emerges and low-energy quasiparticles generically have a decay width proportional to their energy. The low-energy physics of this system is an example of a universal interacting crossover regime.

4 pages, 1 figure

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Cited by in corpus (6)

• An Exact Solution for Spin and Charge Correlations in Quantum Dots: The Effect of Level Fluctuations and Zeeman Splitting
• Mesoscopic Stoner instability in open quantum dots: suppression of Coleman-Weinberg mechanism by electron tunneling
• A quantum dot close to Stoner instability: the role of Berry's Phase
• Spin fluctuations in quantum dots
• Statistics of Spin Fluctuations in Quantum Dots with Ising Exchange
• Tunneling density of states in quantum dots with anisotropic exchange