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arXiv · 0706.3406

A Universal Interacting Crossover Regime in Two-Dimensional Quantum Dots

Ganpathy Murthy
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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.

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Ganpathy Murthy. 2007-06-22. A Universal Interacting Crossover Regime in Two-Dimensional Quantum Dots. https://doi.org/10.1103/physrevb.77.073309

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