Research Article

Tunable quantum criticality and super-ballistic transport in a “charge” Kondo circuit

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Science  22 Jun 2018:
Vol. 360, Issue 6395, pp. 1315-1320
DOI: 10.1126/science.aan5592

A nanostructure quantum simulator

Phase transitions occurring at absolute zero temperature, or quantum phase transitions (QPTs), can be grouped into broad categories called universality classes. The classification is based on the properties of the transition rather than the microscopic details of the underlying system. Iftikhar et al. exploited this fact to study QPTs in clean, tunable nanostructures, rather than in complex materials, where they most often occur. Within a single nanostructure, two different classes of QPTs with profoundly different characters were studied and comprehensively characterized.

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