Emergence of Quantum Critical Behavior in Metallic Quantum-Well States of Strongly Correlated Oxides.

ABSTRACT: Controlling quantum critical phenomena in strongly correlated electron systems, which emerge in the neighborhood of a quantum phase transition, is a major challenge in modern condensed matter physics. Quantum critical phenomena are generated from the delicate balance between long-range order and its quantum fluctuation. So far, the nature of quantum phase transitions has been investigated by changing a limited number of external parameters such as pressure and magnetic field. We propose a new approach for investigating quantum criticality by changing the strength of quantum fluctuation that is controlled by the dimensional crossover in metallic quantum well (QW) structures of strongly correlated oxides. With reducing layer thickness to the critical thickness of metal-insulator transition,

SUBMITTER: Kobayashi M 

PROVIDER: S-EPMC5709408 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature