Model of Quantum Criticality in He3 bilayers Adsorbed on graphite

Details Model of Quantum Criticality in He3 bilayers Adsorbed on graphite Model of Quantum Criticality in He3 bilayers Adsorbed on graphite

2007-09-04

arxiv.org/abs/0709.0354v2

Phys. Rev. Lett. 100, 176401 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures, new version as published on PRL, journal reference and DOI added

Scientific paper

10.1103/PhysRevLett.100.176401

Recent experiments on He3 bilayers adsorbed on Graphite have shown striking quantum critical properties at the point where the first layer localizes. We model this system with the Anderson lattice plus inter-layer Coulomb repulsion in two dimensions. Assuming that quantum critical fluctuations come from a vanishing of the effective hybridization, we can reproduce several features of the system, including the apparent occurrence of two quantum critical points (QCP), the variation of the effective mass and coherence temperature with coverage.

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