Magnetic-field-induced Luttinger liquid
INFM and Dipartimento di Fisica - L.go E. Fermi 2, 50125, Firenze, Italy
2 Department of Physics, University of Florida P.O. Box 118440, Gainesville, FL 32611-8440, USA
3 University of Minnesota, Theoretical Physics Institute 116 Church Street, SE Minneapolis, MN 55455, USA
Accepted: 24 May 2001
It is shown that a strong magnetic field applied to a bulk metal induces a Luttinger-liquid phase. This phase is characterized by the zero-bias anomaly in tunneling: the tunneling conductance scales as a power law of voltage or temperature. The tunneling exponent increases with the magnetic field as . The zero-bias anomaly is most pronounced for tunneling with the field applied perpendicular to the plane of the tunneling junction.
PACS: 71.10.Pm – Fermions in reduced dimensions (anyons, composite fermions, Luttinger liquid, etc.) / 72.15.Gd – Galvanomagnetic and other magnetotransport effects / 72.15.-v – Electronic conduction in metals and alloys
© EDP Sciences, 2001