Magnetic-field induced luttinger liquid

It is show 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 B ln B. The zero-bias anomaly is most pronounced for tunneling with the field applied perpendicular to the plane of the tunneling junction.