Magneto-Resistance in the Two-Channel Anderson Lattice

TL;DR

This paper studies the magneto-resistance and optical conductivity in the two-channel Anderson lattice model's paramagnetic phase, revealing lattice coherence effects, scaling behavior, and field-induced Drude peaks.

Contribution

It provides a detailed analysis of magneto-resistance and optical properties in the two-channel Anderson lattice model using the non-crossing approximation.

Findings

Resistivity shows a Kondo upturn with decreasing temperature.

Magneto-resistance follows an approximate scaling relation.

Magnetic field induces a Drude peak in optical conductivity.

Abstract

The paramagnetic phase of the two channel Anderson Lattice model in the Kondo limit is investigated in infinite spatial dimensions using the non-crossing approximation. The resistivity exhibits a Kondo upturn with decreasing $T$, followed by a slow decrease to a finite value at $T=0$. The decrease reflects lattice coherence effects in concert with particle-hole symmetry breaking. The magneto-resistance obeys an approximate scaling relation, decreasing towards coherent Fermi liquid behavior with increasing field. The magnetic field induces a Drude peak in the optical conductivity.