Unconventional density wave in CeCoIn_5?

TL;DR

This paper proposes that the large Nernst and Seebeck effects observed in CeCoIn_5 above its superconducting transition are due to an unconventional density wave, providing a new interpretation of the material's electronic state.

Contribution

It introduces the idea that an unconventional density wave explains the anomalous thermoelectric effects in CeCoIn_5 above the superconducting transition.

Findings

Large Nernst effect attributed to UDW

Seebeck coefficient behavior explained by UDW

Predicted angular dependent magnetoresistance as experimental signature

Abstract

Very recently large Nernst effect and Seebeck effect were observed above the superconducting transition temperature 2.3K in a heavy fermion superconductor CeCoIn_5. We shall interpret this large Nernst effect in terms of unconventional density wave (UDW), which appears around T=18K. Also the temperature dependence of the Seebeck coefficient below T=18K is described in terms of UDW. Another hallmark for UDW is the angular dependent magnetoresistance, which should be readily accessible experimentally.