Hall resistivity in unconventional spin density wave in (TMTSF)2PF6 below T=4.2K

TL;DR

This paper demonstrates that the unconventional spin density wave model explains the Hall resistivity behavior in (TMTSF)2PF6 below 4.2K, clarifying the nature of the low-temperature phase transition.

Contribution

It provides a consistent theoretical description of Hall resistivity in (TMTSF)2PF6 using the USDW model, addressing the controversial low-temperature phase.

Findings

USDW model accurately describes Hall resistivity data

Supports the unconventional SDW nature of the low-temperature phase

Clarifies the phase transition at T* around 4K

Abstract

It is well documented that SDW in (TMTSF)2PF6 undergoes another phase transition at T*\approx 4K, though the nature of the new low temperature phase is controversial. We have shown recently that the new phase is well described in terms of unconventional SDW (USDW) which modifies the quasiparticle spectrum dramatically. In this paper we show that the same model describes consistently the Hall resistivity observed in (TMTSF)2PF6.