Detailed investigation of the phase transition in K${}_x$P${}_4$W${}_8$O${}_{32}$ and experimental arguments for a charge density wave due to hidden nesting

Abstract

Detailed structural and magnetotransport properties of the monophosphate tungsten bronze K${}_x$P${}_4$W${}_8$O${}_{32}$ single crystals are reported. Both galvanomagnetic and thermal properties are shown to be consistent with a charge density wave electronic transition due to hidden nesting of quasi - 1D portion of the Fermi surface. We also observe the enhancement of electronic anisotropy due to reconstruction of the Fermi surface at the Peierls transition. The resistivity presents a thermal hysteresis suggesting a first order nature characteristics of a strong coupling scenario. However, other measurements such as the change of carriers density demonstrate a second order Peierls scenario with weak coupling features. We suggest that the structural transition driven by the residual strain in the K - P - O environment is responsible for the resistivity hysteresis and modifes the Fermi surface which then helps the rise to the second order Peierls instability.

Accepted to PRB

References in corpus (3)

• Anharmonic suppression of Charge density wave in 2H-NbS${}_2$
• Sliding charge-density-wave in two-dimensional rare-earth tellurides
• Charge Density Wave and Superconducting Properties in Single Crystals of Lu5Ir4Si10

Cited by in corpus (5)

• Magnetism and charge density waves in RNiC${}_2$ (R = Ce, Pr, Nd)
• Extended phase diagram of RNiC2 family: Linear scaling of the Peierls temperature
• Charge density wave and large non-saturating magnetoresistance in YNiC${}_2$ and LuNiC${}_2$
• Field induced suppression of charge density wave in GdNiC${}_2$
• Weak localization competes with the quantum oscillations in a natural electronic superlattice: the case of Na${}_{1.5}$(PO${}_2$)${}_4$(WO${}_3$)${}_{20}$