X-ray-scattering study of the charge-density-wave structure inNbSe3in high magnetic fields

Abstract

An upper bound of $\ensuremath{\Delta}q/ql~2.5\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$ on the magnetic-field-induced shift of the wave vector of the low-temperature charge-density wave in ${\mathrm{NbSe}}_{3}$ is established by high-resolution x-ray diffraction in magnetic fields up to 10 T. The charge-density-wave order parameter is also magnetic-field independent, to within 10%. These limits are discussed in the context of magnetotransport experiments on ${\mathrm{NbSe}}_{3}$ as well as theoretical models that had predicted a magnetic-field dependence of the charge-density-wave structure.