X-ray diffraction study of the transient structure of sliding charge density waves in NbSe$_3$

H. Requardt; D. Rideau; R. Danneau; A. Ayari; F. Ya Nad; J.E. Lorenzo; P. Monceau; R. Currat; C. Detlefs; D. Smilgies; G. Grubel

doi:doi:10.1051/jp4:20020390

Numéro		J. Phys. IV France Volume 12, Numéro 9, November 2002


Page(s)		181 - 182
DOI		https://doi.org/10.1051/jp4:20020390

J. Phys. IV France 12 (2002) Pr9-181
DOI: 10.1051/jp4:20020390

X-ray diffraction study of the transient structure of sliding charge density waves in NbSe ₃

H. Requardt¹, D. Rideau², R. Danneau², A. Ayari³, F. Ya Nad^{3, 4}, J.E. Lorenzo⁵, P. Monceau³, R. Currat², C. Detlefs¹, D. Smilgies¹ and G. Grubel¹

¹ ESRF, BP. 220, 38043 Grenoble cedex, France
² ILL, BP. 156,38042 Grenoble cedex, France
³ CRTBT-CNRS, BP. 166, 38042 Grenoble cedex, France
⁴ Institute for Radioengineering and Electronics, Moscow, Russia
⁵ Laboratoire de Cristallographie, CNRS, BP. 166, 38042 Grenoble cedex, France

Abstract
We present high resolution X-ray diffraction measurements on NbSe ₃ of the charge-density-wave (CDW) relaxation from the deformation created by the sliding of the CDW. The data are taken in the temperature range 75 K < T < 10 ⁵ K in the upper-CDW phase of NbSe, and cover spatial positions up to $8OO~\mu$ m from the current contact. Convenient fits to the data are obtained by a stretched exponential decay profile yielding exponents $\mu$ in the range of 0.4-0.7 and relaxation time-scales $\tau$ of the order of 1-150 ms. becoming faster with increasing sample temperature and slowing down with increasing distance from the current contact.

X-ray diffraction study of the transient structure of sliding charge density waves in NbSe 3

X-ray diffraction study of the transient structure of sliding charge density waves in NbSe ₃