Transverse correlations and plasticity in the CDW conductor NbSe3 studied by X-ray microbeam diffraction

ISAKOVIC, A. F ; EVANS, P. G ; et al.

In: International workshop on electronic crystals ECRYS-2005Journal de physique. IV 131:139-142

Konferenz - print, 8 ref

In whisker-like samples of the quasi-1D conductor NbSe3, the presence of longitudinal steps causes shearing of the CDW, and leads to a loss of transverse correlations. We use a microdiffraction setup with a spatial resolution of 300 nm and an angular sensitivity of 5 mdeg to image the resulting CDW contrast between thick and thin portions of the sample. Microdiffraction in the b* - c* plane shows that depinning on the thick, weakly pinned side is accompanied by the loss of diffraction intensity, demonstrating a loss of correlations in qualitative agreement with previous X-ray diffraction topography measurements1, but with an order-of-magnitude improvement in spatial resolution. Microdiffraction images in the a* - b* plane reveal a sharp increase in the full width at half maximum in an approximately 1 micron thick region near the step edge and a rotation of the CDW wavevector that varies with applied field. We use the extremal value of the CDW wavevector rotation to estimate the shear modulus of this electronic crystal.

Titel:	Transverse correlations and plasticity in the CDW conductor NbSe3 studied by X-ray microbeam diffraction
Autor/in / Beteiligte Person:	ISAKOVIC, A. F ; EVANS, P. G ; CAI, Z ; LAI, B ; KMETKO, J ; CICAK, K ; THORNE, R. E
Link:	View record from PASCAL Archive
Quelle:	International workshop on electronic crystals ECRYS-2005Journal de physique. IV 131:139-142
Veröffentlichung:	Les Ulis: EDP sciences, 2005
Medientyp:	Konferenz
Umfang:	print, 8 ref
ISSN:	1155-4339 (print)
Schlagwort:	Physics Physique Sciences exactes et technologie Exact sciences and technology Etat condense: structure, proprietes mecaniques et thermiques Condensed matter: structure, mechanical and thermal properties Propriétés mécaniques et acoustiques de l'état condensé Mechanical and acoustical properties of condensed matter Propriétés mécaniques des solides Mechanical properties of solids Déformation et plasticité (incluant limite élastique, ductilité et superplasticité) Deformation and plasticity (including yield, ductility, and superplasticity) Etat condense: structure electronique, proprietes electriques, magnetiques et optiques Condensed matter: electronic structure, electrical, magnetic, and optical properties Etats électroniques Electron states Phénomènes collectifs Collective effects Systèmes à ondes de densité de charge Charge-density-wave systems Cisaillage Shearing Cizalladura Composé minéral Inorganic compounds Diffraction RX XRD Module cisaillement Shear modulus Métal transition composé Transition element compounds Niobium séléniure Niobium selenides Onde densité charge Charge density waves Plasticité Plasticity Résolution spatiale Spatial resolution Topographie RX X-ray topography Trichite Whiskers 6220F 7145L NbSe3
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Conference Paper File Description: text Language: English Author Affiliations: LASSP, Cornell University, Ithaca, NY, United States ; Mat. Sci. and Engineering Dept., University of Wisconsin-Madison, United States ; Argonne National Lab, Argonne, IL, United States Rights: Copyright 2006 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Physics of condensed state: electronic structure, electrical, magnetic and optical properties ; Physics of condensed state: structure, mechanical and thermal properties

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