Colloquium, 1998
Division of Physics, Grad. Sch. of Sci., Hokkaido Univ.

以下のように物理コロキュウムが予定されています。
皆さん奮って御参加下さい。

URL of this page is <http://phys.sci.hokudai.ac.jp/Colloq/Colloq-1998/Monceau.html>
Colloquium 1997 1998 1999

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Title:
High-spatial resolution X-ray study of the field-induced charge-density-wave deformations in NbSe_3

Lecturer:
Dr. P. Monceau (Grenoble)

日時・場所:
5月25日(月) 15:30 から
大学院講義室 (2-211)にて
( 5/25 (Mon) 15:30- @ Lecture Room (2-211) )

要旨：　
One of the characteristic properties of charge-density-wave (CDW) systems is the non-linear current carried by the sliding CDW under an applied electric field E exceeding a threshold E_T. This non-ohmic current requires phase-slip processes to add (or remove) CDW wave fronts between the pinned CDW at the current contacts and the depinned, sliding CDW between the contacts. Secondly, the phase slip acts to convert the free charge-carriers in the electrodes into (or from) the CDW-condensate. The phase slip process creates dislocation loops near one electrode and destroys them near the other, resulting in a spatial variation of the CDW periodicity along the sample.

連絡先:　松永悟明　(x 5079) <mat@phys.sci.hokudai.ac.jp>

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物理コロキウム世話人:

大西　明 (x 2689) <ohnishi@nucl.sci.hokudai.ac.jp>

網塚　浩 (x 3484) <amiami@phys.sci.hokudai.ac.jp>