کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1808971 1525186 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling of dislocations in a CDW junction: Interference of the CDW and normal carriers
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Modeling of dislocations in a CDW junction: Interference of the CDW and normal carriers
چکیده انگلیسی

We derive and study equations for dissipative transient processes in a constraint incommensurate charge density wave (CDW) with remnant pockets or a thermal population of normal carriers. The attention was paid to give the correct conservation of condensed and normal electrons, which was problematic at presence of moving dislocation cores if working within an intuitive Ginzburg–Landau like model. We performed a numeric modeling for stationary and transient states in a rectangular geometry when the voltage V or the normal current are applied across the conducting chains. We observe creation of an array of electronic vortices, the dislocations, at or close to the junction surface; their number increases stepwise with increasing V. The dislocation core strongly concentrates the normal carriers but the CDW phase distortions almost neutralize the total charge. At other regimes, the lines of the zero CDW amplitude flash across the sample working as phase slips. The studies were inspired by, and can be applied to experiments on mesa-junctions in NbSe3 and TaS3.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 460, 1 March 2015, Pages 16–20
نویسندگان
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