کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9594881 1395913 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ultraslow phonon-assisted collapse of tubular image states
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Ultraslow phonon-assisted collapse of tubular image states
چکیده انگلیسی
We predict ultraslow collapse of “tubular image states” (TIS) on material surfaces. TIS are bound Rydberg-like electronic states formed at large distances (∼30 nm) from the surfaces of suspended circularly-symmetric nanowires, such as metallic C nanotubes. The states are formed in potential wells, resulting from a combination of the TIS-electron attraction to image charges in the nanotube and its centrifugal repulsion, caused by spinning around the tube. We demonstrate that TIS can collapse on the tube surface by passing their angular momentum l to circularly polarized flexural phonons excited in the tube. Our analysis shows that for highly detached TIS with l ⩾ 6 the relaxation lifetimes are of the order of 10 ns-1 μs, while for l < 6 these lifetimes are reduced by several orders of magnitude.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 577, Issue 1, 20 February 2005, Pages 86-92
نویسندگان
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