查看完整版本: 纳米结构的物理基础：Quantum size effects in metallic nanostructures

纳米结构的物理基础：Quantum size effects in metallic nanostructures

[size=5][b][align=center]Quantum Size Effects in Metallic Nanostructures[/align][/b][/size]'_~:CF1H8B P:RE2s


~e-EI ^W8S@y     Michael C. Tringides
|.U*A*I%x)i#m:e     Iowa State University, Ames 6|DNs7cv/jP

+p3Lg&AF{nr     Mieczyslaw Jalochowski b.I}2~gW&S)l
    Maria Curie-Sklodowska University, Lublin, Poland
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:X!Qz qA(Tqi t     Ernst Bauer o%B#r7z kEo
    Arizona State University, Tempe #UX*WkcR

.|%zr ib8P)H3tL In solid-state physics, crystals are usually assumed to be large enough that the influence of finite dimensions on their electronic structure is negligible compared to the effects of the periodic potential produced by the regular arrangement of the ion cores. The energy of a nearly free valence-band electron in a metal can then simply be described by its dependence on the wave vector k = (27pi/lambda)e, where e is a unit vector in the direction of propagation of the electron and lambda is its wavelength.C2x0b"D!Uy[

G6W9b'r%mMP%` sQ doi:10.1063/1.2731973   [i][b]Physics Today[/b][/i]，[b]60[/b]（2007）50-546X3XGQ'}%P K9}
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[b]In solid-state physics,[/b] crystals are usually assumed to be large enough that the influence of finite dimensions on their electronic structure is negligible compared to the effects of the periodic potential produced by the regular arrangement of the ion cores. The energy of a nearly free valence-band electron in a metal can then simply be described by its dependence on the wave vector k = (2π/λ)e, where e is a unit vector in the direction of propagation of the electron and λ is its wavelength.
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T*b m@zyu When one or more dimensions of the crystal approach interatomic distances or the electron's wavelength, however, the electron feels the effects of the crystal boundaries in addition to the periodic potential. The potential outside the solid is drastically different from the one inside. The influence of the boundaries is clearest in the context of the jellium model, in which the positive ion cores are smeared out as a homogeneous positive background. Inside the solid, the electron energy E(k) follows a simple parabolic form. The role of the boundaries is to severely restrict the allowed wave vectors that electrons can adopt inside the crystal.$^a8w cJ

}P [ axN]tu$w(z Ultrathin films, two-dimensional islands, and one-dimensional wires can be prepared using epitaxial methods and can exhibit what are known as quantum size effects (QSEs) that arise from the
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Q4EMl)c2~9i 一篇很不错的关于纳米结构的量子大小效应的文章。值得推荐一读。gNX y.h
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2^^4j[#|[r k :downloads  :pdf

:) 学习一下

谢谢楼主了，最近正在帮别人找这方面的文章。

补充一下这个知识，总是感觉不够系统！多谢了！

:D :D :D :D 多谢:D :D :D :D

Thank you very much！

thanks for contributions

还没看，不大能看懂，有看过的能不能用中文翻译一点看看

看一看,学习学习基础.

是阿，关于纳米技术方面的理论研究太少了。即便有一些，自己这可怜的物理基础看着好累啊。

回复 1# 的帖子

谢谢 楼主  就是要深入下纳米的性质才行

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vert good very strong!!:'(

下载下来研究研究！谢谢分享！

学习:handshake

回复 1# 的帖子

这类文章对新加入的纳米族太有用了，谢谢楼主！:victory:

补充一下这个知识，总是感觉不够系统！多谢了！