Oscillatory band gap behavior in small diameter si-clathrate nanowires.

Oscillatory band gap behavior in small diameter si-clathrate nanowires. Research Abstract Details 

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Oscillatory band gap behavior in small diameter si-clathrate nanowires. Abstract Text:

Inna Ponomareva,Ernst Richter,Antonis N Andriotis,Madhu Menon,Inna Ponomareva,Ernst Richter,Antonis N Andriotis,Madhu Menon,Inna Ponomareva,Ernst Richter,Antonis N Andriotis,Madhu Menon,

Electronic structure analysis of small cagelike silicon nanowires is carried out and reveals many surprising features. The band gap values for all the nanowires are found to be smaller than their bulk counterparts. The most intriguing aspect appears to be the alternating sequence of direct and indirect band gaps as the diameter changes. This is attributed to the type of surface geometry. We illustrate this with two well-known clathrate forms as well as a new hexagonal clathrate structure with a direct band gap in the optical region.

Oscillatory band gap behavior in small diameter si-clathrate nanowires. Publishing Authors By Initials

I Ponomareva,E Richter,AN Andriotis,M Menon,I Ponomareva,E Richter,AN Andriotis,M Menon,I Ponomareva,E Richter,AN Andriotis,M Menon,

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Oscillatory band gap behavior in small diameter si-clathrate nanowires. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Nano letters

VOLUME: 7

Page Numbers: 3424-8

Journal Abbreviation: Nano Lett.

ISSN: 1530-6984

DAY: 18

MONTH: 10

YEAR: 2007

Oscillatory band gap behavior in small diameter si-clathrate nanowires. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Oscillatory band gap behavior in small diameter si-clathrate nanowires.

AFFILIATION: Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701.

Country: United States

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MEDLINETA: Nano Lett

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