The spin-orbit interaction enhanced terahertz absorption in graphene around the K point

A. R. Wright; G. X. Wang; W. Xu; Z. Zeng; C. Zhang

doi:10.1016/j.mejo.2008.11.019

The spin-orbit interaction enhanced terahertz absorption in graphene around the K point

A. R. Wright^*, G. X. Wang, W. Xu, Z. Zeng, C. Zhang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We present a quantitative analysis on the effect of the spin-orbit interaction in the optical absorption of π-electrons in graphene. It has been shown that the optical absorption amplitude of graphene around the K point in the Brillouin zone has a node in the two-dimensional Brillouin zone of honeycomb lattice. We calculated the k-dependent absorption matrix by taking into account the finite spin-orbit interaction in graphene. It was found that the spin-orbit interaction lifts the nodes in the absorption matrix. Furthermore, in the terahertz frequency regime, the spin-orbit interaction can significantly enhance the optical absorption in graphene, by up to 100%. Crown

Original language	English
Pages (from-to)	857-859
Number of pages	3
Journal	Microelectronics Journal
Volume	40
Issue number	4-5
DOIs	https://doi.org/10.1016/j.mejo.2008.11.019
Publication status	Published - Apr 2009

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10.1016/j.mejo.2008.11.019

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title = "The spin-orbit interaction enhanced terahertz absorption in graphene around the K point",

abstract = "We present a quantitative analysis on the effect of the spin-orbit interaction in the optical absorption of π-electrons in graphene. It has been shown that the optical absorption amplitude of graphene around the K point in the Brillouin zone has a node in the two-dimensional Brillouin zone of honeycomb lattice. We calculated the k-dependent absorption matrix by taking into account the finite spin-orbit interaction in graphene. It was found that the spin-orbit interaction lifts the nodes in the absorption matrix. Furthermore, in the terahertz frequency regime, the spin-orbit interaction can significantly enhance the optical absorption in graphene, by up to 100%. Crown",

keywords = "Absorption, Graphene, Spin-orbit interaction",

author = "Wright, {A. R.} and Wang, {G. X.} and W. Xu and Z. Zeng and C. Zhang",

year = "2009",

month = apr,

doi = "10.1016/j.mejo.2008.11.019",

language = "English",

volume = "40",

pages = "857--859",

journal = "Microelectronics Journal",

issn = "0026-2692",

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number = "4-5",

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TY - JOUR

T1 - The spin-orbit interaction enhanced terahertz absorption in graphene around the K point

AU - Wright, A. R.

AU - Wang, G. X.

AU - Xu, W.

AU - Zeng, Z.

AU - Zhang, C.

PY - 2009/4

Y1 - 2009/4

N2 - We present a quantitative analysis on the effect of the spin-orbit interaction in the optical absorption of π-electrons in graphene. It has been shown that the optical absorption amplitude of graphene around the K point in the Brillouin zone has a node in the two-dimensional Brillouin zone of honeycomb lattice. We calculated the k-dependent absorption matrix by taking into account the finite spin-orbit interaction in graphene. It was found that the spin-orbit interaction lifts the nodes in the absorption matrix. Furthermore, in the terahertz frequency regime, the spin-orbit interaction can significantly enhance the optical absorption in graphene, by up to 100%. Crown

AB - We present a quantitative analysis on the effect of the spin-orbit interaction in the optical absorption of π-electrons in graphene. It has been shown that the optical absorption amplitude of graphene around the K point in the Brillouin zone has a node in the two-dimensional Brillouin zone of honeycomb lattice. We calculated the k-dependent absorption matrix by taking into account the finite spin-orbit interaction in graphene. It was found that the spin-orbit interaction lifts the nodes in the absorption matrix. Furthermore, in the terahertz frequency regime, the spin-orbit interaction can significantly enhance the optical absorption in graphene, by up to 100%. Crown

KW - Absorption

KW - Graphene

KW - Spin-orbit interaction

UR - http://www.scopus.com/inward/record.url?scp=63749115396&partnerID=8YFLogxK

U2 - 10.1016/j.mejo.2008.11.019

DO - 10.1016/j.mejo.2008.11.019

M3 - Article

SN - 0026-2692

VL - 40

SP - 857

EP - 859

JO - Microelectronics Journal

JF - Microelectronics Journal

IS - 4-5

ER -

The spin-orbit interaction enhanced terahertz absorption in graphene around the K point

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