Optical properties of simple hexagonal and rhombohedral few-layer graphenes in an electric field

被引：16

作者：

Chang, C. P. ^{[1
]}

Wang, J. ^{[2
]}

Lu, C. L. ^{[2
]}

Huang, Y. C. ^{[2
]}

Lin, M. F. ^{[2
]}

Chen, R. B. ^{[3
]}

机构：

[1] Tainan Univ Technol, Ctr Gen Educ, Tainan 710, Taiwan

[2] Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan

[3] Natl Kaohsiung Marine Univ, Ctr Gen Educ, Kaohsiung 830, Taiwan

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 10期

关键词：

D O I：

10.1063/1.2924431

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The influence of a perpendicular electric field (F) on the optical properties of simple hexagonal and rhombohedral few-layer graphenes is studied through the tight-binding model. The electric-field-modulated absorption spectra depend on the stacking sequence. The low-energy absorption spectra of simple hexagonal few-layer graphenes exhibit the jumping structures in the absence or presence of an electric field. On the other hand, absorption spectra of rhombohedral few-layer graphenes show discontinuities and sharp peaks at F=0. Besides, the application of F affects the absorption spectra, generates new peaks, and changes peak position and peak height. The frequency of the peak is predicted to be closely associated with the stacking sequences and the field strength. Above all, the predicted absorption spectra could be verified by optical measurements. (C) 2008 American Institute of Physics.

引用

页数：8

共 26 条

[1] Field emission mechanisms of graphitic nanostructures [J].

Araidai, M ;

Nakamura, Y ;

Watanabe, K .

PHYSICAL REVIEW B, 2004, 70 (24) :1-5

[2] Coulomb oscillations and Hall effect in quasi-2D graphite quantum dots [J].

Bunch, JS ;

Yaish, Y ;

Brink, M ;

Bolotin, K ;

McEuen, PL .

NANO LETTERS, 2005, 5 (02) :287-290

[3] Magneto electronic properties of a graphite sheet [J].

Chang, CP ;

Lu, CL ;

Shyu, FL ;

Chen, RB ;

Fang, YK ;

Lin, MF .

CARBON, 2004, 42 (14) :2975-2980

[4] 1ST-PRINCIPLES STUDY OF THE STACKING EFFECT ON THE ELECTRONIC-PROPERTIES OF GRAPHITE(S) [J].

CHARLIER, JC ;

GONZE, X ;

MICHENAUD, JP .

CARBON, 1994, 32 (02) :289-299

[5] 1ST-PRINCIPLES STUDY OF THE ELECTRONIC-PROPERTIES OF SIMPLE HEXAGONAL GRAPHITE [J].

CHARLIER, JC ;

MICHENAUD, JP ;

GONZE, X .

PHYSICAL REVIEW B, 1992, 46 (08) :4531-4539

[6] TIGHT-BINDING DENSITY OF ELECTRONIC STATES OF PREGRAPHITIC CARBON [J].

CHARLIER, JC ;

MICHENAUD, JP ;

LAMBIN, P .

PHYSICAL REVIEW B, 1992, 46 (08) :4540-4543

[7] 1ST-PRINCIPLES STUDY OF THE ELECTRONIC-PROPERTIES OF GRAPHITE [J].

CHARLIER, JC ;

GONZE, X ;

MICHENAUD, JP .

PHYSICAL REVIEW B, 1991, 43 (06) :4579-4589

[8] Unconventional integer quantum Hall effect in graphene [J].

Gusynin, VP ;

Sharapov, SG .

PHYSICAL REVIEW LETTERS, 2005, 95 (14)

[9] Electron decay rates in a zero-gap graphite layer [J].

Ho, J. H. ;

Chang, C. P. ;

Chen, R. B. ;

Lin, M. F. .

PHYSICS LETTERS A, 2006, 357 (4-5) :401-406

[10] Electronic excitations of the multilayered graphite [J].

Ho, JH ;

Chang, CP ;

Lin, MF .

PHYSICS LETTERS A, 2006, 352 (4-5) :446-450

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