Optical transitions between Landau levels: AA -stacked bilayer graphene

Yen Hung Ho; Jhao Ying Wu; Rong Bin Chen; Yu Huang Chiu; Ming Fa Lin

doi:10.1063/1.3488806

Optical transitions between Landau levels: AA -stacked bilayer graphene

Yen Hung Ho, Jhao Ying Wu, Rong Bin Chen, Yu Huang Chiu, Ming Fa Lin

Department of Physics

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

45 Citations (Scopus)

Abstract

The magneto-optical absorption spectra of AA -stacked bilayer graphene (AABG) exhibit two kinds of absorption peaks resulting from two groups of Landau levels (LLs). Only intragroup excitations that follow a single selection rule take place. The excitation channels are altered as the field strength approaches a critical strength. These optical properties can be comprehended by the characteristics of the LL wave functions. A comparison of AABG and AB -stacked bilayer graphene (BBG) demonstrates that the optical properties are dominated by the stacking symmetry. The presented results could offer a way to distinguish AABG from BBG and monolayer graphene.

Original language	English
Article number	101905
Journal	Applied Physics Letters
Volume	97
Issue number	10
DOIs	https://doi.org/10.1063/1.3488806
Publication status	Published - 2010 Sep 6

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3488806

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title = "Optical transitions between Landau levels: AA -stacked bilayer graphene",

abstract = "The magneto-optical absorption spectra of AA -stacked bilayer graphene (AABG) exhibit two kinds of absorption peaks resulting from two groups of Landau levels (LLs). Only intragroup excitations that follow a single selection rule take place. The excitation channels are altered as the field strength approaches a critical strength. These optical properties can be comprehended by the characteristics of the LL wave functions. A comparison of AABG and AB -stacked bilayer graphene (BBG) demonstrates that the optical properties are dominated by the stacking symmetry. The presented results could offer a way to distinguish AABG from BBG and monolayer graphene.",

author = "Ho, {Yen Hung} and Wu, {Jhao Ying} and Chen, {Rong Bin} and Chiu, {Yu Huang} and Lin, {Ming Fa}",

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AU - Ho, Yen Hung

AU - Wu, Jhao Ying

AU - Chen, Rong Bin

AU - Chiu, Yu Huang

AU - Lin, Ming Fa

N1 - Funding Information: This work was supported by the NSC and NCTS of Taiwan, under the Grant Nos. NSC 95-2112-M-006-028-MY3 and NSC 97-2112-M-110-001-MY2.

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N2 - The magneto-optical absorption spectra of AA -stacked bilayer graphene (AABG) exhibit two kinds of absorption peaks resulting from two groups of Landau levels (LLs). Only intragroup excitations that follow a single selection rule take place. The excitation channels are altered as the field strength approaches a critical strength. These optical properties can be comprehended by the characteristics of the LL wave functions. A comparison of AABG and AB -stacked bilayer graphene (BBG) demonstrates that the optical properties are dominated by the stacking symmetry. The presented results could offer a way to distinguish AABG from BBG and monolayer graphene.

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Optical transitions between Landau levels: AA -stacked bilayer graphene

Abstract

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