Optical absorption in Thue-Morse and Fibonacci planar graphene superlattices: Theoretical report

被引：6

作者：

Azadi, L. ^{[1
]}

Shojaei, S. ^{[1
]}

机构：

[1] Univ Tabriz, Photon Dept, RIAPA, POB 51665-163, Tabriz, Iran

来源：

PHYSICA B-CONDENSED MATTER | 2019年 / 564卷

关键词：

Thue-Morse graphene superlattice (TGSL); Fibonacci graphene superlattice (FGSL); Heterostructured substrate; Optical transitions; Effective Dirac equation;

D O I：

10.1016/j.physb.2019.04.003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Theoretical comparative study has been done on the optical absorption of planar graphene superlattice with Thue-Morse and Fibonacci sequence formed by patterning graphene sheet on a heterosubstrate as Sio(2) and h-BN. A numerical method along with analytical approach is presented to obtain electronic structure and in particular, wavefunctions in these structures together with optical absorption. A tunable optical transitions between minibands is observed based on engineering structural parameters in both superlattice structures. Considerable optical absorption is obtained for Thue-Morse superlattice (TGSL) and Fibonacci superlattice (FGSL). Through detailed study a comparison between two structures is done to show their potential for photonics application.

引用

页码：10 / 16

页数：7

共 32 条

[1] Seeking room-temperature ferromagnetic semiconductors [J].

Ando, Koji .

SCIENCE, 2006, 312 (5782) :1883-1885

[2] Optical absorption in planar graphene superlattice: The role of structural parameters [J].

Azadi, L. ;

Shojaei, S. .

SUPERLATTICES AND MICROSTRUCTURES, 2018, 116 :95-104

[3]

Balog R, 2010, NAT MATER, V9, P315, DOI [10.1038/NMAT2710, 10.1038/nmat2710]

[4] The electronic properties of graphene [J].

Castro Neto, A. H. ;

Guinea, F. ;

Peres, N. M. R. ;

Novoselov, K. S. ;

Geim, A. K. .

REVIEWS OF MODERN PHYSICS, 2009, 81 (01) :109-162

[5] Superlattices consisting of "lines" of adsorbed hydrogen atom pairs on graphene [J].

Chernozatonskii, L. A. ;

Sorokin, P. B. ;

Belova, E. É. ;

Bruening, J. ;

Fedorov, A. S. .

JETP LETTERS, 2007, 85 (01) :77-81

[6] Hallmark of perfect graphene [J].

Duplock, EJ ;

Scheffler, M ;

Lindan, PJD .

PHYSICAL REVIEW LETTERS, 2004, 92 (22) :225502-1

[7] Tunable electronic band structures and zero-energy modes of heterosubstrate-induced graphene superlattices [J].

Fan, Xiong ;

Huang, Wenjun ;

Ma, Tianxing ;

Wang, Li-Gang .

PHYSICAL REVIEW B, 2016, 93 (16)

[8] The rise of graphene [J].

Geim, A. K. ;

Novoselov, K. S. .

NATURE MATERIALS, 2007, 6 (03) :183-191

[9] Energy band-gap engineering of graphene nanoribbons [J].

Han, Melinda Y. ;

Oezyilmaz, Barbaros ;

Zhang, Yuanbo ;

Kim, Philip .

PHYSICAL REVIEW LETTERS, 2007, 98 (20)

[10] Quantum spin Hall effect in graphene [J].

Kane, CL ;

Mele, EJ .

PHYSICAL REVIEW LETTERS, 2005, 95 (22)

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