Modulation of Landau levels and de Haas-van Alphen oscillation in magnetized graphene by uniaxial tensile strain/ stress

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:522

Article

Le, Dai-Nam^1,2  Le, Van-Hoang³  Roy, Pinaki^1,2 

[1] Ton Duc Thang Univ, Adv Inst Mat Sci, Atom Mol & Opt Phys Res Grp, Ho Chi Minh City, Vietnam

[2] Ton Duc Thang Univ, Fac Appl Sci, Ho Chi Minh City, Vietnam

[3] Ho Chi Minh City Univ Educ, Dept Phys, 280 An Duong Vuong St,Dist 5, Ho Chi Minh City, Vietnam

关键词: de Haas-van Alphen effect;    Anisotropic Fermi velocity;    Landau levels;    Strained graphene;   

DOI  :  10.1016/j.jmmm.2020.167473

来源: Elsevier

【 摘 要 】

The strain engineering technique allows us to alter the electronic properties of graphene in various ways. Within the continuum approximation, the influences of strain result in the appearance of a pseudo-gauge field and modulated Fermi velocity. In this study, we investigate theoretically the effect of linear uniaxial tensile strain and/or stress, which makes the Fermi velocity anisotropic, on a magnetized graphene sheet in the presence of an applied electrostatic voltage. More specifically, we analyze the consequences of the anisotmpic nature of the Fermi velocity on the structure Landau levels and de Haas-van Alphen (dHvA) quantum oscillation in the magnetized graphene sheet. The effect of the direction of the applied strain has also been discussed.

【 授权许可】

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