Graphene-Substrate Effects on Characteristics of Weak-Coupling Bound Magnetopolaron
Joint Authors
Ding, Zhao-Hua
Geng, Yan-Bo
Zhao, Ying
Sun, Yong
Xiao, Jing-Lin
Source
Advances in Condensed Matter Physics
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-05-17
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Graphene has many unique properties which have made it a hotbed of scientific research in recent years.
However, it is not expected intuitively that the strong effects of the substrate and Coulomb doping in the center of crystal cell on the polaron in monolayer graphene.
Here, the interaction energy of surface electron (hole) in the graphene and optical phonons in the substrate, which give rise to weakly coupled polarons, is analyzed in the context of the Coulomb doping.
The ground-state energy of the polaron is calculated using the Lee-Low-Pine unitary transformation and linear combination operator method.
It is found that the ground-state energy is an increasing function of magnetic field strength, the bound Coulomb potential, and the cutoff wavenumber.
Numerical results also reveal that the ground-state energy reduces as the distance between the graphene and the substrate is increased.
Moreover, the ground energy level of polaron shows the two (+) and (−) branches and zero-Landau energy (ground) level separation in the graphene-substrate material.
American Psychological Association (APA)
Ding, Zhao-Hua& Geng, Yan-Bo& Zhao, Ying& Sun, Yong& Xiao, Jing-Lin. 2020. Graphene-Substrate Effects on Characteristics of Weak-Coupling Bound Magnetopolaron. Advances in Condensed Matter Physics،Vol. 2020, no. 2020, pp.1-6.
https://search.emarefa.net/detail/BIM-1126096
Modern Language Association (MLA)
Ding, Zhao-Hua…[et al.]. Graphene-Substrate Effects on Characteristics of Weak-Coupling Bound Magnetopolaron. Advances in Condensed Matter Physics No. 2020 (2020), pp.1-6.
https://search.emarefa.net/detail/BIM-1126096
American Medical Association (AMA)
Ding, Zhao-Hua& Geng, Yan-Bo& Zhao, Ying& Sun, Yong& Xiao, Jing-Lin. Graphene-Substrate Effects on Characteristics of Weak-Coupling Bound Magnetopolaron. Advances in Condensed Matter Physics. 2020. Vol. 2020, no. 2020, pp.1-6.
https://search.emarefa.net/detail/BIM-1126096
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1126096