Electronic structure of bilayer graphene : a real-space Green’s function study
In this paper, a real-space analytical expression for the free Green’s function (propagator) of bilayer graphene is derived based on the effective-mass approximation. Green’s function displays highly spatial anisotropy with threefold rotational symmetry. The calculated...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2011
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/92051 http://hdl.handle.net/10220/6915 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Nanyang Technological University |
| Language: | English |
| id |
sg-ntu-dr.10356-92051 |
|---|---|
| record_format |
dspace |
| spelling |
sg-ntu-dr.10356-920512023-07-14T15:57:43Z Electronic structure of bilayer graphene : a real-space Green’s function study Wang, Z. F. Li, Qunxiang Su, Haibin Wang, Xiaoping Shi, Q. W. Chen, Jie Yang, Jinlong Hou, J. G. School of Materials Science & Engineering DRNTU::Engineering::Materials::Nanostructured materials In this paper, a real-space analytical expression for the free Green’s function (propagator) of bilayer graphene is derived based on the effective-mass approximation. Green’s function displays highly spatial anisotropy with threefold rotational symmetry. The calculated local density of states (LDOS) of a perfect bilayer graphene produces the main features of the observed scanning tunneling microscopy (STM) images of graphite at low bias voltage. Some predicted features of the LDOS can be verified by STM measurements. In addition, we also calculate the LDOS of bilayer graphene with vacancies by using the multiple-scattering theory (scatterings are localized around the vacancy of bilayer graphene). We observe that the interference patterns are determined mainly by the intrinsic properties of the propagator and the symmetry of the vacancies. Published version 2011-07-19T00:43:35Z 2019-12-06T18:16:31Z 2011-07-19T00:43:35Z 2019-12-06T18:16:31Z 2007 2007 Journal Article Wang, Z. F., Li, Q., Su, H., Wang, X., Shi, Q. W., Chen, J., et al. (2007). Electronic structure of bilayer graphene: a real-space Green’s function study. Physical Review B, 75. https://hdl.handle.net/10356/92051 http://hdl.handle.net/10220/6915 10.1103/PhysRevB.75.085424 en Physical review B © 2007 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at: [DOI: http://dx.doi.org/10.1103/PhysRevB.75.085424]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 8 p. application/pdf |
| institution |
Nanyang Technological University |
| building |
NTU Library |
| continent |
Asia |
| country |
Singapore Singapore |
| content_provider |
NTU Library |
| collection |
DR-NTU |
| language |
English |
| topic |
DRNTU::Engineering::Materials::Nanostructured materials |
| spellingShingle |
DRNTU::Engineering::Materials::Nanostructured materials Wang, Z. F. Li, Qunxiang Su, Haibin Wang, Xiaoping Shi, Q. W. Chen, Jie Yang, Jinlong Hou, J. G. Electronic structure of bilayer graphene : a real-space Green’s function study |
| description |
In this paper, a real-space analytical expression for the free Green’s function (propagator) of bilayer
graphene is derived based on the effective-mass approximation. Green’s function displays highly spatial anisotropy
with threefold rotational symmetry. The calculated local density of states (LDOS) of a perfect bilayer
graphene produces the main features of the observed scanning tunneling microscopy (STM) images of graphite
at low bias voltage. Some predicted features of the LDOS can be verified by STM measurements. In addition,
we also calculate the LDOS of bilayer graphene with vacancies by using the multiple-scattering theory (scatterings
are localized around the vacancy of bilayer graphene). We observe that the interference patterns are
determined mainly by the intrinsic properties of the propagator and the symmetry of the vacancies. |
| author2 |
School of Materials Science & Engineering |
| author_facet |
School of Materials Science & Engineering Wang, Z. F. Li, Qunxiang Su, Haibin Wang, Xiaoping Shi, Q. W. Chen, Jie Yang, Jinlong Hou, J. G. |
| format |
Article |
| author |
Wang, Z. F. Li, Qunxiang Su, Haibin Wang, Xiaoping Shi, Q. W. Chen, Jie Yang, Jinlong Hou, J. G. |
| author_sort |
Wang, Z. F. |
| title |
Electronic structure of bilayer graphene : a real-space Green’s function study |
| title_short |
Electronic structure of bilayer graphene : a real-space Green’s function study |
| title_full |
Electronic structure of bilayer graphene : a real-space Green’s function study |
| title_fullStr |
Electronic structure of bilayer graphene : a real-space Green’s function study |
| title_full_unstemmed |
Electronic structure of bilayer graphene : a real-space Green’s function study |
| title_sort |
electronic structure of bilayer graphene : a real-space green’s function study |
| publishDate |
2011 |
| url |
https://hdl.handle.net/10356/92051 http://hdl.handle.net/10220/6915 |
| _version_ |
1773551331690151936 |