Soliton trap in strained graphene nanoribbons
The wavefunction of a massless fermion consists of two chiralities, left handed and right handed, which are eigenstates of the chiral operator. The theory of weak interactions of elementary particle physics is not symmetric about the two chiralities, and such a symmetry-breaking theory is referred t...
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Institute of Physics Publishing
2012
|
| Online Access: | http://hdl.handle.net/1721.1/70530 https://orcid.org/0000-0001-8492-2261 |
| _version_ | 1811073325812678656 |
|---|---|
| author | Sasaki, Ken-ichi Saito, Riichiro Dresselhaus, Mildred Wakabayashi, Katsunori Enoki, Toshiaki |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Sasaki, Ken-ichi Saito, Riichiro Dresselhaus, Mildred Wakabayashi, Katsunori Enoki, Toshiaki |
| author_sort | Sasaki, Ken-ichi |
| collection | MIT |
| description | The wavefunction of a massless fermion consists of two chiralities, left handed and right handed, which are eigenstates of the chiral operator. The theory of weak interactions of elementary particle physics is not symmetric about the two chiralities, and such a symmetry-breaking theory is referred to as a chiral gauge theory. The chiral gauge theory can be applied to the massless Dirac particles of graphene. In this paper, we show within the framework of the chiral gauge theory for graphene that a topological soliton exists near the boundary of a graphene nanoribbon in the presence of a strain. This soliton is a zero-energy state connecting two chiralities and is an elementary excitation transporting a pseudo-spin. The soliton should be observable by means of a scanning tunneling microscopy experiment. |
| first_indexed | 2024-09-23T09:31:19Z |
| format | Article |
| id | mit-1721.1/70530 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:31:19Z |
| publishDate | 2012 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | mit-1721.1/705302024-03-18T20:54:18Z Soliton trap in strained graphene nanoribbons Sasaki, Ken-ichi Saito, Riichiro Dresselhaus, Mildred Wakabayashi, Katsunori Enoki, Toshiaki Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Physics Dresselhaus, Mildred Saito, Riichiro Dresselhaus, Mildred The wavefunction of a massless fermion consists of two chiralities, left handed and right handed, which are eigenstates of the chiral operator. The theory of weak interactions of elementary particle physics is not symmetric about the two chiralities, and such a symmetry-breaking theory is referred to as a chiral gauge theory. The chiral gauge theory can be applied to the massless Dirac particles of graphene. In this paper, we show within the framework of the chiral gauge theory for graphene that a topological soliton exists near the boundary of a graphene nanoribbon in the presence of a strain. This soliton is a zero-energy state connecting two chiralities and is an elementary excitation transporting a pseudo-spin. The soliton should be observable by means of a scanning tunneling microscopy experiment. Japan. Ministry of Education, Culture, Sports, Science and Technology (MEXT grant no. 20241023) Japan. Ministry of Education, Culture, Sports, Science and Technology (grant-in-aid no. 20001006) National Science Foundation (U.S.) (grant NSF/DMR 07-04197) 2012-05-07T19:28:37Z 2012-05-07T19:28:37Z 2010-10 2010-07 Article http://purl.org/eprint/type/JournalArticle 1367-2630 http://hdl.handle.net/1721.1/70530 Sasaki, Ken-ichi et al. “Soliton Trap in Strained Graphene Nanoribbons.” New Journal of Physics 12.10 (2010): 103015. Web. https://orcid.org/0000-0001-8492-2261 en_US http://dx.doi.org/10.1088/1367-2630/12/10/103015 New Journal of Physics Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ application/pdf Institute of Physics Publishing New Journal of Physics |
| spellingShingle | Sasaki, Ken-ichi Saito, Riichiro Dresselhaus, Mildred Wakabayashi, Katsunori Enoki, Toshiaki Soliton trap in strained graphene nanoribbons |
| title | Soliton trap in strained graphene nanoribbons |
| title_full | Soliton trap in strained graphene nanoribbons |
| title_fullStr | Soliton trap in strained graphene nanoribbons |
| title_full_unstemmed | Soliton trap in strained graphene nanoribbons |
| title_short | Soliton trap in strained graphene nanoribbons |
| title_sort | soliton trap in strained graphene nanoribbons |
| url | http://hdl.handle.net/1721.1/70530 https://orcid.org/0000-0001-8492-2261 |
| work_keys_str_mv | AT sasakikenichi solitontrapinstrainedgraphenenanoribbons AT saitoriichiro solitontrapinstrainedgraphenenanoribbons AT dresselhausmildred solitontrapinstrainedgraphenenanoribbons AT wakabayashikatsunori solitontrapinstrainedgraphenenanoribbons AT enokitoshiaki solitontrapinstrainedgraphenenanoribbons |