Loading...
Please wait, while we are loading the content...
Similar Documents
Uniform Current in Graphene Strip with Zigzag Edges
| Content Provider | Semantic Scholar |
|---|---|
| Author | Shuhei Yuki Daijiro |
| Copyright Year | 2009 |
| Abstract | Graphene exhibits zero-gap massless Dirac fermions and zero density of states at E = 0.1 These particles form localized states called edge states on a finite-width strip with zigzag edges at E = 0.2 Naively thinking, one may expect that a current is concentrated at the edge, but Muñoz-Rojas et al. noticed that it is homogeneously distributed,3 and Zârbo and Nikolić4 numerically obtained a result that the current density is maximum at the center of the strip. We rigorously derive an expression for the current density and clarify the reason why the current density of the edge state has a maximum at the center. The expectation value of local current density for a state |ψ〉 is defined as 〈ψ|ĵ(x,i),(x′,i′)|ψ〉 = 2et ~ Im [ |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/0903.1483v2.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Arabic numeral 0 Concentrate Dosage Form Exhibits as Topic Expectation value (quantum mechanics) Graphene Numerical analysis width |
| Content Type | Text |
| Resource Type | Article |
