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Scaling near random criticality in two-dimensional Dirac fermions
| Content Provider | Semantic Scholar |
|---|---|
| Author | Morita, Yoshihisa Hatsugai, Yasuhiro |
| Copyright Year | 1998 |
| Abstract | Recently the existence of a random critical line in two dimensional Dirac fermions is confirmed. In this paper, we focus on its scaling properties, especially in the critical region. We treat Dirac fermions in two dimensions with two types of randomness, a random site (RS) model and a random hopping (RH) model. The RS model belongs to the usual orthogonal class and all states are localized. For the RH model, there is an additional symmetry expressed by {H, γ} = 0. Therefore, although all non-zero energy states localize, the localization length diverges at the zero energy. In the weak localization region, the generalized Ohm's law in fractional dimensions, d * (< 2), has been observed for the RH model. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/cond-mat/9807029v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Arabic numeral 0 Dimensions Frequency-hopping spread spectrum Image scaling Internationalization and localization Line level Ohm's law Randomness Self-organized criticality Test scaling Type III site-specific deoxyribonuclease |
| Content Type | Text |
| Resource Type | Article |
