Bibliographic Details
| Title: |
Magnetotransport and complexity of holographic metal-insulator transitions |
| Authors: |
Yu-Sen An, Teng Ji, Li Li |
| Source: |
Journal of High Energy Physics, Vol 2020, Iss 10, Pp 1-37 (2020) |
| Publisher Information: |
SpringerOpen, 2020. |
| Publication Year: |
2020 |
| Collection: |
LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
| Subject Terms: |
Gauge-gravity correspondence, Holography and condensed matter physics (AdS/CMT), Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
| More Details: |
Abstract We study the magnetotransport in a minimal holographic setup of a metal- insulator transition in two spatial dimensions. Some generic features are obtained without referring to the non-linear details of the holographic theory. The temperature dependence of resistivity is found to be well scaled with a single parameter T 0, which approaches zero at some critical charge density ρ c , and increases as a power law T 0 ∼ |ρ − ρ c | 1/2 both in metallic (ρ > ρ c ) and insulating (ρ < ρ c ) regions in the vicinity of the transition. Similar features also happen by changing the disorder strength as well as magnetic field. By requiring a positive definite longitudinal conductivity in the presence of an applied magnetic field restricts the allowed parameter space of theory parameters. We explicitly check the consistency of parameter range for two representative models, and compute the optical conductivities for both metallic and insulating phases, from which a disorder- induced transfer of spectral weight from low to high energies is manifest. We construct the phase diagram in terms of temperature and disorder strength. The complexity during the transition is studied and is found to be not a good probe to the metal-insulator transition. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
1029-8479 |
| Relation: |
http://link.springer.com/article/10.1007/JHEP10(2020)023; https://doaj.org/toc/1029-8479 |
| DOI: |
10.1007/JHEP10(2020)023 |
| Access URL: |
https://doaj.org/article/ca0db8e837834896822e33c75dc3d7ce |
| Accession Number: |
edsdoj.0db8e837834896822e33c75dc3d7ce |
| Database: |
Directory of Open Access Journals |
