Determination of dynamical exponents of graphene at quantum critical point by holographyopen access
- Authors
- Song, Geunho; Seo, Yunseok; Sin, Sang-Jin
- Issue Date
- Dec-2020
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.102, no.12, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 102
- Number
- 12
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/144296
- DOI
- 10.1103/PhysRevD.102.126023
- ISSN
- 2470-0010
- Abstract
- We calculate the transport of a theory with two conserved currents by the holographic method and compare it with graphene data to determine its dynamical exponents (z, theta), which characterizes a "quantum critical point." As a result, we find that the electric and the thermal conductivity data can be fit more naturally if we assume (z, theta) = (3/2,1) rather than (1,0). Furthermore, we find that thermoelectric power data at high temperature can be fit if we use (3/2,1) but not by (1,0). The theta = 1 result can be interpreted as taking into account the fermionic nature of the electrons, and z = 3/2 can be interpreted as the flattened band by the strong interaction.
- Files in This Item
-
- Appears in
Collections - 서울 자연과학대학 > 서울 물리학과 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.