Determination of dynamical exponents of graphene at quantum critical point by holography
- Title
- Determination of dynamical exponents of graphene at quantum critical point by holography
- Author
- 신상진
- Issue Date
- 2020-12
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v. 102, no. 12, article no. 126023, page. 1-9
- 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.
- URI
- https://journals.aps.org/prd/abstract/10.1103/PhysRevD.102.126023https://repository.hanyang.ac.kr/handle/20.500.11754/174977
- ISSN
- 2470-0010; 2470-0029
- DOI
- 10.1103/PhysRevD.102.126023
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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