Impurity effect on hysteric magnetoconductance: holographic approachopen access
- Authors
- Kim, Kyung Kiu; Kim, Keun-Young; Sin, Sang-Jin; Seo, Yunseok
- Issue Date
- Nov-2021
- Publisher
- SPRINGER
- Keywords
- Holography and condensed matter physics (AdS/CMT); Gauge-gravity correspondence
- Citation
- JOURNAL OF HIGH ENERGY PHYSICS, no.11, pp.1 - 19
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF HIGH ENERGY PHYSICS
- Number
- 11
- Start Page
- 1
- End Page
- 19
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/140498
- DOI
- 10.1007/JHEP11(2021)046
- ISSN
- 1126-6708
- Abstract
- In this paper we study a hysteric phase transition from weak localization phase to hysteric magnetoconductance phase using gauge/gravity duality. This hysteric phase is triggered by a spontaneous magnetization related to DOUBLE-STRUCK CAPITAL Z(2) symmetry and time reversal symmetry in a 2+1 dimensional system with momentum relaxation. We derive thermoelectric conductivity formulas describing non-hysteric and hysteric phases. At low temperatures, this magnetoconductance shows similar phase transitions of topological insulator surface states. We also obtain hysteresis curves of Seebeck coefficient and Nernst signal. It turns out that our impurity parameter changes magnetic properties of the dual system. This is justified by showing increasing susceptibility and the spontaneous magnetization with increasing impurity parameter.
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