Thermometry for Dirac fermions in graphene

被引：0
|
作者：
Fan-Hung Liu
Chang-Shun Hsu
Shun-Tsung Lo
Chiashain Chuang
Lung-I Huang
Tak-Pong Woo
Chi-Te Liang
Y. Fukuyama
Y. Yang
R. E. Elmquist
Pengjie Wang
Xi Lin
机构：
[1] National Taiwan University,Graduate Institute of Applied Physics
[2] National Taiwan University,Department of Physics
[3] National Institute of Advanced Industrial Science and Technology (AIST),International Center for Quantum Materials
[4] National Institute of Standards and Technology (NIST) Gaithersburg,undefined
[5] Peking University,undefined
来源：
Journal of the Korean Physical Society | 2015年 / 66卷
关键词：
Graphene; Dirac fermions; Weak localization; Thermometry;
D O I：
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学科分类号：
摘要：
We use both the zero-magnetic-field resistivity and the phase coherence time determined by weak localization as independent thermometers for Dirac fermions (DF) in multilayer graphene. In the high current (I) region, there exists a simple power law TDF ∝ I~0.5, where TDF is the effective Dirac fermion temperature for epitaxial graphene on SiC. In contrast, TDF ∝ I~1 in exfoliated multilayer graphene. We discuss possible reasons for the different power laws observed in these multilayer graphene systems. Our experimental results on DF-phonon scattering may find applications in graphene-based nanoelectronics.
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页码：1 / 6
页数：5
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