Electronic viscosity and energy relaxation in neutral graphene

被引：8

作者：

Gall, Vanessa ^{[1
,2
]}

Narozhny, Boris N. ^{[2
,3
]}

V. Gornyi, Igor ^{[1
,2
,4
]}

机构：

[1] Karlsruhe Inst Technol, Inst Quantum Mat & Technol, D-76021 Karlsruhe, Germany

[2] Karlsruhe Inst Technol, Inst Theorie Kondensierten Mat, D-76128 Karlsruhe, Germany

[3] Natl Res Nucl Univ MEPhI Moscow Engn Phys Inst, Moscow 115409, Russia

[4] Ioffe Inst, St Petersburg 194021, Russia

来源：

PHYSICAL REVIEW B | 2023年 / 107卷 / 04期

关键词：

FLOW; DISSIPATION; RESISTANCE;

D O I：

10.1103/PhysRevB.107.045413

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We explore hydrodynamics of Dirac fermions in neutral graphene in the Corbino geometry. In the absence of a magnetic field, the bulk Ohmic charge flow and the hydrodynamic energy flow are decoupled. However, the energy flow does affect the overall resistance of the system through viscous dissipation and energy relaxation that has to be compensated by the work done by the current source. Solving the hydrodynamic equations, we find that local temperature and electric potential are discontinuous at the interfaces with the leads as well as the device resistance and argue that this makes Corbino geometry a feasible choice for an experimental observation of the Dirac fluid.

引用

页数：6

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