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CATEGORY:
Colloquium
TITLE:
Negative resistance, super-ballistic conductance and other wonders of viscous electronics
Speaker:
Gregory Falkovich
Affiliation:
Weizmann institute
WHEN:
Monday
15/05/2017, 14:30 - 15:30
WHERE:
Lidow, Rosen Auditorium (323)
Organizer:
Amos Yarom
Site:
Web-Site
Remarks:
-

Abstract

Quantum-critical strongly correlated systems feature universal collision-dominated collective transport. Viscous electronics is an emerging field dealing with systems in which strongly interacting electrons flow like a fluid. We identified vorticity as a macroscopic signature of electron viscosity and linked it with a striking macroscopic DC transport behavior: viscous friction can drive electric current against an applied field, resulting in a negative resistance, recently measured experimentally in graphene. I shall also describe current vortices, expulsion of electric field, conductance exceeding the fundamental quantum-ballistic limit and other wonders of viscous electronics. Strongly interacting electron-hole plasma in high-mobility graphene affords a unique link between quantum-critical electron transport and the wealth of fluid mechanics phenomena.


Nature Physics 2016, 12 : 672-676  Arxiv:1607.00986   1607.07269   1612.09239

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