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Disorder-drive transition in Dirac semimetals and semiconductors

APR 05, 2017 | 11:00 AM TO 12:30 PM

Details

WHERE:

The Graduate Center
365 Fifth Avenue

WHEN:

April 05, 2017: 11:00 AM-12:30 PM

ADMISSION:

Free

SPONSOR:

Initiative for the Theoretical Sciences and the Department of Physics

Description

In Room 5209. Condensed Matter seminar with Leo Radzihovsky (University of Colorado)

Motivated by Weyl semimetals and weakly doped semiconductors, I will discuss recent work on non-Anderson
disorder-driven criticality in weakly doped semimetals and semiconductors. I will show that above a critical dimensions at low-electron density these systems generically exhibit a novel disorder-driven quantum phase transition that manifests itself in the critical behavior of the single particle density of states, electrical transport, wavefunction multi-fractality and other observables. These can be computed via a controlled renormalization-group analysis.