Coulomb Blockade of Electron Transport through a Proximitized Nanowire

Event Dates: 

Friday, April 15, 2016 - 10:30am

CTQM Seminar Type: 

  • CTQM Seminar

Seminar Location: 

  • Duane Physics Room G126

Speaker Name(s): 

Leonid Glazman

Speaker Affiliation(s): 

Yale University

Abstract, Event Details: 

We identify the leading processes of electron transport across finite-length segments of proximitized nanowires and build a quantitative theory of their two-terminal conductance. In the presence of spin-orbit interaction, a nanowire can be tuned across the topological transition point by an applied magnetic field. Due to a finite segment length, electron transport is controlled by the Coulomb blockade. Upon increasing of the field, the shape and magnitude of the Coulomb blockade peaks in the linear conductance is defined, respectively, by Andreev reflection, single-electron tunneling, and resonant tunneling through the Majorana modes emerging after the topological transition. Our theory provides the framework for the analysis of recent experiments with proximitized nanowires, and identifies the signatures of the topological transition in the two-terminal conductance.

Research Category: