Noninvasive probes of charge fractionalization in quantum spin Hall insulators

Ion Garate; Karyn Le Hur

doi:10.1103/PhysRevB.85.195465

Noninvasive probes of charge fractionalization in quantum spin Hall insulators

Ion Garate
, Karyn Le Hur

Yale University

Research output: Contribution to journal › Article › peer-review

Abstract

When an electron with well-defined momentum tunnels into a nonchiral Luttinger liquid, it breaks up into two separate wave packets that carry fractional charges and move in opposite directions. A direct observation of this phenomenon has proven elusive, mainly due to single-particle and plasmon backscattering caused by measurement probes. This paper theoretically introduces two topological insulator devices that are naturally suited for detecting fractional charges and their velocities directly and in a noninvasive fashion.

Original language	English
Article number	195465
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	85
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevB.85.195465
Publication status	Published - 30 May 2012

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title = "Noninvasive probes of charge fractionalization in quantum spin Hall insulators",

abstract = "When an electron with well-defined momentum tunnels into a nonchiral Luttinger liquid, it breaks up into two separate wave packets that carry fractional charges and move in opposite directions. A direct observation of this phenomenon has proven elusive, mainly due to single-particle and plasmon backscattering caused by measurement probes. This paper theoretically introduces two topological insulator devices that are naturally suited for detecting fractional charges and their velocities directly and in a noninvasive fashion.",

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Noninvasive probes of charge fractionalization in quantum spin Hall insulators

Abstract

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