Charge fractionalization in a mesoscopic ring

Wade Degottardi, Siddhartha Lal, Smitha Vishveshwara

Research output: Contribution to journalArticle

Abstract

We study the fractionalization of an electron tunneling into a strongly interacting electronic one-dimensional ring. As a complement to transport measurements in quantum wires connected to leads, we propose noninvasive measures involving the magnetic field profile around the ring to probe this fractionalization. In particular, we show that the magnetic field squared produced by the electron and the power that it would induce in a detector exhibit anisotropic profiles that depend on the degree of fractionalization. We contrast true fractionalization with two other scenarios which could mimic it - quantum superposition and classical probabilistic electron insertion. We show that the proposed field-dependent measures and those of the persistent current can distinguish between these three scenarios.

Original languageEnglish (US)
Article number026402
JournalPhysical review letters
Volume110
Issue number2
DOIs
StatePublished - Jan 8 2013

Fingerprint

rings
profiles
electron tunneling
quantum wires
magnetic fields
complement
insertion
electrons
probes
detectors
electronics

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Charge fractionalization in a mesoscopic ring. / Degottardi, Wade; Lal, Siddhartha; Vishveshwara, Smitha.

In: Physical review letters, Vol. 110, No. 2, 026402, 08.01.2013.

Research output: Contribution to journalArticle

Degottardi, Wade ; Lal, Siddhartha ; Vishveshwara, Smitha. / Charge fractionalization in a mesoscopic ring. In: Physical review letters. 2013 ; Vol. 110, No. 2.
@article{76d44ee7e7234b7b9301b92becc614f7,
title = "Charge fractionalization in a mesoscopic ring",
abstract = "We study the fractionalization of an electron tunneling into a strongly interacting electronic one-dimensional ring. As a complement to transport measurements in quantum wires connected to leads, we propose noninvasive measures involving the magnetic field profile around the ring to probe this fractionalization. In particular, we show that the magnetic field squared produced by the electron and the power that it would induce in a detector exhibit anisotropic profiles that depend on the degree of fractionalization. We contrast true fractionalization with two other scenarios which could mimic it - quantum superposition and classical probabilistic electron insertion. We show that the proposed field-dependent measures and those of the persistent current can distinguish between these three scenarios.",
author = "Wade Degottardi and Siddhartha Lal and Smitha Vishveshwara",
year = "2013",
month = "1",
day = "8",
doi = "10.1103/PhysRevLett.110.026402",
language = "English (US)",
volume = "110",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "2",

}

TY - JOUR

T1 - Charge fractionalization in a mesoscopic ring

AU - Degottardi, Wade

AU - Lal, Siddhartha

AU - Vishveshwara, Smitha

PY - 2013/1/8

Y1 - 2013/1/8

N2 - We study the fractionalization of an electron tunneling into a strongly interacting electronic one-dimensional ring. As a complement to transport measurements in quantum wires connected to leads, we propose noninvasive measures involving the magnetic field profile around the ring to probe this fractionalization. In particular, we show that the magnetic field squared produced by the electron and the power that it would induce in a detector exhibit anisotropic profiles that depend on the degree of fractionalization. We contrast true fractionalization with two other scenarios which could mimic it - quantum superposition and classical probabilistic electron insertion. We show that the proposed field-dependent measures and those of the persistent current can distinguish between these three scenarios.

AB - We study the fractionalization of an electron tunneling into a strongly interacting electronic one-dimensional ring. As a complement to transport measurements in quantum wires connected to leads, we propose noninvasive measures involving the magnetic field profile around the ring to probe this fractionalization. In particular, we show that the magnetic field squared produced by the electron and the power that it would induce in a detector exhibit anisotropic profiles that depend on the degree of fractionalization. We contrast true fractionalization with two other scenarios which could mimic it - quantum superposition and classical probabilistic electron insertion. We show that the proposed field-dependent measures and those of the persistent current can distinguish between these three scenarios.

UR - http://www.scopus.com/inward/record.url?scp=84872162455&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84872162455&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.110.026402

DO - 10.1103/PhysRevLett.110.026402

M3 - Article

AN - SCOPUS:84872162455

VL - 110

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 2

M1 - 026402

ER -