Fractionally charged skyrmions in fractional quantum Hall effect

Balram, Ajit C.; Wurstbauer, U.; Wójs, A.; Pinczuk, A.; Jain, J. K.

doi:10.1038/ncomms9981

Title: Fractionally charged skyrmions in fractional quantum Hall effect

Journal Article · Thu Nov 26 00:00:00 EST 2015 · Nature Communications

DOI:https://doi.org/10.1038/ncomms9981· OSTI ID:1239802

Balram, Ajit C. ^[1]; Wurstbauer, U. ^[2]; Wójs, A. ^[3]; Pinczuk, A. ^[4]; Jain, J. K. ^[1]

Pennsylvania State Univ., State College, PA (United States)
Technical Univ. of Munchen (Germany); Nanosystems Initiative Munich (NIM) (Germany)
Univ. of Wroclaw (Poland)
Columbia Univ., New York, NY (United States)

The fractional quantum Hall effect has inspired searches for exotic emergent topological particles, such as fractionally charged excitations, composite fermions, abelian and nonabelian anyons and Majorana fermions. Fractionally charged skyrmions, which support both topological charge and topological vortex-like spin structure, have also been predicted to occur in the vicinity of 1/3 filling of the lowest Landau level. The fractional skyrmions, however, are anticipated to be exceedingly fragile, suppressed by very small Zeeman energies. Here we show that, slightly away from 1/3 filling, the smallest manifestations of the fractional skyrmion exist in the excitation spectrum for a broad range of Zeeman energies, and appear in resonant inelastic light scattering experiments as well-defined resonances slightly below the long wavelength spin wave mode. The spectroscopy of these exotic bound states serves as a sensitive tool for investigating the residual interaction between composite fermions, responsible for delicate new fractional quantum Hall states in this filling factor region.

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Research Organization:: Penn State University, University Park, PA (United States). Department of Physics

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0005042

OSTI ID:: 1239802

Journal Information:: Nature Communications, Vol. 6; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 7 works

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Cited By (2)

Interacting composite fermions: Nature of the 4/5, 5/7, 6/7, and 6/17 fractional quantum Hall states Balram, Ajit C. Physical Review B, Vol. 94, Issue 16 https://doi.org/10.1103/physrevb.94.165303	journal	October 2016
Complete spin phase diagram of the fractional quantum Hall liquid Yoo, H. M.; Baldwin, K. W.; West, K. arXiv https://doi.org/10.48550/arxiv.1910.01109	text	January 2019

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