Observation of multiple magnetorotons in the fractional quantum Hall effect

B. S. Dennis; L. N. Pfeiffer; K. W. West; Moonsoo Kang; A. Pinczuk

doi:10.1103/PhysRevLett.86.2637

Observation of multiple magnetorotons in the fractional quantum Hall effect

B. S. Dennis, L. N. Pfeiffer, K. W. West, Moonsoo Kang, A. Pinczuk

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Abstract

The energies of critical points in dispersions of collective gap excitations of the fractional quantum Hall (FQH) states at v = 1/3 and 2/5 were measured. Evidence of two magnetoroton minima in the dispersion of gap modes at v = 2/5 and of a single minimum at v = 1/4 was obtained. Key predictions of Chern-Simons and composite fermion theories were confirmed.

Original language	English (US)
Pages (from-to)	2637-2640
Number of pages	4
Journal	Physical review letters
Volume	86
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.86.2637
State	Published - Mar 19 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.86.2637

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title = "Observation of multiple magnetorotons in the fractional quantum Hall effect",

abstract = "The energies of critical points in dispersions of collective gap excitations of the fractional quantum Hall (FQH) states at v = 1/3 and 2/5 were measured. Evidence of two magnetoroton minima in the dispersion of gap modes at v = 2/5 and of a single minimum at v = 1/4 was obtained. Key predictions of Chern-Simons and composite fermion theories were confirmed.",

author = "Dennis, {B. S.} and Pfeiffer, {L. N.} and West, {K. W.} and Moonsoo Kang and A. Pinczuk",

year = "2001",

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doi = "10.1103/PhysRevLett.86.2637",

language = "English (US)",

volume = "86",

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T1 - Observation of multiple magnetorotons in the fractional quantum Hall effect

AU - Dennis, B. S.

AU - Pfeiffer, L. N.

AU - West, K. W.

AU - Kang, Moonsoo

AU - Pinczuk, A.

PY - 2001/3/19

Y1 - 2001/3/19

N2 - The energies of critical points in dispersions of collective gap excitations of the fractional quantum Hall (FQH) states at v = 1/3 and 2/5 were measured. Evidence of two magnetoroton minima in the dispersion of gap modes at v = 2/5 and of a single minimum at v = 1/4 was obtained. Key predictions of Chern-Simons and composite fermion theories were confirmed.

AB - The energies of critical points in dispersions of collective gap excitations of the fractional quantum Hall (FQH) states at v = 1/3 and 2/5 were measured. Evidence of two magnetoroton minima in the dispersion of gap modes at v = 2/5 and of a single minimum at v = 1/4 was obtained. Key predictions of Chern-Simons and composite fermion theories were confirmed.

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DO - 10.1103/PhysRevLett.86.2637

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EP - 2640

JO - Physical review letters

JF - Physical review letters

IS - 12

ER -

Observation of multiple magnetorotons in the fractional quantum Hall effect

Abstract

All Science Journal Classification (ASJC) codes

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