Evidence for skyrmion crystallization from NMR relaxation experiments

G. Gervais; H. L. Stormer; D. C. Tsui; P. L. Kuhns; W. G. Moulton; A. P. Reyes; L. N. Pfeiffer; K. W. Baldwin; K. W. West

doi:10.1103/PhysRevLett.94.196803

Evidence for skyrmion crystallization from NMR relaxation experiments

G. Gervais, H. L. Stormer, D. C. Tsui, P. L. Kuhns, W. G. Moulton, A. P. Reyes, L. N. Pfeiffer, K. W. Baldwin, K. W. West

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Abstract

A resistively detected NMR technique was used to probe the two-dimensional electron gas in a GaAs/AlGaAs quantum well. The spin-lattice relaxation rate (1/T1) was extracted at near complete filling of the first Landau level by electrons. The nuclear spin of As75 is found to relax much more efficiently with T→0 and when a well developed quantum Hall state with Rxx 0 occurs. The data show a remarkable correlation between the nuclear spin relaxation and localization. This suggests that the magnetic ground state near complete filling of the first Landau level may contain a lattice of topological spin texture, i.e., a Skyrmion crystal.

Original language	English (US)
Article number	196803
Journal	Physical review letters
Volume	94
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.94.196803
State	Published - May 20 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.94.196803

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title = "Evidence for skyrmion crystallization from NMR relaxation experiments",

abstract = "A resistively detected NMR technique was used to probe the two-dimensional electron gas in a GaAs/AlGaAs quantum well. The spin-lattice relaxation rate (1/T1) was extracted at near complete filling of the first Landau level by electrons. The nuclear spin of As75 is found to relax much more efficiently with T→0 and when a well developed quantum Hall state with Rxx 0 occurs. The data show a remarkable correlation between the nuclear spin relaxation and localization. This suggests that the magnetic ground state near complete filling of the first Landau level may contain a lattice of topological spin texture, i.e., a Skyrmion crystal.",

author = "G. Gervais and Stormer, {H. L.} and Tsui, {D. C.} and Kuhns, {P. L.} and Moulton, {W. G.} and Reyes, {A. P.} and Pfeiffer, {L. N.} and Baldwin, {K. W.} and West, {K. W.}",

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T1 - Evidence for skyrmion crystallization from NMR relaxation experiments

AU - Gervais, G.

AU - Stormer, H. L.

AU - Tsui, D. C.

AU - Kuhns, P. L.

AU - Moulton, W. G.

AU - Reyes, A. P.

AU - Pfeiffer, L. N.

AU - Baldwin, K. W.

AU - West, K. W.

PY - 2005/5/20

Y1 - 2005/5/20

N2 - A resistively detected NMR technique was used to probe the two-dimensional electron gas in a GaAs/AlGaAs quantum well. The spin-lattice relaxation rate (1/T1) was extracted at near complete filling of the first Landau level by electrons. The nuclear spin of As75 is found to relax much more efficiently with T→0 and when a well developed quantum Hall state with Rxx 0 occurs. The data show a remarkable correlation between the nuclear spin relaxation and localization. This suggests that the magnetic ground state near complete filling of the first Landau level may contain a lattice of topological spin texture, i.e., a Skyrmion crystal.

AB - A resistively detected NMR technique was used to probe the two-dimensional electron gas in a GaAs/AlGaAs quantum well. The spin-lattice relaxation rate (1/T1) was extracted at near complete filling of the first Landau level by electrons. The nuclear spin of As75 is found to relax much more efficiently with T→0 and when a well developed quantum Hall state with Rxx 0 occurs. The data show a remarkable correlation between the nuclear spin relaxation and localization. This suggests that the magnetic ground state near complete filling of the first Landau level may contain a lattice of topological spin texture, i.e., a Skyrmion crystal.

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Evidence for skyrmion crystallization from NMR relaxation experiments

Abstract

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