Hyperfine-controlled domain-wall motion observed in real space and time

John N. Moore; Junichiro Hayakawa; Takaaki Mano; Takeshi Noda; Go Yusa

doi:10.1103/PhysRevB.94.201408

Hyperfine-controlled domain-wall motion observed in real space and time

John N. Moore, Junichiro Hayakawa, Takaaki Mano, Takeshi Noda, Go Yusa

SCI - Physics

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

3 Citations (Scopus)

Abstract

We perform real-space imaging of propagating magnetic domains in the fractional quantum Hall system using spin-sensitive photoluminescence microscopy. The propagation is continuous and proceeds in the direction of the conventional current, i.e., opposite to the electron flow direction. The mechanism of motion is shown to be connected to polarized nuclear spins around the domain walls. The propagation velocity increases when nuclei are depolarized, and decreases when the source-drain current generating this nuclear polarization is increased. We discuss how these phenomena may arise from spin interactions along the domain walls.

Original language	English
Article number	201408
Journal	Physical Review B
Volume	94
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevB.94.201408
Publication status	Published - 2016 Nov 15

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Hyperfine-controlled domain-wall motion observed in real space and time",

abstract = "We perform real-space imaging of propagating magnetic domains in the fractional quantum Hall system using spin-sensitive photoluminescence microscopy. The propagation is continuous and proceeds in the direction of the conventional current, i.e., opposite to the electron flow direction. The mechanism of motion is shown to be connected to polarized nuclear spins around the domain walls. The propagation velocity increases when nuclei are depolarized, and decreases when the source-drain current generating this nuclear polarization is increased. We discuss how these phenomena may arise from spin interactions along the domain walls.",

author = "Moore, {John N.} and Junichiro Hayakawa and Takaaki Mano and Takeshi Noda and Go Yusa",

note = "Funding Information: The authors are grateful to N. Shibata, K. Muraki, and T. Fujisawa for discussions, and to Y. Hirayama and M. Matsuura for experimental support. This work was supported by the Mitsubishi Foundation and a Grant-in-Aid for Scientific Research (No. 24241039) from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan. J.N.M. was supported by a Grant-in-Aid from MEXT and the Marubun Research Promotion Foundation. J. H. was supported by a Grant in-Aid from the Tohoku University International Advanced Research and Education Organization.",

year = "2016",

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doi = "10.1103/PhysRevB.94.201408",

language = "English",

volume = "94",

journal = "Physical Review B",

issn = "2469-9950",

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T1 - Hyperfine-controlled domain-wall motion observed in real space and time

AU - Moore, John N.

AU - Hayakawa, Junichiro

AU - Mano, Takaaki

AU - Noda, Takeshi

AU - Yusa, Go

N1 - Funding Information: The authors are grateful to N. Shibata, K. Muraki, and T. Fujisawa for discussions, and to Y. Hirayama and M. Matsuura for experimental support. This work was supported by the Mitsubishi Foundation and a Grant-in-Aid for Scientific Research (No. 24241039) from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan. J.N.M. was supported by a Grant-in-Aid from MEXT and the Marubun Research Promotion Foundation. J. H. was supported by a Grant in-Aid from the Tohoku University International Advanced Research and Education Organization.

PY - 2016/11/15

Y1 - 2016/11/15

N2 - We perform real-space imaging of propagating magnetic domains in the fractional quantum Hall system using spin-sensitive photoluminescence microscopy. The propagation is continuous and proceeds in the direction of the conventional current, i.e., opposite to the electron flow direction. The mechanism of motion is shown to be connected to polarized nuclear spins around the domain walls. The propagation velocity increases when nuclei are depolarized, and decreases when the source-drain current generating this nuclear polarization is increased. We discuss how these phenomena may arise from spin interactions along the domain walls.

AB - We perform real-space imaging of propagating magnetic domains in the fractional quantum Hall system using spin-sensitive photoluminescence microscopy. The propagation is continuous and proceeds in the direction of the conventional current, i.e., opposite to the electron flow direction. The mechanism of motion is shown to be connected to polarized nuclear spins around the domain walls. The propagation velocity increases when nuclei are depolarized, and decreases when the source-drain current generating this nuclear polarization is increased. We discuss how these phenomena may arise from spin interactions along the domain walls.

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