Anisotropic magnetotransport near the ν = frac(2, 3) quantum Hall state

Masayuki Morino; Kazuki Iwata; Michiro Suzuki; Akira Fukuda; Anju Sawada; Zyun F. Ezawa; Norio Kumada; Yoshiro Hirayama

doi:10.1016/j.physe.2006.03.123

Anisotropic magnetotransport near the ν = frac(2, 3) quantum Hall state

Masayuki Morino, Kazuki Iwata, Michiro Suzuki, Akira Fukuda, Anju Sawada, Zyun F. Ezawa, Norio Kumada, Yoshiro Hirayama

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

Abstract

We report experimental results on an anisotropic magnetotransport of a bilayer electron system at the Landau level filling factor ν = frac(2, 3) under tilted magnetic fields. We find that the magnetoresistance changes when the direction of applied in-plane field B_∥ is changed with respect to the direction of the current while keeping the strength of B_∥ fixed. This anisotropy only appears at the ground state where interlayer electron tunneling is permitted. Therefore, this phenomenon indicates that bilayer systems at ν = frac(2, 3) with interlayer tunneling inherently have a dissipation mechanism related to the direction of the in-plane field.

Original language	English
Pages (from-to)	152-155
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	34
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physe.2006.03.123
Publication status	Published - 2006 Aug
Externally published	Yes

Keywords

Bilayer systems
Magnetoresistance
Quantum Hall state
Tilted magnetic fields

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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Anisotropic magnetotransport near the ν = frac(2, 3) quantum Hall state. / Morino, Masayuki; Iwata, Kazuki; Suzuki, Michiro; Fukuda, Akira; Sawada, Anju; Ezawa, Zyun F.; Kumada, Norio; Hirayama, Yoshiro.

In: Physica E: Low-Dimensional Systems and Nanostructures, Vol. 34, No. 1-2, 08.2006, p. 152-155.

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

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title = "Anisotropic magnetotransport near the ν = frac(2, 3) quantum Hall state",

abstract = "We report experimental results on an anisotropic magnetotransport of a bilayer electron system at the Landau level filling factor ν = frac(2, 3) under tilted magnetic fields. We find that the magnetoresistance changes when the direction of applied in-plane field B∥ is changed with respect to the direction of the current while keeping the strength of B∥ fixed. This anisotropy only appears at the ground state where interlayer electron tunneling is permitted. Therefore, this phenomenon indicates that bilayer systems at ν = frac(2, 3) with interlayer tunneling inherently have a dissipation mechanism related to the direction of the in-plane field.",

keywords = "Bilayer systems, Magnetoresistance, Quantum Hall state, Tilted magnetic fields",

author = "Masayuki Morino and Kazuki Iwata and Michiro Suzuki and Akira Fukuda and Anju Sawada and Ezawa, {Zyun F.} and Norio Kumada and Yoshiro Hirayama",

note = "Funding Information: The authors are grateful to T. Saku for growing the high-quality bilayer system. This work was supported in part by Grants-in-Aid for the Scientific Research (No. 14340088) and by a 21st Century COE Program Grant of the International COE of “Exploring New Science Bridging Particle-Matter Hierarchy” from Ministry of Education, Culture, Sports, Science and Technology.",

year = "2006",

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doi = "10.1016/j.physe.2006.03.123",

language = "English",

volume = "34",

pages = "152--155",

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T1 - Anisotropic magnetotransport near the ν = frac(2, 3) quantum Hall state

AU - Morino, Masayuki

AU - Iwata, Kazuki

AU - Suzuki, Michiro

AU - Fukuda, Akira

AU - Sawada, Anju

AU - Ezawa, Zyun F.

AU - Kumada, Norio

AU - Hirayama, Yoshiro

N1 - Funding Information: The authors are grateful to T. Saku for growing the high-quality bilayer system. This work was supported in part by Grants-in-Aid for the Scientific Research (No. 14340088) and by a 21st Century COE Program Grant of the International COE of “Exploring New Science Bridging Particle-Matter Hierarchy” from Ministry of Education, Culture, Sports, Science and Technology.

PY - 2006/8

Y1 - 2006/8

N2 - We report experimental results on an anisotropic magnetotransport of a bilayer electron system at the Landau level filling factor ν = frac(2, 3) under tilted magnetic fields. We find that the magnetoresistance changes when the direction of applied in-plane field B∥ is changed with respect to the direction of the current while keeping the strength of B∥ fixed. This anisotropy only appears at the ground state where interlayer electron tunneling is permitted. Therefore, this phenomenon indicates that bilayer systems at ν = frac(2, 3) with interlayer tunneling inherently have a dissipation mechanism related to the direction of the in-plane field.

AB - We report experimental results on an anisotropic magnetotransport of a bilayer electron system at the Landau level filling factor ν = frac(2, 3) under tilted magnetic fields. We find that the magnetoresistance changes when the direction of applied in-plane field B∥ is changed with respect to the direction of the current while keeping the strength of B∥ fixed. This anisotropy only appears at the ground state where interlayer electron tunneling is permitted. Therefore, this phenomenon indicates that bilayer systems at ν = frac(2, 3) with interlayer tunneling inherently have a dissipation mechanism related to the direction of the in-plane field.

KW - Bilayer systems

KW - Magnetoresistance

KW - Quantum Hall state

KW - Tilted magnetic fields

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DO - 10.1016/j.physe.2006.03.123

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EP - 155

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

SN - 1386-9477

IS - 1-2

ER -

Anisotropic magnetotransport near the ν = frac(2, 3) quantum Hall state

Abstract

Keywords

ASJC Scopus subject areas

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