Stability of soliton lattice phase in the ν = 1 bilayer quantum Hall state under tilted magnetic fields

D. Terasawa; A. Fukuda; S. Kozumi; A. Sawada; Z. F. Ezawa; N. Kumada; Y. Hirayama

doi:10.1016/j.physe.2006.02.019

Stability of soliton lattice phase in the ν = 1 bilayer quantum Hall state under tilted magnetic fields

D. Terasawa, A. Fukuda, S. Kozumi, A. Sawada, Z. F. Ezawa, N. Kumada, Y. Hirayama

Center for Science and Innovation in Spintronics (CSIS)

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

1 Citation (Scopus)

Abstract

The bilayer quantum Hall (QH) state at the filling factor ν = 1 shows various fascinating quantum phenomena due to the layer degree of freedom called 'pseudospin'. We report an experimental evidence of the soliton lattice (SL) phase, which is a domain structure of pseudospin, by the appearance of a local maximum of magnetoresistance near the ν = 1 QH state. We investigate the stability of the SL phase by changing B_∥ and the total electron density n_T. Detailed magnetotransport measurements under tilted magnetic fields were carried out to obtain a B_∥-n_T plane phase diagram containing the C, IC and SL phases. We found the SL phase is only stable at low n_T region. Namely, the C-SL-IC phase transition occurs only at low n_T region as B_∥ increases. On the contrary, the C-IC phase transition directly occurs without passing through the SL phase at high n_T region.

Original language	English
Pages (from-to)	81-84
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.2006.02.019
Publication status	Published - 2006 Aug

Keywords

Domain wall
Phase transition
Quantum Hall effect
Soliton lattice

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10.1016/j.physe.2006.02.019

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@article{e42cc0688ff64502953af95637d2f9bf,

title = "Stability of soliton lattice phase in the ν = 1 bilayer quantum Hall state under tilted magnetic fields",

abstract = "The bilayer quantum Hall (QH) state at the filling factor ν = 1 shows various fascinating quantum phenomena due to the layer degree of freedom called 'pseudospin'. We report an experimental evidence of the soliton lattice (SL) phase, which is a domain structure of pseudospin, by the appearance of a local maximum of magnetoresistance near the ν = 1 QH state. We investigate the stability of the SL phase by changing B∥ and the total electron density nT. Detailed magnetotransport measurements under tilted magnetic fields were carried out to obtain a B∥-nT plane phase diagram containing the C, IC and SL phases. We found the SL phase is only stable at low nT region. Namely, the C-SL-IC phase transition occurs only at low nT region as B∥ increases. On the contrary, the C-IC phase transition directly occurs without passing through the SL phase at high nT region.",

keywords = "Domain wall, Phase transition, Quantum Hall effect, Soliton lattice",

author = "D. Terasawa and A. Fukuda and S. Kozumi and A. Sawada and Ezawa, {Z. F.} and N. Kumada and Y. Hirayama",

note = "Funding Information: We acknowledge T. Saku for growing the sample used in this work. We are grateful to C. B. Hanna and K. Muraki for many fruitful discussions. This research was supported in part by Grants-in-Aid for the Scientific Research and Technology of Japan (Nos. 14010839,14340088) and a 21st Century COE Program Grant of the International COE of Exploring New Science Bridging Particle-Matter Hierarchy from the Ministry of Education, Culture, Sports, Science. A part of this work was performed at the clean room facility of the Center for Interdisciplinary Research of Tohoku University. One of the author (D.T.) is grateful to Japan Society for Promotion of Science.",

year = "2006",

month = aug,

doi = "10.1016/j.physe.2006.02.019",

language = "English",

volume = "34",

pages = "81--84",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

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TY - JOUR

T1 - Stability of soliton lattice phase in the ν = 1 bilayer quantum Hall state under tilted magnetic fields

AU - Terasawa, D.

AU - Fukuda, A.

AU - Kozumi, S.

AU - Sawada, A.

AU - Ezawa, Z. F.

AU - Kumada, N.

AU - Hirayama, Y.

N1 - Funding Information: We acknowledge T. Saku for growing the sample used in this work. We are grateful to C. B. Hanna and K. Muraki for many fruitful discussions. This research was supported in part by Grants-in-Aid for the Scientific Research and Technology of Japan (Nos. 14010839,14340088) and a 21st Century COE Program Grant of the International COE of Exploring New Science Bridging Particle-Matter Hierarchy from the Ministry of Education, Culture, Sports, Science. A part of this work was performed at the clean room facility of the Center for Interdisciplinary Research of Tohoku University. One of the author (D.T.) is grateful to Japan Society for Promotion of Science.

PY - 2006/8

Y1 - 2006/8

N2 - The bilayer quantum Hall (QH) state at the filling factor ν = 1 shows various fascinating quantum phenomena due to the layer degree of freedom called 'pseudospin'. We report an experimental evidence of the soliton lattice (SL) phase, which is a domain structure of pseudospin, by the appearance of a local maximum of magnetoresistance near the ν = 1 QH state. We investigate the stability of the SL phase by changing B∥ and the total electron density nT. Detailed magnetotransport measurements under tilted magnetic fields were carried out to obtain a B∥-nT plane phase diagram containing the C, IC and SL phases. We found the SL phase is only stable at low nT region. Namely, the C-SL-IC phase transition occurs only at low nT region as B∥ increases. On the contrary, the C-IC phase transition directly occurs without passing through the SL phase at high nT region.

AB - The bilayer quantum Hall (QH) state at the filling factor ν = 1 shows various fascinating quantum phenomena due to the layer degree of freedom called 'pseudospin'. We report an experimental evidence of the soliton lattice (SL) phase, which is a domain structure of pseudospin, by the appearance of a local maximum of magnetoresistance near the ν = 1 QH state. We investigate the stability of the SL phase by changing B∥ and the total electron density nT. Detailed magnetotransport measurements under tilted magnetic fields were carried out to obtain a B∥-nT plane phase diagram containing the C, IC and SL phases. We found the SL phase is only stable at low nT region. Namely, the C-SL-IC phase transition occurs only at low nT region as B∥ increases. On the contrary, the C-IC phase transition directly occurs without passing through the SL phase at high nT region.

KW - Domain wall

KW - Phase transition

KW - Quantum Hall effect

KW - Soliton lattice

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JF - Physica E: Low-Dimensional Systems and Nanostructures

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ER -

Stability of soliton lattice phase in the ν = 1 bilayer quantum Hall state under tilted magnetic fields

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Keywords

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