Charge excitation and transport in pseudospin quantum Hall ferromagnets

Koji Muraki; Tadashi Saku; Yoshiro Hirayama

doi:10.1016/S1386-9477(02)01035-4

Charge excitation and transport in pseudospin quantum Hall ferromagnets

Koji Muraki, Tadashi Saku, Yoshiro Hirayama

Center for Science and Innovation in Spintronics (CSIS)

Nippon Telegraph & Telephone

Research output: Contribution to journal › Conference article › peer-review

Abstract

Studies on pseudospin quantum Hall ferromagnets involving the N = 1 Landau level (LL) of the symmetric state and the N = 0 LL of the antisymmetric state in strongly-coupled double quantum wells are presented. Measurements of the charge excitation gap for ν = 4 (3 and 5) reveal easy-axis (easy-plane) anisotropy. Resistance spikes observed for ν = 4 are ascribed to transport along domain walls. We also discuss the effects of potential asymmetry.

Original language	English
Pages (from-to)	107-108
Number of pages	2
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	18
Issue number	1-3
DOIs	https://doi.org/10.1016/S1386-9477(02)01035-4
Publication status	Published - 2003 May
Event	23rd International Conference on Low Temperature Physics - Hiroshima, Japan Duration: 2002 Aug 20 → 2002 Aug 27

Keywords

Domain wall
Pseudospin
Quantum Hall effect
Quantum Hall ferromagnet

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10.1016/S1386-9477(02)01035-4

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title = "Charge excitation and transport in pseudospin quantum Hall ferromagnets",

abstract = "Studies on pseudospin quantum Hall ferromagnets involving the N = 1 Landau level (LL) of the symmetric state and the N = 0 LL of the antisymmetric state in strongly-coupled double quantum wells are presented. Measurements of the charge excitation gap for ν = 4 (3 and 5) reveal easy-axis (easy-plane) anisotropy. Resistance spikes observed for ν = 4 are ascribed to transport along domain walls. We also discuss the effects of potential asymmetry.",

keywords = "Domain wall, Pseudospin, Quantum Hall effect, Quantum Hall ferromagnet",

author = "Koji Muraki and Tadashi Saku and Yoshiro Hirayama",

year = "2003",

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doi = "10.1016/S1386-9477(02)01035-4",

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

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TY - JOUR

T1 - Charge excitation and transport in pseudospin quantum Hall ferromagnets

AU - Muraki, Koji

AU - Saku, Tadashi

AU - Hirayama, Yoshiro

PY - 2003/5

Y1 - 2003/5

N2 - Studies on pseudospin quantum Hall ferromagnets involving the N = 1 Landau level (LL) of the symmetric state and the N = 0 LL of the antisymmetric state in strongly-coupled double quantum wells are presented. Measurements of the charge excitation gap for ν = 4 (3 and 5) reveal easy-axis (easy-plane) anisotropy. Resistance spikes observed for ν = 4 are ascribed to transport along domain walls. We also discuss the effects of potential asymmetry.

AB - Studies on pseudospin quantum Hall ferromagnets involving the N = 1 Landau level (LL) of the symmetric state and the N = 0 LL of the antisymmetric state in strongly-coupled double quantum wells are presented. Measurements of the charge excitation gap for ν = 4 (3 and 5) reveal easy-axis (easy-plane) anisotropy. Resistance spikes observed for ν = 4 are ascribed to transport along domain walls. We also discuss the effects of potential asymmetry.

KW - Domain wall

KW - Pseudospin

KW - Quantum Hall effect

KW - Quantum Hall ferromagnet

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U2 - 10.1016/S1386-9477(02)01035-4

DO - 10.1016/S1386-9477(02)01035-4

M3 - Conference article

AN - SCOPUS:0038518621

SN - 1386-9477

VL - 18

SP - 107

EP - 108

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-3

T2 - 23rd International Conference on Low Temperature Physics

Y2 - 20 August 2002 through 27 August 2002

ER -

Charge excitation and transport in pseudospin quantum Hall ferromagnets

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Keywords

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