Magnetoresistance anomalies at level crossing in double layer quantum Hall systems

K. Kodera; A. Endo; K. Kobayashi; S. Katsumoto; Y. Iye

doi:10.1016/j.physe.2003.11.217

Magnetoresistance anomalies at level crossing in double layer quantum Hall systems

K. Kodera, A. Endo, K. Kobayashi, S. Katsumoto, Y. Iye

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

1 Citation (Scopus)

Abstract

We have investigated magnetotransport behavior of a double quantum well system with weak interlayer tunneling. The scaling behavior of the localization property for the Landau levels associated with either layer is in agreement with earlier reports. For the case of Landau level coincidence between the two layers, an anomalous value of the exponent κ≈0.50 is observed. We have observed a peculiar resistance peak at B≃9 T for which the corresponding Hall resistance remains unchanged on both sides of the resistance peak. Hysteretic transition has been found in the region of crossing of the LLs originating from different layers.

Original language	English
Pages (from-to)	64-67
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	22
Issue number	1-3
DOIs	https://doi.org/10.1016/j.physe.2003.11.217
Publication status	Published - Apr 2004
Externally published	Yes
Event	15th International Conference on ELectronic Propreties - Nara, Japan Duration: Jul 14 2003 → Jul 18 2003

Keywords

Double layer
Hysteresis
Integer quantum Hall effect
Localization

ASJC Scopus subject areas

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

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10.1016/j.physe.2003.11.217

Cite this

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title = "Magnetoresistance anomalies at level crossing in double layer quantum Hall systems",

abstract = "We have investigated magnetotransport behavior of a double quantum well system with weak interlayer tunneling. The scaling behavior of the localization property for the Landau levels associated with either layer is in agreement with earlier reports. For the case of Landau level coincidence between the two layers, an anomalous value of the exponent κ≈0.50 is observed. We have observed a peculiar resistance peak at B≃9 T for which the corresponding Hall resistance remains unchanged on both sides of the resistance peak. Hysteretic transition has been found in the region of crossing of the LLs originating from different layers.",

keywords = "Double layer, Hysteresis, Integer quantum Hall effect, Localization",

author = "K. Kodera and A. Endo and K. Kobayashi and S. Katsumoto and Y. Iye",

note = "Funding Information: The work is supported in part by Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sport, Science and Technology (MEXT), Japan.; 15th International Conference on ELectronic Propreties ; Conference date: 14-07-2003 Through 18-07-2003",

year = "2004",

month = apr,

doi = "10.1016/j.physe.2003.11.217",

language = "English",

volume = "22",

pages = "64--67",

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

issn = "1386-9477",

publisher = "Elsevier",

number = "1-3",

}

TY - JOUR

T1 - Magnetoresistance anomalies at level crossing in double layer quantum Hall systems

AU - Kodera, K.

AU - Endo, A.

AU - Kobayashi, K.

AU - Katsumoto, S.

AU - Iye, Y.

N1 - Funding Information: The work is supported in part by Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sport, Science and Technology (MEXT), Japan.

PY - 2004/4

Y1 - 2004/4

N2 - We have investigated magnetotransport behavior of a double quantum well system with weak interlayer tunneling. The scaling behavior of the localization property for the Landau levels associated with either layer is in agreement with earlier reports. For the case of Landau level coincidence between the two layers, an anomalous value of the exponent κ≈0.50 is observed. We have observed a peculiar resistance peak at B≃9 T for which the corresponding Hall resistance remains unchanged on both sides of the resistance peak. Hysteretic transition has been found in the region of crossing of the LLs originating from different layers.

AB - We have investigated magnetotransport behavior of a double quantum well system with weak interlayer tunneling. The scaling behavior of the localization property for the Landau levels associated with either layer is in agreement with earlier reports. For the case of Landau level coincidence between the two layers, an anomalous value of the exponent κ≈0.50 is observed. We have observed a peculiar resistance peak at B≃9 T for which the corresponding Hall resistance remains unchanged on both sides of the resistance peak. Hysteretic transition has been found in the region of crossing of the LLs originating from different layers.

KW - Double layer

KW - Hysteresis

KW - Integer quantum Hall effect

KW - Localization

UR - http://www.scopus.com/inward/record.url?scp=1842684871&partnerID=8YFLogxK

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U2 - 10.1016/j.physe.2003.11.217

DO - 10.1016/j.physe.2003.11.217

M3 - Conference article

AN - SCOPUS:1842684871

SN - 1386-9477

VL - 22

SP - 64

EP - 67

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-3

T2 - 15th International Conference on ELectronic Propreties

Y2 - 14 July 2003 through 18 July 2003

ER -

Magnetoresistance anomalies at level crossing in double layer quantum Hall systems

Abstract

Keywords

ASJC Scopus subject areas

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