Magnetoresistance peak in the ν = 2 Bilayer quantum hall state under tilted magnetic field

Akira Fukuda, Shinsuke Kozumi, Daiju Terasawa, Norio Kumada, Yoshiro Hirayama, Zyun F. Ezawa, Anju Sawada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A bilayer quantum Hall (QH) state is a fascinating system which is constructed by adding the layer degree of freedom, which is represented as "pseudospin", to an ordinary monolayer QH system. As a result of the combination of both spins and pseudospins, the ν = 2 bilayer QH state has revealed a variety of quantum phases. Recently the magnetoresistance peak was found in the ν = 1 bilayer QH state around the commensurate-incommensurate (C-IC) transition point. In this work we have carried out similar quantum magnetotranport experiments in the ν = 2 bilayer QH state while tilting a sample in a magnetic field. Although no anomalous behavior in magnetoresistance was found below the tilting angle of θC = 61°, a peak has been observed above θC. This structure resembles the peak reported in the ν = 1 QH state, and we expect it to be a signal of a phase transition in the ν = 2 QH state. We analyze this anomaly whether it results from the level crossing or the C-IC transition.

Original languageEnglish
Title of host publicationLOW TEMPERATURE PHYSICS
Subtitle of host publication24th International Conference on Low Temperature Physics - LT24
Pages1337-1338
Number of pages2
DOIs
Publication statusPublished - 2006
Externally publishedYes
EventLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States
Duration: 2006 Aug 102006 Oct 17

Publication series

NameAIP Conference Proceedings
Volume850
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
CountryUnited States
CityOrlando, FL
Period06/8/1006/10/17

Keywords

  • Bilayer system
  • Quantum Hall effect

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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