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Title: Parity effect of bipolar quantum Hall edge transport around graphene antidots
Authors: Matsuo, Sadashige
Nakaharai, Shu
Komatsu, Katsuyoshi
Tsukagoshi, Kazuhito
Moriyama, Takahiro  kyouindb  KAKEN_id
Ono, Teruo  kyouindb  KAKEN_id
Kobayashi, Kensuke
Author's alias: 松尾, 貞茂
塚越, 一仁
森山, 貴広
小野, 輝男
小林, 研介
Issue Date: 30-Jun-2015
Publisher: Nature Publishing Group
Journal title: Scientific Reports
Volume: 5
Thesis number: 11723
Abstract: Parity effect, which means that even-odd property of an integer physical parameter results in an essential difference, ubiquitously appears and enables us to grasp its physical essence as the microscopic mechanism is less significant in coarse graining. Here we report a new parity effect of quantum Hall edge transport in graphene antidot devices with pn junctions (PNJs). We found and experimentally verified that the bipolar quantum Hall edge transport is drastically affected by the parity of the number of PNJs. This parity effect is universal in bipolar quantum Hall edge transport of not only graphene but also massless Dirac electron systems. These results offer a promising way to design electron interferometers in graphene.
Description: 接合数の偶数・奇数で電流の流れが全く異なる新しい現象 -注目物質「グラフェン」におけるパリティ効果を世界で初めて確立-. 京都大学プレスリリース. 2015-07-01.
Rights: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
URI: http://hdl.handle.net/2433/212054
DOI(Published Version): 10.1038/srep11723
PubMed ID: 26122468
Related Link: http://www.kyoto-u.ac.jp/ja/research/research_results/2015/150701_2.html
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