このエントリーをはてなブックマークに追加
ID 51062
本文ファイル
著者
Tajima, Shingo
Ebisuoka, Ryoya
Watanabe, Kenji
Taniguchi, Takashi
Yagi, Ryuta 大学院先進理工系科学研究科 広大研究者総覧
抄録(英)
Ballistic transport was studied in a multiple-band system consisting of an antidot lattice of AB-stacked trilayer graphene. The low temperature magnetoresistance showed commensurability peaks arising from matching of the antidot lattice period and radius of cyclotron orbits for each mono- and bilayer-like band in AB stacked trilayer graphene. The commensurability peak of the monolayer-like band appeared at a lower magnetic field than that of the bilayer-like band, which reflects the fact that the Fermi surface of the bilayer-like band is larger than that of monolayer-like band. Rotation of the antidot lattice relative to the crystallographic axes of graphene resulted in anisotropic magnetoresistance, which reflects the trigonally warped Fermi surface of the bilayer-like band. Numerical simulations of magnetoresistance that assumed ballistic transport in the mono- and bilayer-like bands approximately reproduced the observed magnetoresistance features. It was found that the monolayer-like band significantly contributes to the conductivity even though its carrier density is an order smaller than that of the bilayer-like band. These results indicate that ballistic transport experiments could be used for studying the anisotropic band structure of multiple-band systems.
内容記述
This work was supported by a grant KAKENHI No. 25107003 from MEXT Japan.
掲載誌名
Journal of the Physical Society of Japan
89巻
4号
開始ページ
044703-1
終了ページ
044703-8
出版年月日
2020-03-09
出版者
The Physical Society of Japan
ISSN
0031-9015
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2020 The Physical Society of Japan
This is not the published version. Please cite only the published version. この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
関連情報URL
部局名
先進理工系科学研究科