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  1. B100 理学部/理学研究科
  2. B100a 雑誌掲載論文
  3. 学術雑誌

Pattern formation of a step induced by a moving linear source

http://hdl.handle.net/2237/20570
http://hdl.handle.net/2237/20570
7061a4ec-ca91-466e-b2ac-c4ea0ecc7f2e
名前 / ファイル ライセンス アクション
PhysRevB_84_045420.pdf PhysRevB_84_045420.pdf (1.6 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2014-09-26
タイトル
タイトル Pattern formation of a step induced by a moving linear source
言語 en
著者 Sato, Masahide

× Sato, Masahide

WEKO 53665

en Sato, Masahide

Search repository
Uwaha, Makio

× Uwaha, Makio

WEKO 53666

en Uwaha, Makio

Search repository
Hibino, Hiroki

× Hibino, Hiroki

WEKO 53667

en Hibino, Hiroki

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 © 2011 American Physical Society
抄録
内容記述 By means of Monte Carlo simulation with a square lattice model, we study pattern formation of a step induced by a moving linear source of adatoms. Incorporation of adatoms, which are released from a linear source in front of the straight step, causes wandering instability of the step during growth. In contrast to the usual wandering pattern, a treelike step follows the source so that a steadily growing state is realized. Branching occurs frequently in growth toward the [01] direction, while branching is suppressed in growth toward the [11] direction. The characteristic wavelength (period of branches) λ of the pattern is determined by velocity Vp of the linear source and step stiffness β^~ as λ~√ΓlD (lD=Ds/Vp, the diffusion length defined by diffusion coefficient Ds and Vp; Γ, the capillary length proportional to β^~).A comblike step pattern is formed in the [11] growth. The pattern is similar to that observed on a Si(111) surface under Ga deposition. If source velocity Vp is increased, characteristic length λ becomes shorter to follow the source. With Vp above a critical velocity, the step grows at the critical velocity independent of Vp and shows a fractal-like pattern. The critical velocity is related to the fractal dimension of the diffusion-limited aggregation. Similarity of the comblike pattern to a finger pattern observed in graphene growth is also discussed.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 American Physical Society
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1103/PhysRevB.84.045420
ISSN
収録物識別子タイプ PISSN
収録物識別子 1098-0121
書誌情報 en : Physical Review B

巻 84, p. 045420-045420, 発行日 2011-07-11
著者版フラグ
値 publisher
URI
識別子 http://dx.doi.org/10.1103/PhysRevB.84.045420
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/20570
識別子タイプ HDL
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