Study on Evolution of Ferromagnetism in Metal Thin Films in Monolayer Regime

单层态金属薄膜铁磁性演化研究

• 批准号: 09440134
• 负责人: KAKIZAKI Akito
• 金额: $ 7.36万
• 依托单位: High Energy Accelerator Research Organization
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09440134/
• 关键词: spin-resolved photoemission; ferromagnetism; magnetic thin film; surface magnetism; electronic structure; 磁気異方性; 放射光; 表面電子状態; スピン電子状態; スピン; 磁気二色性

The aim of this research project is to clarify the origin of the surface magnetism of magnetic thin films in monolayer regime. To this end we have investigated electronic structures of solid surfaces and magnetic thin films grown on magnetic and non-magnetic crystal surfaces by means of spin- and angle-resolved photoelectron spectroscopy.Within the period of the project, we have studied on (1) Ni single crystal surface as one of a typical ferromagnetic surface, (2) Fe films on Co(001) surfaces, which are known to form fcc as well as bcc iron, (3) Co thin films which are expected to reveal film-thickness dependent magnetic anisotropy and (4) some epitaxially grown magnetic thin films such as MnAs, MnSb, etc. As results, we have clarified (1) on Ni spin dependent valence band structures and electron correlation effects appeared there, (2) the thickness dependent structure change of Fe films from fcc to bcc on Co and Cu surfaces and (3) the relationship between structural and electronic properties of Co thin films on Au(111) and their magnetic anisotropy.

本研究的目的是阐明单层磁性薄膜表面磁性的起源。为此，我们用自旋和角分辨光电子能谱研究了固体表面和磁性和非磁性晶体表面上生长的磁性薄膜的电子结构，在本项目期间，我们研究了（1）典型的铁磁表面Ni单晶表面，（2）Co（001）表面Fe薄膜，其已知形成fcc和bcc铁，（3）预期显示膜厚度相关的磁各向异性的Co薄膜，和（4）一些外延生长的磁性薄膜如MnAs、MnSb等。结果，阐明了（1）Ni的自旋相关价带结构和电子相关效应，（2）Fe薄膜在Co和Cu表面由fcc向bcc结构的厚度变化;（3）Co薄膜在Au（111）表面的结构和电子性质与其磁各向异性的关系。

项目成果

M. Sawada: "Analysis of temperature-dependent spin-resolved photoemission of Ni(110) by a model based on a single-particle approximation"J. Electron Spectrosc. Relat. Phonom.. 88-91. 201-204 (1998)

M. Sawada：“通过基于单粒子近似的模型分析 Ni(110) 的温度相关自旋分辨光发射”J。

K. Hayashi: "Growth of Fe films on Rh(001) : a photoemission study"Appl. Surf. Sci.. (印刷予定). (2000)

K. Hayashi：“Fe 薄膜在 Rh(001) 上的生长：光发射研究”Sci..（待印）。

M. Sawada: "Electronic structure of magnetic ultrathin films Co/Au(111) studied by spin-resolved photoelectron spectroscopy"Appl. Surf. Sci.. (印刷予定). (2000)

M. Sawada：“通过自旋分辨光电子能谱研究磁性超薄膜 Co/Au(111) 的电子结构”Sci..（待印）。

A.Kakizaki: "Spin-resolved photemission spectroscopy (invited)"Acta Physica Polonica. 91A. 649-658 (1997)

A.Kakizaki：“自旋分辨光发射光谱（特邀）”Acta Physica Polonica。

A.Kakizaki, K.Ono, K.Tanaka, K.Shimada and T.Sendohda: "Spin-resolved photoemission of valence bank satellites of Ni"Phys. Rev. B. 55. 6678-6681 (1997)

A.Kakizaki、K.Ono、K.Tanaka、K.Shimada 和 T.Sendohda：“Ni 价层卫星的自旋分辨光电子发射”Phys。