Electronic Properties of Two-Dimensional Nicrocluster Arrays

二维微团簇阵列的电子特性

• 批准号: 01460025
• 负责人: KASUYA Atsuo
• 金额: $ 3.84万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-01460025/
• 关键词: Microcluster; Laser Ablation; Cluster Assembly; Graphite; Small Particle; Cluster Adsorption

Microclusters of Au, C, Sb, Bi, and Te are deposited under a monolayer coverage on the c-plane of highly oriented pyrolytic graphite by excimer laser ablation or by ordinary thermal vaporization of constituent elements in vacuum and in He gas.Deposited surfaces are examined by a scanning tunneling microscope (Nanoscope II) operated in air. Microclusters are adsorbed in a variety of sizes and shapes. Atomic images of clusters are observed for small clusters consisting of less than a hundred atoms. For depositing carbon by laser ablation, some of small clusters are adsorbed on the substrate in single layers. Under He gas of around 50 torr, they are dominantly stacked in three-dimension on the substrate, even for those consisting of only several atoms. Although most of clusters are distributed randomly over the surface of substrate, they tend to be adsorbed around crystal defects such as along a step or on a terrace.These clusters are of similar sizes as well as shapes and are aligned in nearly an equal separation so that they form a regular arrangement of size selected clusters. Such arrays are observed for carbon clusters by laser ablation, and for Au, C, Sb, and Te clusters by thermal vaporization.

通过准分子激光烧蚀或在真空和He气体中对组成元素进行普通热汽化，在高取向热解石墨的C平面上沉积了Au、C、Sb、Bi和Te的微团簇。在空气中使用扫描隧道显微镜（纳米显微镜II）检查沉积表面。微团簇被吸附成各种大小和形状。对于少于100个原子组成的小团簇，可以观察到团簇的原子图像。在激光烧蚀沉积碳的过程中，一些小簇以单层形式吸附在基体上。在大约50托的He气体下，它们主要以三维形式堆积在衬底上，即使对于那些只有几个原子的衬底也是如此。虽然大多数团簇在衬底表面随机分布，但它们往往吸附在晶体缺陷周围，如沿台阶或台阶。这些星团具有相似的大小和形状，并以几乎相等的间隔排列，从而形成大小选择星团的规则排列。通过激光烧蚀可以观察到碳团簇，通过热蒸发可以观察到Au、C、Sb和Te团簇。

项目成果

粕谷厚生,仁科雄一郎: "マイクロクラスタ-の具体的作成法" 日本物理学会誌. 44. 231-234 (1989)

Kosei Kasuya，Yuichiro Nishina：“创建微团簇的具体方法”日本物理学会杂志 44. 231-234 (1989)。

粕谷 厚生,仁科 雄一郎: "マイクロクラスタ-の具体的作成法" 日本物理学会誌. 44. 231-234 (1989)

Kosei Kasuya，Yuichiro Nishina：“创建微团簇的具体方法”日本物理学会杂志 44. 231-234 (1989)。

O. Eryu, K. Murakami, K. Masuda, A. Kasuya and Y. Nishina: "Dynamics of Laser-ablated particles from high Tc superconductor Yba_2Cu_3O_y" Applied Physics Letters. 54. 2716-2719 (1989)

O. Eryu、K. Murakami、K. Masuda、A. Kasuya 和 Y. Nishina：“高 Tc 超导体 Yba_2Cu_3O_y 激光烧蚀粒子的动力学”应用物理快报。

A. Kasuya and Y. Nishina: "Dynamics of laser ablation" Proc. special symposium on atom cluster. 1 (1990)

A. Kasuya 和 Y. Nishina：“激光烧蚀动力学”Proc。

粕谷 厚生,仁科 雄一郎: "Spece/Time Resolved Analygis In μm/msec Scale of Laser Beam,Solid Surface Interaction In Group IV Elements" Materials Research Society Symposia Proleedings. 129. 365-370 (1989)

Kosei Kasuya、Yuichiro Nishina：“激光束微米/毫秒级的规格/时间解析分析，第四族元素中的固体表面相互作用”材料研究协会研讨会论文集 129. 365-370 (1989)。