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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 林敏聰(Minn-Tsong Lin) | |
| dc.contributor.author | Wang-Jung Hsueh | en |
| dc.contributor.author | 薛婉容 | zh_TW |
| dc.date.accessioned | 2021-06-08T04:19:24Z | - |
| dc.date.copyright | 2010-08-16 | |
| dc.date.issued | 2010 | |
| dc.date.submitted | 2010-07-21 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/22505 | - |
| dc.description.abstract | 有機的錳酞花青分子可以成功地被鍍在銅(111)以及鈷/銅(111)的平台上，且由掃描穿隧電子顯微鏡量測的表面形貌所證實。除此之外，在錳酞花青/鈷/銅(111)系統中，所有的錳酞花青分子均可被鈷的奈米島狀結構所捕捉而非銅的基板。再者，利用低溫自旋偏極化掃描穿隧電子顯微鏡及光譜，不僅是島狀的鈷，錳酞花青分子的自旋偏極化能態也可在4.5Ｋ被解析。而且錳酞花青分子磁性不對稱的主要貢獻來自錳酞花青分子在費米能階附近的自旋偏極化吸收態。 | zh_TW |
| dc.description.abstract | Organic Mn-phthalocyanine (MnPc) molecules are successfully deposited on the Cu(111) and Co/Cu(111) templates, and this can be verified from STM morphology. In addition, for MnPc/Co/Cu(111) system, all of the MnPc molecules are trapped on the surface of the Co nanoislands instead of Cu substrate. Furthermore, by using spin-polarized scanning tunneling microscopy and spectroscopy, the spin-polarized states of not only Co islands but also MnPc molecules have been resolved at 4.5K. And the major contribution of magnetic asymmetry of MnPc molecules comes from the spin-polarized absorption state of MnPc molecules near the Fermi energy. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-08T04:19:24Z (GMT). No. of bitstreams: 1 ntu-99-R97222045-1.pdf: 5874857 bytes, checksum: badefc1489ccf2a8a9ee552484e9553b (MD5) Previous issue date: 2010 | en |
| dc.description.tableofcontents | Abstract iii
1 Introduction 1 2 Basic Concept 4 2.1 Mn-phthalocyanine (MnPc)molecule . . . . . . . . . . . . . . . . . . 4 2.2 Co /Cu(111) system . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Surface diffusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3 Experimental Apparatus 14 3.1 Ultrahigh Vacuum (UHV) System . . . . . . . . . . . . . . . . . . . . 14 3.1.1 Sputtering Gun . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.1.2 Annealing Device . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.1.3 Molecular Beam Epitaxy (MBE) Gun . . . . . . . . . . . . . . 18 3.1.4 Organic Molecule Deposition Gun . . . . . . . . . . . . . . . . 18 3.1.5 Low-Energy Electron Diffraction (LEED) and IV-LEED . . . 19 3.1.6 Cylindrical Mirror Analyzer (CMA) . . . . . . . . . . . . . . . 24 3.2 Scanning Tunneling Microscopy and Spectroscopy . . . . . . . . . . . 25 3.3 Spin-polarized Scanning Tunneling Microscopy and Spectroscopy . . . 29 4 Morphology and Property of MnPc/Cu(111) System 33 4.1 Preparation process of substrate . . . . . . . . . . . . . . . . . . . . . 33 4.2 Characteristic results . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 4.3 STM image of Cu(111) . . . . . . . . . . . . . . . . . . . . . . . . . . 35 4.4 Deposition of MnPc molecules on substrate . . . . . . . . . . . . . . . 37 4.5 Morphology of MnPc /Cu (111) . . . . . . . . . . . . . . . . . . . . . 37 4.6 STS results of MnPc /Cu (111) . . . . . . . . . . . . . . . . . . . . . 40 5 Morphology of MnPc/Co/Cu(111) System 43 5.1 Morphology of Co /Cu (111) system . . . . . . . . . . . . . . . . . . 43 5.2 SP-STM and SP-STS results of Co /Cu (111) system . . . . . . . . . 44 5.3 Morphology of MnPc /Co /Cu (111) . . . . . . . . . . . . . . . . . . 47 5.4 Morphology of MnPc /Cu /Cu (111) . . . . . . . . . . . . . . . . . . 50 6 Electronic Structures and Magnetic Properties of MnPc/Co/Cu (111) System 54 6.1 STM and STS measurement . . . . . . . . . . . . . . . . . . . . . . . 54 6.2 SP-STM and SP-STS measurement . . . . . . . . . . . . . . . . . . . 54 7 Discussion 59 7.1 Adsorption of MnPc molecules on Co nanoislands . . . . . . . . . . . 59 7.2 Spin-polarization of single MnPc molecule on Co nanoislands . . . . . 65 8 Conclusions 67 Bibliography 69 | |
| dc.language.iso | en | |
| dc.subject | 花青 | zh_TW |
| dc.subject | 自旋偏極化掃描穿隧電子顯微鏡 | zh_TW |
| dc.subject | 錳酞 | zh_TW |
| dc.subject | SP-STM | en |
| dc.subject | MnPc | en |
| dc.title | 利用低溫自旋偏極化掃描穿隧電子顯微鏡解析錳酞花青/
鈷/銅(111)系統的電子結構及磁性性質 | zh_TW |
| dc.title | Electronic Structure and Magnetic Property of MnPc /Co
/Cu(111) Resolved by Low Temperature Spin-Polarized Scanning Tunneling Microscopy | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 98-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 江文中,林文欽 | |
| dc.subject.keyword | 自旋偏極化掃描穿隧電子顯微鏡,錳酞,花青, | zh_TW |
| dc.subject.keyword | SP-STM,MnPc, | en |
| dc.relation.page | 71 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2010-07-22 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 物理研究所 | zh_TW |
| 顯示於系所單位： | 物理學系 | |
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