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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 陳永芳(Yang-Fang Chen) | |
dc.contributor.author | Yu-Hsuan Nian | en |
dc.contributor.author | 粘育瑄 | zh_TW |
dc.date.accessioned | 2021-06-17T07:03:10Z | - |
dc.date.available | 2019-07-31 | |
dc.date.copyright | 2019-07-31 | |
dc.date.issued | 2019 | |
dc.date.submitted | 2019-07-29 | |
dc.identifier.citation | [1] Y. Tokura and N. Nagaosa, Orbital physics in transition-metal oxides, SCIENCE 288, 462-468 (2000).
[2] P. Zubko, S. Gariglio, M. Gabay, P. Ghosez and J.M. Triscone, Interface Physics in Complex Oxide Heterostructures, Annual Review of Condensed Matter Physics 2, 141-165 (2011). [3] S.M. Wu, Shane A. Cybart, P. Yu, M. D. Rossell , J. X. Zhang , R. Ramesh and R. C. Dynes, Reversible electric control of exchange bias in a multiferroic field-effect device, Nature Material 9, 756-761 (2010). [4] M. Nord, P. E. Vullum, M. Moreau, J. E. Boschker, S. M. Selbach, R. Holmestad, and T. Tybell, Structural phases driven by oxygen vacancies at the La0.7Sr0.3MnO3/SrTiO3 hetero-interface, Applied Physics Letters 106, (2015). [5] C.P. Chang, M.W. Chu, H.T. Jeng, S.L. Cheng, J.G. Lin , J.R. Yang and C.H. Chen, Condensation of two-dimensional oxide-interfacial charges into one-dimensional electron chains by the misfit-dislocation strain field, Nature Communication 5, 3522 (2014). [6] P.W. Lee, V.N. Singh, G.Y. Guo, H.J. Liu, J.C. Lin, Y.H. Chu, C.H. Chen and M.W. Chu, Hidden lattice instabilities as origin of the conductive interface between insulating LaAlO3 and SrTiO3, Nature Communication 7, 12773 (2016). [7] J. Chakhalian, J. W. Freeland, G. Srajer, J. Strempferi, G. Khaliuillin, J. C. Cezar, T. Charlton, R. Dalgliesh, C. Bernhard, G. Cristiani, H.U. Habermeier and B. Keimer, Magnetism at the interface between ferromagnetic and superconducting oxides, Nature Physics 2, 244-248 (2006). [8] S. Yunoki, A. Moreo, S. Okamoto, S. S. Kancharla,E. Dagotto, and A. Fujimori, Electron doping of cuprates via interfaces with manganites, Physical Review B 76, 064532 (2007). [9] Mannhart, J. and Schlom, Oxide interfaces—an opportunity for electronics, SCIENCE 327, 1607-1611 (2010). [10] A. Tebano, C. Aruta, S. Sanna, P. G. Medaglia, G. Balestrino, A. A. Sidorenko, R. De Renzi, G. Ghiringhelli, L. Braicovich, V. Bisogni and N. B. Brooke,. Evidence of orbital reconstruction at interfaces in ultrathin La0.67Sr0.33MnO3 films, Physical Review Letter 100, 137401 (2008). [11] L. F. Kourkoutis, J. H. Song, H. Y. Hwang and D. A. Muller, Microscopic origins for stabilizing room-temperature ferromagnetism in ultrathin manganite layers, Proceeding of the National Academy of Science USA 107, 11682-11685 (2010). [12] Zhaoliang Liao, Fengmiao Li, Peng Gao, Lin Li, Jiandong Guo, Xiaoqing Pan, R. Jin, E. W. Plummer, and Jiandi Zhang,. Origin of the metal-insulator transition in ultrathin films of La2/3Sr2/3MnO3, Physical Review B 92, 125123 (2015). [13] S. I. Khartsev, P. Johnsson and A. M. Grishin, Colossal magnetoresistance in ultrathin epitaxial La0.75Sr0.25MnO3 films, Journal of Applied Physics 87, 2394-2399 (2000). [14] Y. Hikita, M. Nishikawa, T. Yajima and H. Y. Hwang, Termination control of the interface dipole inLa0.7Sr0.3MnO3/Nb:SrTiO3(001) Schottky junctions, Physical Review B 79, 073101 (2009). [15] M. Minohara, R. Yasuhara, H. Kumigashira and M. Oshima, Termination layer dependence of Schottky barrier height forLa0.6Sr0.4MnO3/Nb:SrTiO3heterojunctions, Physical Review B 81, 235322 (2010). [16] R. T. Tung, E. R. Recent advances in Schottky barrier concepts, Materials Science and Engineering: R: Reports, 2001 - Elsevier 35, 1-138 (2001). [17] H. Fujishiro, T. Fukase,& M. Ikebe, Charge ordering and sound velocity anomaly in La 1-x Sr x MnO3 (x≥ 0.5), Journal of the Physical Society of Japan 67, 2582-2585 (1998). [18] M. Izumi, Y. Ogimoto, T. Manako, M. Kawasaki and Y. Tokura, Interface Effect and Its Doping Dependence in La1-x Sr x MnO3/SrTiO3 Superlattices, Journal of the PhysicalSociety of Japan 71, 2621-2624 (2002). [19] L. W. Martin, Y. H. Chu,and R. Ramesh,Advances in the growth and characterization of magnetic, ferroelectric, and multiferroic oxide thin films, Materials Science and Engineering: R: Reports 68, 89-133 (2010). [20] C.P. Chang, J. G. Lin, H. T. Jeng, S.L. Cheng, W. F. Pong, Y. C. Shao, Y. Y. Chin, H.J. Lin, C. W. Chen, J.R. Yang, C. H. Chen and M.W. Chu, Atomic-scale observation of a graded polar discontinuity and a localized two-dimensional electron density at an insulating oxide interface, Physical Review B 87, (2013). [21] D. A. Muller, Structure and bonding at the atomic scale by scanning transmission electron microscopy, Nature Material 8, 263-270 (2009). [22] L. A. Grunes, R. D. Leapman, C. N. Wilker, R. Hoffmann and A. B. Kunz, OxygenKnear-edge fine structure: An electron-energy-loss investigation with comparisons to new theory for selected3dTransition-metal oxides, Physical Review B 25, (1982). [23] A. Vailionis, H. Boschker, W. Siemons, E. P. Houwman, D. H. A. Blank, G. Rijnders, and G. Koster, Misfit strain accommodation in epitaxialABO3perovskites: Lattice rotations and lattice modulations, Physical Review B 83, 064101 (2011). [24] R. D. Shannon, Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides, Acta Crystallographica 32, 751-767 (1976). | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/72667 | - |
dc.description.abstract | 隨著對高空間解析度分析材料結構需求增加,掃描穿透式電子顯微鏡(Scanning transmission electron microscope, STEM)為不可或缺的重要研究工具。利用掃描穿透式電子顯微鏡結合電子損失能譜(Electron energy-loss spectroscopy, EELS),可以同時得到材料的電子結構與原子級影像。
在本研究中,我們應用掃描穿透式電子顯微鏡結合電子損失能譜研究La0.7Sr0.3MnO3(10u.c.)/SrTiO3與La0.7Sr0.3MnO3(5u.c.)/SrTiO3,在室溫下分別為金屬性與絕緣性。原子級尺度的電子結構分析顯示二維電子存在於La0.7Sr0.3MnO3(10u.c.)/SrTiO3。然而,La0.7Sr0.3MnO3(5u.c.)/SrTiO3沒有電荷累積於介面上。此外,我們也討論La0.7Sr0.3MnO3/SrTiO3結構的特性與蕭基特位能障(Schottky barrier ) La0.7Sr0.3MnO3(10u.c.)/SrTiO3之間的關聯性。 | zh_TW |
dc.description.abstract | With the increasing demand in structural and electronic characterizations at high spatial resolution, atomically-resolved scanning transmission electron microscope (STEM) has become an indispensable tool in modern materials research. When used in combination with electron energy-loss spectroscopy (EELS) that reflects the electronic features of unoccupied density of states, a simultaneous tackling of the structural and electronic characters at atomic resolution had been proven possible and this conjunct STEM-EELS technique is most suitable for addressing the physics at a reduced dimension. In this thesis, we apply the STEM-EELS to the heterostructural system of La0.7Sr0.3MnO3/SrTiO3 with the La0.7Sr0.3MnO3 thickness of 5 and 10 unit cells, respectively. Notably, the 5 (10) unit-cell La0.7Sr0.3MnO3 film is insulating (conductive) at room temperature, whereas the corresponding bulk is characteristically metallic. The atomic-scale electronic characterization revealed the existence of a two-dimension electron density in the conductive 10-unit-cell La0.7Sr0.3MnO3/SrTiO3. In comparison, the 5-unit-cell counterpart displays a missing charge density as expected for an insulating interface. The profound structure-property interplay in the heterostructures were discussed and the reported Schottky barrier in a metallic La0.7Sr0.3MnO3/SrTiO3 heterostructure was also tackled. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T07:03:10Z (GMT). No. of bitstreams: 1 ntu-108-R06245003-1.pdf: 4775902 bytes, checksum: d4bc6b5b5ef86511726df248418f36d4 (MD5) Previous issue date: 2019 | en |
dc.description.tableofcontents | 目錄 3
圖目錄 5 表目錄 9 摘要 10 Abstract 11 第一章簡介 13 1.1 前言 13 1.2 研究動機 14 第二章 材料介紹 18 2.1 晶體結構 18 2.2 電子結構 18 2.3 鑭鍶錳氧的相圖 20 第三章 實驗原理 22 3.1 電子和樣品的交互作用-電子散射 22 3.2 形變(Strain) 23 3.3 擴散作用(Interdiifusion) 23 3.4 X光繞射原理 24 第四章 實驗技術介紹 28 4.1 STEM影像 28 4.2 STEM-EELS介紹 30 4.3 X光粉末繞射 34 第五章 實驗數據分析與討論 35 5.1電性量測 36 5.2 ADF影像分析 37 5.3原子位移分析 41 5.4 STEM-EELS分析 46 第六章 結論 58 參考文獻 59 | |
dc.language.iso | zh-TW | |
dc.title | "利用掃描穿透式電子顯微鏡結合電子能量損失能(La,Sr)MnO3/SrTiO3氧化物異質介面之研究" | zh_TW |
dc.title | Study of (La,Sr)MnO3/SrTiO3 Oxide Interfaces by Scanning Transmission Electron Microscopy Combined with Electron Energy-Loss Spectroscopy | en |
dc.type | Thesis | |
dc.date.schoolyear | 107-2 | |
dc.description.degree | 碩士 | |
dc.contributor.coadvisor | 朱明文(Ming-Wen Chu) | |
dc.contributor.oralexamcommittee | 朱英豪(Ying-Hao Chu),郭光宇(Guang-Yu Guo) | |
dc.subject.keyword | 掃描穿透式電子顯微鏡,電子能量損失能譜,氧化物異質介面,鑭鍶錳氧,蕭基特位能障, | zh_TW |
dc.subject.keyword | scanning transmission electron microscopy,electron energy-loss spectroscopy,oxide heterointerface,La0.7Sr0.3MnO3,Schottky barrier, | en |
dc.relation.page | 61 | |
dc.identifier.doi | 10.6342/NTU201902115 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2019-07-30 | |
dc.contributor.author-college | 理學院 | zh_TW |
dc.contributor.author-dept | 應用物理研究所 | zh_TW |
顯示於系所單位: | 應用物理研究所 |
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