教師資料查詢 | 類別: 期刊論文 | 教師: 張經霖 CHANG, HENRY CHING-LIN (瀏覽個人網頁)

標題:Electron Enrichment in 3d Transition Metal Oxide Hetero-Nanostructu res
學年100
學期1
出版(發表)日期2011/08/01
作品名稱Electron Enrichment in 3d Transition Metal Oxide Hetero-Nanostructu res
作品名稱(其他語言)
著者Kronawitter, Coleman X.; Bakke, Jonathan R.; Wheeler, Damon A.; Wang, Wei-Cheng; Chang, Chinglin; Antoun, Bonnie R.; Zhang, Jin Z.; Guo, Jinghua; Bent, Stacey F.; Mao,Samuel S.; Vayssieres, Lionel
單位淡江大學物理學系暨研究所
出版者Washington: American Chemical Society
著錄名稱、卷期、頁數Nano Letters 11(9), pp.3855-3861
摘要Direct experimental observation of spontaneous electron enrichment of metal d orbitals in a new transition metal oxide heterostructure with nanoscale dimensionality is reported. Aqueous chemical synthesis and vapor phase deposition are combined to fabricate oriented arrays of high-interfacial-area hetero-nanostructures comprised of titanium oxide and iron oxide nanomaterials. Synchrotron-based soft X-ray spectroscopy techniques with high spectral resolution are utilized to directly probe the titanium and oxygen orbital character of the interfacial region’s occupied and unoccupied densities of states. These data demonstrate the interface to possess electrons in Ti 3d bands and an emergent degree of orbital hybridization that is absent in parent oxide reference crystals. The carrier dynamics of the hetero-nanostructures are studied by ultrafast transient absorption spectroscopy, which reveals the presence of a dense manifold of states, the relaxations from which exhibit multiple exponential decays whose magnitudes depend on their energetic positions within the electronic structure.
關鍵字Carrier dynamics; electronic structure; interfacial charge transfer; nanostructure; oxide heterostructure
語言
ISSN1530-6984;1530-6992
期刊性質
收錄於
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式紙本;電子版
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