onr:"swepub:oai:lup.lub.lu.se:f05ea6af-2ef0-4f9f-860f-d3d50e0ae81e"
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03806naa a2200517 4500 | |
| 001 | oai:lup.lub.lu.se:f05ea6af-2ef0-4f9f-860f-d3d50e0ae81e | |
| 003 | SwePub | |
| 008 | 220516s2022 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://lup.lub.lu.se/record/f05ea6af-2ef0-4f9f-860f-d3d50e0ae81e2 URI |
| 024 | 7 | a https://doi.org/10.1021/acs.nanolett.1c044342 DOI |
| 040 | a (SwePub)lu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Chiu, Chun Chienu National Cheng Kung University4 aut |
| 245 | 1 0 | a Presence of Delocalized Ti 3d Electrons in Ultrathin Single-Crystal SrTiO3 |
| 264 | c 2022-01-24 | |
| 264 | 1 | b American Chemical Society (ACS),c 2022 |
| 300 | a 7 s. | |
| 520 | a Strontium titanate (STO), with a wide spectrum of emergent properties such as ferroelectricity and superconductivity, has received significant attention in the community of strongly correlated materials. In the strain-free STO film grown on the SrRuO3 buffer layer, the existing polar nanoregions can facilitate room-temperature ferroelectricity when the STO film thickness approaches 10 nm. Here we show that around this thickness scale, the freestanding STO films without the influence of a substrate show the tetragonal structure at room temperature, contrasting with the cubic structure seen in bulk form. The spectroscopic measurements reveal the modified Ti-O orbital hybridization that causes the Ti ion to deviate from its nominal 4+ valency (3d0 configuration) with excess delocalized 3d electrons. Additionally, the Ti ion in TiO6 octahedron exhibits an off-center displacement. The inherent symmetry lowering in ultrathin freestanding films offers an alternative way to achieve tunable electronic structures that are of paramount importance for future technological applications. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Den kondenserade materiens fysik0 (SwePub)103042 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Condensed Matter Physics0 (SwePub)103042 hsv//eng |
| 653 | a delocalized Ti 3d electrons | |
| 653 | a ferroelectricity | |
| 653 | a freestanding SrTiO | |
| 653 | a RIXS | |
| 700 | 1 | a Ho, Sheng Zhuu National Cheng Kung University4 aut |
| 700 | 1 | a Lee, Jenn Minu Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory4 aut0 (Swepub:lu)je6687le |
| 700 | 1 | a Shao, Yu Chengu National Synchrotron Radiation Research Center Taiwan,Advanced Light Source, Berkeley4 aut |
| 700 | 1 | a Shen, Yangu East China Normal University4 aut |
| 700 | 1 | a Liu, Yu Chenu National Cheng Kung University4 aut |
| 700 | 1 | a Chang, Yao Wenu National Cheng Kung University4 aut |
| 700 | 1 | a Zheng, Yun Zheu East China Normal University4 aut |
| 700 | 1 | a Huang, Rongu East China Normal University4 aut |
| 700 | 1 | a Chang, Chun Fuu Max Planck Institute for Chemical Physics of Solids4 aut |
| 700 | 1 | a Kuo, Chang Yangu National Chiao Tung University,National Synchrotron Radiation Research Center Taiwan4 aut |
| 700 | 1 | a Duan, Chun Gangu East China Normal University4 aut |
| 700 | 1 | a Huang, Shih Wenu Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,Paul Scherrer Institute4 aut0 (Swepub:lu)maxl-sha |
| 700 | 1 | a Yang, Jan Chiu National Cheng Kung University4 aut |
| 700 | 1 | a Chuang, Yi Deu Advanced Light Source, Berkeley4 aut |
| 710 | 2 | a National Cheng Kung Universityb MAX IV-laboratoriet4 org |
| 773 | 0 | t Nano Lettersd : American Chemical Society (ACS)g 22:4, s. 1580-1586q 22:4<1580-1586x 1530-6984x 1530-6992 |
| 856 | 4 | u http://dx.doi.org/10.1021/acs.nanolett.1c04434y FULLTEXT |
| 856 | 4 8 | u https://lup.lub.lu.se/record/f05ea6af-2ef0-4f9f-860f-d3d50e0ae81e |
| 856 | 4 8 | u https://doi.org/10.1021/acs.nanolett.1c04434 |
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