| Valence-band offset and forward-backward charge transfer in manganite/NiO and manganite/LaNiO3 heterostructures | |
| Ning, X. K.; Wang, Z. J.; Chen, Y. N.; Zhang, Z. D.; wangzj@imr.ac.cn | |
| 2015 | |
| Source Publication | NANOSCALE
 |
| ISSN | 2040-3364 |
| Volume | 7Issue:48Pages:20635-20641 |
| Abstract | The valence-band offset (VBO) of the La0.67Sr0.33MnO3/NiO (LSMO/NiO), LaMnO3/NiO (LMO/NiO), LSMO/LaNiO3 (LSMO/LNO) and LMO/LaNiO3 (LSMO/LNO) heterostructures has been investigated using X-ray photoemission spectroscopy. The VBO values are calculated to be -0.72, -0.05, +1.43 and +1.51 eV for the LSMO/NiO, LSMO/LNO, LMO/LNO and LMO/NiO heterostructures, respectively. Hence, when compared with NiO and LNO, the valence band of LSMO is shifted to a lower binding energy, whereas that of LMO is shifted to a higher binding energy. In addition, the charge transfer at the interfaces has been depicted as Mn3.3+ + 0.7e -> Mn2.6+, Mn3.3+ + 0.1e -> Mn3.2+, Mn3.0+ - 0.4e -> Mn3.4+ and Mn3.0+ - 0.5e -> Mn3.5+ for the LSMO/NiO, LSMO/LNO, LMO/LNO and LMO/NiO heterostructures, respectively. Thus, the charge transfer procedure can be described as electron hopping from NiO and LNO to LSMO in the LSMO/NiO and LSMO/LNO heterostructures, and electron hopping from LMO to NiO and LNO in the LMO/NiO and LSMO/LNO heterostructures. Therefore, the charge transfer is dependent on the VBO, and the charge transfer direction can be determined from the negative or positive values of the VBO. |
| description.department | [ning, x. k. ; wang, z. j. ; chen, y. n. ; zhang, z. d.] chinese acad sci, shenyang natl lab mat sci, imr, shenyang 110016, peoples r china |
| Funding Organization | Chinese Academy of Sciences; National Natural Science of Foundation of China [51172238]; National Basic Research Program of China, Ministry of Science and Technology China [2010CB934603] |
| Indexed By | sci |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/75237 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | wangzj@imr.ac.cn |
| Recommended Citation GB/T 7714 | Ning, X. K.,Wang, Z. J.,Chen, Y. N.,et al. Valence-band offset and forward-backward charge transfer in manganite/NiO and manganite/LaNiO3 heterostructures[J]. NANOSCALE,2015,7(48):20635-20641. |
| APA | Ning, X. K.,Wang, Z. J.,Chen, Y. N.,Zhang, Z. D.,&wangzj@imr.ac.cn.(2015).Valence-band offset and forward-backward charge transfer in manganite/NiO and manganite/LaNiO3 heterostructures.NANOSCALE,7(48),20635-20641. |
| MLA | Ning, X. K.,et al."Valence-band offset and forward-backward charge transfer in manganite/NiO and manganite/LaNiO3 heterostructures".NANOSCALE 7.48(2015):20635-20641. |
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