Tuning the Two-Dimensional Electron Gas at Oxide Interfaces with Ti–O Configurations: Evidence from X-ray Photoelectron Spectroscopy
Source abstract
Abstract
A chemical redox reaction can lead to a two-dimensional electron gas at the interface between a TiO 2 -terminated SrTiO 3 (STO) substrate and an amorphous LaAlO 3 capping layer. When replacing the STO substrate with rutile and anatase TiO 2 substrates, considerable differences in the interfacial conduction are observed. On the basis of X-ray photoelectron spectroscopy (XPS) and transport measurements, we conclude that the interfacial conduction comes from redox reactions, and that the differences among the materials systems result mainly from variations in the activation energies for the diffusion of oxygen vacancies at substrate surfaces.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electronic and Structural Properties of Oxides · Magnetic and transport properties of perovskites and related materials · Semiconductor materials and devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, Peoples’ Republic of China
School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
Department of Energy Conversion and Storage, Technical University of Denmark, Risø Campus, 4000 Roskilde, Denmark
Funding
National Natural Science Foundation of China · National Basis Research of China · Key Program of the Chinese Academy of Sciences
References (50)
Show source-provided references
1. 10.1038/nature0230810.1038/nature02308 ↗
2. 10.1021/nl504622w10.1021/nl504622w ↗
3. 10.1063/1.349644010.1063/1.3496440 ↗
4. 10.1038/ncomms239410.1038/ncomms2394 ↗
5. 10.1126/science.114600610.1126/science.1146006 ↗
6. 10.1038/nmat193110.1038/nmat1931 ↗
7. 10.1002/admi.20130000110.1002/admi.201300001 ↗
8. 10.1038/ncomms655410.1038/ncomms6554 ↗
9. 10.1021/acs.nanolett.7b0374410.1021/acs.nanolett.7b03744 ↗
10. 10.1038/nmat430310.1038/nmat4303 ↗
11. 10.1103/physrevx.3.04102710.1103/physrevx.3.041027 ↗
12. 10.1038/nmat156910.1038/nmat1569 ↗
13. 10.1103/physrevlett.98.19680210.1103/physrevlett.98.196802 ↗
14. 10.1103/physrevlett.98.21680310.1103/physrevlett.98.216803 ↗
15. 10.1103/physrevb.75.12140410.1103/physrevb.75.121404 ↗
16. 10.1016/j.surfrep.2010.09.00110.1016/j.surfrep.2010.09.001 ↗
17. 10.1021/acsami.6b1270610.1021/acsami.6b12706 ↗
18. 10.1021/nl201821j10.1021/nl201821j ↗
19. 10.1002/adma.20130463410.1002/adma.201304634 ↗
20. 10.1063/1.281690710.1063/1.2816907 ↗
21. 10.1063/1.497824810.1063/1.4978248 ↗
22. 10.1016/j.apsusc.2012.01.11710.1016/j.apsusc.2012.01.117 ↗
23. 10.1021/nl302214x10.1021/nl302214x ↗
24. 10.1002/adma.20150502110.1002/adma.201505021 ↗
25. 10.1103/physrevmaterials.1.05200210.1103/physrevmaterials.1.052002 ↗
26. 10.1063/1.351584910.1063/1.3515849 ↗
27. 10.1016/j.ssi.2015.09.00210.1016/j.ssi.2015.09.002 ↗
28. 10.1021/acsami.5b0669410.1021/acsami.5b06694 ↗
29. 10.1021/acsami.6b1225410.1021/acsami.6b12254 ↗
30. 10.1103/physrevb.95.19515910.1103/physrevb.95.195159 ↗
31. 10.1103/physrevb.82.20140710.1103/physrevb.82.201407 ↗
32. 10.1002/adma.20080301910.1002/adma.200803019 ↗
33. 10.1143/ptp.32.3710.1143/ptp.32.37 ↗
34. 10.1103/physrevb.87.15515110.1103/physrevb.87.155151 ↗
35. 10.1021/acsami.7b1172710.1021/acsami.7b11727 ↗
36. 10.1103/revmodphys.57.28710.1103/revmodphys.57.287 ↗
37. 10.1103/physrevlett.107.25660110.1103/physrevlett.107.256601 ↗
38. 10.1038/srep2608110.1038/srep26081 ↗
39. 10.1088/0953-8984/6/13/01310.1088/0953-8984/6/13/013 ↗
40. 10.1103/physrevlett.81.522510.1103/physrevlett.81.5225 ↗
41. 10.1103/physrevb.62.6910.1103/physrevb.62.69 ↗
42. 10.1063/1.361572010.1063/1.3615720 ↗
43. 10.1063/1.482043810.1063/1.4820438 ↗
44. 10.1016/j.physb.2008.12.03410.1016/j.physb.2008.12.034 ↗
45. 10.1126/science.115984610.1126/science.1159846 ↗
46. 10.1103/physrevlett.104.03680610.1103/physrevlett.104.036806 ↗
47. 10.1103/physrevb.73.06410610.1103/physrevb.73.064106 ↗
48. 10.1016/j.susc.2014.11.01510.1016/j.susc.2014.11.015 ↗
49. 10.1021/jp811288n10.1021/jp811288n ↗
50. 10.1088/0953-8984/23/43/43500410.1088/0953-8984/23/43/435004 ↗