Band Alignment, Built-In Potential, and the Absence of Conductivity at the LaCrO3/SrTiO3(001) Heterojunction
Journal Article
·
· Physical Review Letters, 107(20):Article No. 206802
MBE-grown LaCrO3/SrTiO3(001) exhibits a staggered band alignment with valence and conduction band offsets of 2.45(6) and 0.8(1) eV, respectively. Core-level XPS peak broadening is consistent with no band bending in the SrTiO3 and a gradient of ~200 meV per unit cell in the LaCrO3. This gradient is adequate to trigger an electronic reconstruction, and the attendant transfer of charge from film to substrate, to alleviate the polarity mismatch. However, the interface is insulating because charge redistribution within the CrO2 layers occurs rather than electronic reconstruction to screen the field.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1031408
- Report Number(s):
- PNNL-SA-80654; PRLTAO; 35200; KC0203020; KC0304030; TRN: US201201%%583
- Journal Information:
- Physical Review Letters, 107(20):Article No. 206802, Vol. 107, Issue 20; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cation Intermixing And Electronic Deviations At The Insulating LaCrO3/SrTiO3(001) Interface
Electronic Structure and Band Alignment at the NiO and SrTiO 3 p–n Heterojunctions
The impacts of cation stoichiometry and substrate surface quality on nucleation, structure, defect formation, and intermixing in complex oxide heteroepitaxy LaCrO3 on SrTiO3(001)
Journal Article
·
Tue Oct 29 00:00:00 EDT 2013
· Physical Review. B, Condensed Matter and Materials Physics, 88(15):155325-1 to 155325-9
·
OSTI ID:1031408
+4 more
Electronic Structure and Band Alignment at the NiO and SrTiO 3 p–n Heterojunctions
Journal Article
·
Tue Jul 25 00:00:00 EDT 2017
· ACS Applied Materials and Interfaces
·
OSTI ID:1031408
+8 more
The impacts of cation stoichiometry and substrate surface quality on nucleation, structure, defect formation, and intermixing in complex oxide heteroepitaxy LaCrO3 on SrTiO3(001)
Journal Article
·
Tue Jan 01 00:00:00 EST 2013
· Advanced Functional Materials
·
OSTI ID:1031408
+8 more