TY  - JOUR
VL  - 107
N1  - © 2011 American Physical Society
PB  - AMER PHYSICAL SOC
A1  - Chambers, SA
A1  - Qiao, L
A1  - Droubay, TC
A1  - Kaspar, TC
A1  - Arey, BW
A1  - Sushko, PV
JF  - PHYS REV LETT
KW  - INTERFACES
SN  - 0031-9007
Y1  - 2011/11/07/
TI  - Band Alignment, Built-In Potential, and the Absence of Conductivity at the LaCrO3/SrTiO3(001) Heterojunction
AV  - public
N2  - Core-level and valence-band x-ray photoemission spectra measured for molecular-beam-epitaxy-grown LaCrO3/SrTiO3(001) yield band offsets and potential gradients within the LaCrO3 sufficient to trigger an electronic reconstruction to alleviate the polarity mismatch. Yet, the interface is insulating. Based on first principles calculations, we attribute this unexpected result to interfacial cation mixing combined with charge redistribution within CrO2 layers, enabled by low-lying d states within LaCrO3, which suppresses an electronic reconstruction.
IS  - 20
UR  - http://dx.doi.org/10.1103/PhysRevLett.107.206802
ID  - discovery1330864
ER  -