TY - JOUR
T1 - Interfacial charge transfer excitation with large optical nonlinearity in manganite heterostructure
AU - Satoh, Takuya
AU - Miyano, Kenjiro
AU - Ogimoto, Yasushi
AU - Tamaru, Hiroharu
AU - Ishihara, Sumio
PY - 2005/12/1
Y1 - 2005/12/1
N2 - Interfacial electronic states between LaMnO3 and SrMnO3 have been studied by second-harmonic (SH) spectroscopy. The SH contributions from bulk, surface, and interface were separated by measuring four distinct types of manganite thin films. In the SH spectra, we found a broad peak at 2eV unique to the LaMnO3 SrMnO3 interface, which was assigned to interfacial charge transfer excitation based on a Hartree-Fock calculation. No metallic phase showed up at the interface. Experimental and theoretical second-order susceptibilities χ(2) at the interface were estimated to be ∼10-6esu, which is ten times as large as the highest χ(2) value of BaTiO3.
AB - Interfacial electronic states between LaMnO3 and SrMnO3 have been studied by second-harmonic (SH) spectroscopy. The SH contributions from bulk, surface, and interface were separated by measuring four distinct types of manganite thin films. In the SH spectra, we found a broad peak at 2eV unique to the LaMnO3 SrMnO3 interface, which was assigned to interfacial charge transfer excitation based on a Hartree-Fock calculation. No metallic phase showed up at the interface. Experimental and theoretical second-order susceptibilities χ(2) at the interface were estimated to be ∼10-6esu, which is ten times as large as the highest χ(2) value of BaTiO3.
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U2 - 10.1103/PhysRevB.72.224403
DO - 10.1103/PhysRevB.72.224403
M3 - Article
AN - SCOPUS:29644433935
SN - 1098-0121
VL - 72
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 22
M1 - 224403
ER -