Journal
APPLIED PHYSICS LETTERS
Volume 86, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1946901
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Ultrafast photoelectric effects have been observed in La0.7Sr0.3MnO3/Si p-n junctions fabricated by laser molecular-beam epitaxy. The rise time was similar to 210 ps and the full width at half-maximum was similar to 650 ps for the photovoltaic pulse when the junction was irradiated by a 1064 nm laser pulse of 25 ps duration. The photovoltaic sensitivity was as large as 435 mV/mJ for a 1064 nm laser pulse. No such photovoltaic signal was observed with irradiation from a 10.6 mu m CO2 laser pulse. The results reveal that this phenomenon is an ultrafast photoelectric effect. (c) 2005 American Institute of Physics.
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