Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000356236> ?p ?o ?g. }
- W2000356236 abstract "The photocarrier relaxation dynamics of an $n$-type ${mathrm{LaAlO}}_{3}/{mathrm{SrTiO}}_{3}$ heterointerface is investigated using femtosecond transient absorption (TA) spectroscopy at low temperatures. In both ${mathrm{LaAlO}}_{3}/{mathrm{SrTiO}}_{3}$ heterostructures and electron-doped ${mathrm{SrTiO}}_{3}$ bulk crystals, the TA spectrum shows a Drude-like free carrier absorption immediately after excitation. In addition, a broad absorption band gradually appears within 40 ps, which corresponds to the energy relaxation of photoexcited free electrons into self-trapped polaron states. We reveal that the polaron formation time is enhanced considerably at the ${mathrm{LaAlO}}_{3}/{mathrm{SrTiO}}_{3}$ heterointerface as compared to bulk crystals. Further, we discuss the interface effects on the electron relaxation dynamics in conjunction with the splitting of the ${t}_{2g}$ subbands due to the interface potential." @default.
- W2000356236 created "2016-06-24" @default.
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- W2000356236 date "2013-07-24" @default.
- W2000356236 modified "2023-10-01" @default.
- W2000356236 title "Measurement of the Femtosecond Optical Absorption of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mi>LaAlO</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mo>/</mml:mo><mml:msub><mml:mi>SrTiO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>Heterostructures: Evidence for an Extremely Slow Electron Relaxation at the Interface" @default.
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- W2000356236 doi "https://doi.org/10.1103/physrevlett.111.047403" @default.
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