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[文献書誌] S.W.Lee, K.Hirakawa: "Lifetime of photoexcited carriers in modulation-doped quantum dot infrared photodetectors"Physica E. (印刷中).
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[文献書誌] Ph.Lelong, K.Hirakawa, K.Hirotani, S.-W.Lee, H.Sakaki: "Fano profiles in bound-to-continuum intersubband transitions in negatively charged InAs quantum dots"Proceedings of the 25th International Conference on the Physics of Semiconductors. 1163-1164 (2001)
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[文献書誌] K.Hirakawa, K.Yamanaka, Y.Kawaguchi, M.Endo, et al.: "Far-infrared photoresponse of the magnetoresistance of the two-dimensional electron systems in the integer quantized Hall regime"Physical Review B. Vol.63, No.8. 85320-85324 (2001)
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[文献書誌] Y.Kawaguchi, K.Hirakawa, M.Saeki, K.Yamanaka, S.Komiyama: "Performance of high-sensitivity quantum Hall far infrared photodetectors"Applied Physics Letters. Vol.80, No.1. 136-138 (2002)
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[文献書誌] Y.Kawano, S.Komiyama, K.Hirakawa: "Suppression of electron-hole pair recombination in edge states in quantum Hall regimes"Physica B. Vol.298, No.1-4. 33-37 (2001)
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[文献書誌] N.Sekine, K.Hirakawa, M.Vosseburger, P.Haring Bolivar, et al.: "Crossover from coherent to incoherent excitation of two-dimensional plasmons in GaAs/AlxGal-xAs single quantum wells by femtosecond laser pulses"Physical Review B(Rapid Communications). Vol.64, No.20. 201323-201326(R) (2001)