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[文献書誌] Y.Shimada, T.Matsuo, K.Hirakawa: "Thz Emission due to Miniband Transport in GaAs/AlGaAs Superlattices"Japanese Journal of Applied Physics. vol.40, No.4B. 3009-3010 (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 Communicatios). vol.64, No.20. 201323-201326(R)
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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] K.Hirakawa, A.Oiwa, H.Munekata: "Infrared optical conductivity of In_<1-x>Mn_xAs"Physica E. vol.10. 215-218 (2001)
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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)