References and Discussion 2004 08 Toshiyuki Ihara References

References and Discussion 2004. 08 Toshiyuki Ihara

References １ Akiyama et. al. , Solid State Communications 122 (2002) 169 1 D doped T-Wire / density dependence of PL / X, X-, plasma emission / PL weak FES ２ Takagiwa et. al. , JPCS 63 (2002) 1587 Theory : 2 DEG / density dependence of FES in absorption spectra / X, X-, Continuum ３ Laruelle, PRB, 65 (2002) 195303 1 D doped LSL / PL at high density / strong FES by Fano resonance ４ Laruelle, PRB, 65 (2002) 195302 1 D doped LSL / PL and PLE at high density / Moss-Burstein shift / no 1 D features ５ Kapon, Physica E, 11 (2001) 224 1 D doped V-groove / PL, PLE at high density / PL FES (? ) / PLE weak FES (? ) ６ Kaur, phys. Stat. sol. A 178, 465 (2000) 2 D doped 10 nm well / density dependence of PL, PLE / X, X-, continuum / FES ７ Yusa, PRB 62 15390 (2000) 2 D doped 20 nm well / density dependence of PL, photocurrent / X, X- / FES of X ８ V. Huard, PRL 84 (1999) 187 2 D Cd. Te doped 10 nm well / density dependence of absorption / X, X- / w 2 -w 1=EF+Eb ９ Kim, Physica E 7 517 (2000) 1 D doped v-groove / PL / FES at n=2 10 Brown, PRB 54 (1996) R 11082 2 D doped 5 nm well / density dependence of absorption / X, X- but hard to resolve 11 Finkelstein, PRL 74 (1995) 976 2 D doped 20 nm well / density dependence of PL, PLE / X, X-, plasma 12 Sekiyama, PRB 51 (1995) 13899 Cu salt / PL / Fermi-liquid or Luttinver-liquid 13 G. D Mahan, Phys. Rev. 153 (1967) 882 Theory : 3 D Metal / x-ray absorption / power-law divergent in absorption spectra 14 Hawrylak, Phys. Rev. B 44 (1991) 3821 Theory : 2 D electron system / emission, absorption / X, X- / power-law divergent 15 Nozieres et al. Phys. Rev. 178 (1969) 1097 Theory : 3 D metal / x-ray absorption / reduced FES by Anderson infrared catastrophe 16 Combescot, J. Phys. (Paris) 32 (1971) 1097 Theory : 2 D electron system / absorption of X, continuum / power-law divergent

Reference Akiyama et. al. , Solid State Communications 122 (2002) 169 Takagiwa et. al. , JPCS 63 (2002) 1587

Reference Laruelle, PRB, 65 (2002) 195303 Laruelle, PRB, 65 (2002) 195302

Reference Kapon, Physica E, 11 (2001) 224

Reference Kaur, phys. Stat. sol. A 178, 465 (2000)

Reference Yusa, PRB 62 15390 (2000) V. Huard, PRL 84 (1999) 187

Reference Kim, Physica E 7 517 (2000) Brown, PRB 54 (1996) R 11082

Reference Finkelstein, PRL 74 (1995) 976

Reference Sekiyama, PRB 51 (1995) 13899

Reference Hawrylak, Phys. Rev. B 44 (1991) 3821

abstract 高品質n型ドープ単一T型量子細線 ゲート電圧で電子濃度を変えられる PL・PLE測定の電子濃度依存性 同サンプルで 2次元電子系のPL・PLE測定もできる １次元電子系でのFESの特異な変化（フェルミエッジでw 1吸収(trion)が消え、弱いw 2らしき吸収(exciton? )が残る） ←原因の候補：FESの消滅(1 D電子系でフェルミエッジがない)、偏光依存性(ある意味 1 Dの特徴)など 1 Dの方がexciton・trionの減衰が早い・ 2 Dではw 1, w 2のFESが高電子濃度でも残る。 Trionの吸収ピークが非対称、高エネルギー側のテールがFESのべき発散に対応している。 Trionのbinding energyが1 Dの方が大きい 2 me. V / 1. 5 me. V We measured PL and PLE spectra in an n-type doped T-shaped quantum wire (T-wire) of superior quality, where the electron density (n 1 D) is tuned by applying gate voltage. We found interesting differences between one-dimensional (1 D) and 2 D electron systems by comparing the spectral features of 1 D quantum wire with that of 2 D quantum well which is measured in the same T-wire sample. In the 2 D well, we observed the smooth evolution from the trion peak at low n 2 D to fermi-edge singularity (FES) at high n 2 D, which is analogous to results reported for 2 D well by other groups. In the 1 D wire, we observed strong FES of trion peak which disappears at high n 1 D. In addition, we found rapid decay of exciton peak with n 1 D, large trion binding energy in the 1 D wire, that might be the characteristic features in 1 D system.

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