TY - JOUR
T1 - Electronic states for InAs(111)A-(2×2)S surface studied by angle-resolved photoemission spectroscopy
AU - Ichikawa, S.
AU - Sanada, N.
AU - Shimomura, M.
AU - Abukawa, T.
AU - Kono, S.
AU - Fukuda, Y.
N1 - Funding Information:
This work was supported by the Institute of Materials Structure Science (proposal number 97G328). The authors are grateful for the technical support of the staffs at Photon Factory. One of us (S.I.) greatly acknowledges the partial financial support of Kokan Keisoku K.K.
PY - 2000/5/20
Y1 - 2000/5/20
N2 - Valence electronic states for an InAs(111)A-(2×2)S surface are investigated by using synchrotron radiation angle-resolved photoemission spectroscopy (SRARPES). Three bands at 1.0-1.2, 3.3, and 4.6-4.7 eV below the Fermi level are found outside the projection of bulk bands along the M̄-Γ̄-M̄′ and Γ̄-K̄-M̄ azimuths. A band at 2.8 eV below the Fermi level is found in the normal emission spectra for the (2×2)S surface. This band is located within the projection of bulk bands and independent of the momentum component normal to the surface, k⊥. The four bands are ascribed to surface states or surface resonances for the (2×2)S surface. The origin of the surface bands is discussed.
AB - Valence electronic states for an InAs(111)A-(2×2)S surface are investigated by using synchrotron radiation angle-resolved photoemission spectroscopy (SRARPES). Three bands at 1.0-1.2, 3.3, and 4.6-4.7 eV below the Fermi level are found outside the projection of bulk bands along the M̄-Γ̄-M̄′ and Γ̄-K̄-M̄ azimuths. A band at 2.8 eV below the Fermi level is found in the normal emission spectra for the (2×2)S surface. This band is located within the projection of bulk bands and independent of the momentum component normal to the surface, k⊥. The four bands are ascribed to surface states or surface resonances for the (2×2)S surface. The origin of the surface bands is discussed.
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U2 - 10.1016/S0039-6028(00)00071-6
DO - 10.1016/S0039-6028(00)00071-6
M3 - Conference article
AN - SCOPUS:0033689582
VL - 454
SP - 509
EP - 513
JO - Surface Science
JF - Surface Science
SN - 0039-6028
IS - 1
T2 - ECOSS-18: 18th European Conference on Surface Science
Y2 - 21 September 1999 through 24 September 1999
ER -