TY - JOUR
T1 - Unusual mass renormalization in FeSi studied by high-resolution photoemission
AU - Saitoh, T.
AU - Sekiyama, A.
AU - Mizokawa, T.
AU - Fujimori, A.
AU - Ito, K.
AU - Nakamura, H.
AU - Shiga, M.
PY - 1995/8
Y1 - 1995/8
N2 - We have studied the electronic structure of FeSi by high-resolution photoemission. At room temperature the spectra show no energy gap while a gap opening was observed below ∼150 K accompanied by the gradual paramagnetic-to-nonmagnetic transition. From analysis of the spectral lineshape using a model self-energy, we find that considerable band narrowing occurs near the band edge, probably due to electron correlation, giving a qualitative explanation to the unusual electronic and magnetic properties.
AB - We have studied the electronic structure of FeSi by high-resolution photoemission. At room temperature the spectra show no energy gap while a gap opening was observed below ∼150 K accompanied by the gradual paramagnetic-to-nonmagnetic transition. From analysis of the spectral lineshape using a model self-energy, we find that considerable band narrowing occurs near the band edge, probably due to electron correlation, giving a qualitative explanation to the unusual electronic and magnetic properties.
KW - A. semiconductors
KW - D. electron-electron interactions
KW - E. photoelectron spectroscopies
KW - electronic band structure
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U2 - 10.1016/0038-1098(95)00277-4
DO - 10.1016/0038-1098(95)00277-4
M3 - Article
AN - SCOPUS:0029358442
VL - 95
SP - 307
EP - 311
JO - Solid State Communications
JF - Solid State Communications
SN - 0038-1098
IS - 5
ER -