TY - JOUR
T1 - Angle-resolved photoemission study of Sr2CuO3
AU - Fujisawa, H.
AU - Yokoya, T.
AU - Takahashi, T.
AU - Miyasaka, S.
AU - Kibune, M.
AU - Takagi, H.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - We report angle-resolved photoemission spectroscopy (ARPES) on a single Cu-O chain compound Sr2CuO3 with Ne I photons. In contrast with previous ARPES with higher-energy photons, the present result clearly shows two well-separated branches of dispersions near EF ascribable to spinon and holon excitations, respectively. This indicates that spin and charge degrees of freedom are separated in one-dimensional Cu-O chains, supporting the theoretical prediction as well as the previous ARPES interpretation. Comparison with previous ARPES results indicates that surface, photoionization cross section, and finite-temperature effects substantially modify ARPES spectra.
AB - We report angle-resolved photoemission spectroscopy (ARPES) on a single Cu-O chain compound Sr2CuO3 with Ne I photons. In contrast with previous ARPES with higher-energy photons, the present result clearly shows two well-separated branches of dispersions near EF ascribable to spinon and holon excitations, respectively. This indicates that spin and charge degrees of freedom are separated in one-dimensional Cu-O chains, supporting the theoretical prediction as well as the previous ARPES interpretation. Comparison with previous ARPES results indicates that surface, photoionization cross section, and finite-temperature effects substantially modify ARPES spectra.
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U2 - 10.1103/PhysRevB.59.7358
DO - 10.1103/PhysRevB.59.7358
M3 - Article
AN - SCOPUS:0001506145
SN - 1098-0121
VL - 59
SP - 7358
EP - 7361
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 11
ER -