TY - JOUR
T1 - Fermi surface of Sr2RuO4 from angle resolved photoemission
AU - Damascelli, A.
AU - Shen, K. M.
AU - Lu, D. H.
AU - Armitage, N. P.
AU - Ronning, F.
AU - Feng, D. L.
AU - Kim, C.
AU - Shen, Z. X.
AU - Kimura, T.
AU - Tokura, Y.
AU - Mao, Z. Q.
AU - Maeno, Y.
N1 - Funding Information:
We gratefully acknowledge C. Bergemann, M. Braden, Ismail, and T. Mizokawa for useful discussions. SSRL is operated by the DOE office of Basic Energy Research, Division of Chemical Sciences. The office’s division of Material Science provided support for this research. The Stanford work is also supported by NSF grant DMR9705210 and ONR grant N00014-98-1-0195.
PY - 2001/3
Y1 - 2001/3
N2 - We investigated the low-energy electronic structure of Sr2RuO4 by angle-resolved photoemission spectroscopy (ARPES) focusing, in particular, on the controversial issues of the Fermi surface (FS) topology and of the extended van Hove singularity (evHs). A detailed study of temperature and photon energy dependence demonstrates the surface-state nature of the electronic band responsible for the evHs, and may suggest the presence of ferromagnetic correlations at the surface. In addition, we detected a replica of the primary FS that indicates a √2×√2 surface reconstruction, as confirmed by LEED. In light of these findings, the FS determined by ARPES is consistent with LDA and de Haas-van Alphen (dHvA) results, and it provides additional information on the detailed shape of the α, β and γ sheets. Also, at this stage, because of the strong sensitivity of the cleaved surface, we could not find any robust signature of the crossover from 2D to 3D Fermi liquid behavior in our ARPES measurements for T<130 K.
AB - We investigated the low-energy electronic structure of Sr2RuO4 by angle-resolved photoemission spectroscopy (ARPES) focusing, in particular, on the controversial issues of the Fermi surface (FS) topology and of the extended van Hove singularity (evHs). A detailed study of temperature and photon energy dependence demonstrates the surface-state nature of the electronic band responsible for the evHs, and may suggest the presence of ferromagnetic correlations at the surface. In addition, we detected a replica of the primary FS that indicates a √2×√2 surface reconstruction, as confirmed by LEED. In light of these findings, the FS determined by ARPES is consistent with LDA and de Haas-van Alphen (dHvA) results, and it provides additional information on the detailed shape of the α, β and γ sheets. Also, at this stage, because of the strong sensitivity of the cleaved surface, we could not find any robust signature of the crossover from 2D to 3D Fermi liquid behavior in our ARPES measurements for T<130 K.
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U2 - 10.1016/S0368-2048(00)00356-X
DO - 10.1016/S0368-2048(00)00356-X
M3 - Conference article
AN - SCOPUS:4243206266
SN - 0368-2048
VL - 114-116
SP - 641
EP - 646
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
T2 - 8th International Conference on Electronic Spectroscopy and Structure (ICESS-8)
Y2 - 8 August 2000 through 12 August 2000
ER -