Orbital characters of three-dimensional Fermi surfaces in Eu2-xSrxNiO4 as probed by soft-x-ray angle-resolved photoemission spectroscopy
Uchida M, Ishizaka K, Hansmann P, Yang X, Sakano M, Miyawaki J, Arita R, Kaneko Y, Takata Y, Oura M, Toschi A, Held K, Chainani A, Andersen OK, Shin S, Tokura Y (2011)
Publication Type: Journal article
Publication year: 2011
Journal
Book Volume: 84
Article Number: ARTN 241109
Journal Issue: 24
DOI: 10.1103/PhysRevB.84.241109
Abstract
The three-dimensional Fermi-surface structure of hole-doped metallic layered nickelate Eu2-xSrxNiO4 (x = 1.1), an important counterpart to the isostructural superconducting cuprate La2-xSrxCuO4, is investigated by energy-dependent soft-x-ray angle-resolved photoemission spectroscopy. In addition to a large cylindrical hole Fermi surface analogous to the cuprates, we observe a Gamma-centered 3z(2) - r(2)-derived small electron pocket. This finding demonstrates that in the layered nickelate the 3z(2) - r(2) band resides close to the x(2) - y(2) one in energy. The resultant multiband feature with varying orbital character as revealed may strongly work against the emergence of the high-temperature superconductivity.
Authors with CRIS profile
Involved external institutions
University of Tokyo
Japan (JP)
Technische Universität Wien / Vienna University of Technology
Austria (AT)
Nanyang Technological University (NTU)
Singapore (SG)
Super Photon Ring – 8 GeV (SPring-8)
Japan (JP)
Japan Science and Technology Agency
Japan (JP)
Max-Planck-Institut für Festkörperforschung
Germany (DE)
Japan (JP)
Technische Universität Wien / Vienna University of Technology
Austria (AT)
Nanyang Technological University (NTU)
Singapore (SG)
Super Photon Ring – 8 GeV (SPring-8)
Japan (JP)
Japan Science and Technology Agency
Japan (JP)
Max-Planck-Institut für Festkörperforschung
Germany (DE)
How to cite
APA:
Uchida, M., Ishizaka, K., Hansmann, P., Yang, X., Sakano, M., Miyawaki, J.,... Tokura, Y. (2011). Orbital characters of three-dimensional Fermi surfaces in Eu2-xSrxNiO4 as probed by soft-x-ray angle-resolved photoemission spectroscopy. Physical Review B, 84(24). https://dx.doi.org/10.1103/PhysRevB.84.241109
MLA:
Uchida, Masaki, et al. "Orbital characters of three-dimensional Fermi surfaces in Eu2-xSrxNiO4 as probed by soft-x-ray angle-resolved photoemission spectroscopy." Physical Review B 84.24 (2011).
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