Kink in the dispersion of layered strontium ruthenates |
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Authors: | Aiura Y Yoshida Y Hase I Ikeda S I Higashiguchi M Cui X Y Shimada K Namatame H Taniguchi M Bando H |
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Affiliation: | National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan. y.aiura@aist.go.jp |
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Abstract: | We present detailed energy dispersions near the Fermi level along the high symmetry line GammaX on the monolayer and bilayer strontium ruthenates Sr2RuO4 and Sr3Ru2O7, determined by high-resolution angle-resolved photoemission spectroscopy. A kink in the dispersion is clearly shown for the both ruthenates. The energy position of the kink and the slope in the low-energy part near the Fermi level are almost identical between them, whereas the dispersion in the high-energy part varies, like the behavior of the kink for the cuprate superconductors. |
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