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Self-energy analysis of multiple-bosonic mode coupling in Sr2RuO4 |
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| Authors: | Chul Kim CS Leem YK Kim WS Jung HY Choi RG Moore C Kim |
| Institution: | a Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Republic of Korea b Nanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan c Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA d Department of Physics, Applied Physics, and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, CA 94305, USA |
| Abstract: | We report angle-resolved photoemission spectroscopy studies on Sr2RuO4. We observe multiple-bosonic mode coupling in the α and β band dispersions. To extract the self-energy from the data for which the usual fitting methods do not work well, we propose a scheme that exploits the relation between the spectral intensity and self-energy, termed as relative self-energy. The relative self-energy obtained in that way contains important features of the self-energy. We observe not only the features that can be obtained from the band dispersions but also additional features that were not seen. |
| Keywords: | A Oxides C Photoelectron spectroscopy D Electronic structure |
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