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Photo-Molecular Science Tanaka Group

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Location: Myoudaiji, UVSOR Synchrotron Facility, Room302
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Strongly Correlated Electron System, Synchrotron Light, Photoemission

Angle-Resolved Photoemission Study on Strongly Correlated Electron Materials

Strongly correlated electron materials has attracted more attentions in the last few decades because of their unusual and fascinating properties such as high-Tc superconductivity, giant magnetoresistance, heavy fermion and so on. Those unique properties can offer a route toward the next-generation devices. We investigate the mechanism of the physical properties as well as the electronic structure of those materials by using angle-resolved photoemission spectroscopy (ARPES), a powerful tool in studying the electronic structure of complex materials, based on synchrotron radiation.

201706_t.pngFigure 1. ARPES intensity plot of slightly-overdoped Bi2223 taken with = 8 eV along FS.

Selected Publications

  1. K. Tanaka, T. Yoshida, A. Fujimori, D. H. Lu, Z.-X. Shen, X.-J. Zhou, H. Eisaki, Z. Hussain, S. Uchida, Y. Aiura, K. Ono, T. Sugaya, T. Mizuno and I. Terasaki, “Effects of Next-Nearest-Neighbor Hopping t’ on the Electronic Structure of Cuprates,” Phys. Rev. B 70, 092503 (4 pages) (2004).
  2. K. Tanaka, W. S. Lee, D. H. Lu, A. Fujimori, T. Fujii, Risdiana, I. Terasaki, D. J. Scalapino, T. P. Devereaux, Z. Hussain and Z.-X. Shen, “Distinct Fermi-Momentum-Dependent Energy Gaps in Deeply Underdoped Bi2212,” Science 314, 1910–1913 (2006).
  3. W. S. Lee, I. M. Vishik, K. Tanaka, D. H. Lu, T. Sasagawa, N. Nagaosa, T. P. Devereaux, Z. Hussain and Z.-X. Shen, “Abrupt Onset of a Second Energy Gap at the Superconducting Transition of Underdoped Bi2212,” Nature 450, 81–84 (2007).
  4. E. Uykur, K. Tanaka, T. Masui, S. Miyasaka and S. Tajima, “Coexistence of the Pseudogap and the Superconducting Gap Revealed by the c-Axis Optical Study of YBa2(Cu1–xZnx)3O7–δ,” J. Phys. Soc. Jpn. 82, 033701 (4 pages) (2013).