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ARPES is an powerful technique to study the single-particle properties of solids, and therefore ARPES data can be directly compared with thermodynamic properties associated with single-particle excitations such as the electronic specific heats [1]. Under certain assumptions, ARPES data can also be compared with two-particle properties such as the charge suceptiblity [2] and the dc conductivity [3].
In this talk, analyses of thermodynamic and tranport properties are made on ARPES spectra of underdoped cuprates, where a pronounced pseudo-gap opens around k ~ (pi, 0) and a Fermi arc exists k ~ (pi/2, pi/2) [4,5]. Impurity effects and Anderson localization are also discussed.
This work has been done in collaboration with T. Yoshida, K. Tanaka, H. Yagi, X. J. Zhou, D. H. Lu, T. Sasagawa, Z. Hussain, Z.-X. Shen, T. Mizokawa, T. Fujii, I. Terasaki, A. N. Lavrov, K. Segawa, Y. Ando, H. Eisaki, T. Kakeshita and S. Uchida.
[1] A. Ino et al., Phys. Rev. Lett. 81, 2124 (1998). [2] A. Ino et al., Phys. Rev. Lett. 79, 2101 (1997). [3] Y. D. Chuang et al., Science 292, 1509 (2001). [4] T. Yoshida et al., Phys. Rev. Lett. 91, 027001 (2003). [5] T. Yoshida et al., Physica B 351, 250 (2004). |