Evidence for Unconventional Superconductivity of Sr2RuO4 from Specific-Heat Measurements

Journal of the Physical Society of Japan

Volumn 67, Issue 2, 1998, Pages 560-563

  Nishizaki, Shuji ^a   Maeno, Yoshiteru ^a   Farner, Snorre ^b,c   Ikeda, Shin Ichi ^a,b   Fujita, Toshizo ^b  

^a KYOTO UNIVERSITY   (Japan)

^b HIROSHIMA UNIVERSITY   (Japan)

^c NORWEGIAN UNIVERSITY OF SCIENCE AND TECHNOLOGY   (Norway)

Author keywords

Layered perovskite; Ruthenate; Specific heat; Sr2RuO4; Unconventional superconductivity

Indexed keywords

EID: 0032373086     PISSN: 00319015     EISSN: None     Source Type: Journal    
DOI: 10.1143/JPSJ.67.560     Document Type: Article

References (19)

1. Y. Maeno, H. Hashimoto, K. Yoshida, S. Nishizaki, T. Fujita, J. G. Bednorz and F. Lichtenberg: Nature 372 (1994) 532.
2. S. Nishizaki, Y. Maeno and T. Fujita: J. Phys. Soc. Jpn. 65 (1996) 1876.
3. S. Nakatsuji, S. Ikeda and Y. Maeno: J. Phys. Soc. Jpn. 66 (1997) 1868.
4. Y. Maeno, K. Yoshida, H. Hashimoto, S. Nishizaki, S. Ikeda, M. Nohara, T. Fujita, A. P. Mackenzie, N. E. Hussey, J. G. Bednorz and F. Lichtenberg: J. Phys. Soc. Jpn. 66 (1997) 1405.
5. T. M. Rice and M. Sigrist: J. Phys.: Condens. Matter 7 (1995) L643.
6. A. P. Mackenzie, R. K. W. Haselwimmer, A. W. Tyler, Y. Mori, S. Nishizaki and Y. Maeno: Phys. Rev. Lett. 80 (1998) 161.
7. KOA corporation, flat chip resistors, model RK73K1E.
8. S. Ikeda et al: unpublished.
9. A. P. Mackenzie, S. R. Julian, A. J. Diver, G. J. McMullan, M. P. Ray, G. G. Lonzarich, Y. Maeno, S. Nishizaki and T. Fujita: Phys. Rev. Lett. 76 (1996) 3786.
10. K. Ishida, Y. Kitaoka, K. Asayarna, S. Ikeda, S. Nishizaki, Y. Maeno, K. Yoshida and T. Fujita: Phys. Rev. B 56 (1997) R505.
11. K. Maki and H. Won: Ann. Physik. 5 (1996) 320.
12. For example, Y. Kitaoka, K. Ishida and K. Asayama: J. Phys. Soc. Jpn. 63 (1994) 2052.
13. T. Hotta: J. Phys. Soc. Jpn. 62 (1993) 274, and private communication.
14. P. J. Hirschfeld, P. Wöfle and D. Einzel: Phys. Rev. B 37 (1988) 83.
15. D. F. Agterberg, T. M. Rice and M. Sigrist: Phys. Rev. Lett. 78 (1997) 3374.
16. M. Sigrist and M. E. Zhitomirsky, J. Phys. Soc. Jpn. 65 (1996) 3452.
17. K. Machida, M. Ozaki and T. Ohmi: J. Phys. Soc. Jpn. 65 (1996) 3720.
18. In a more general case, the non-unitary state may have two gaps, both of which are non-zero. In this case γ0 = 0.
19. 4: I. Mazin and D. Singh: Phys. Rev. Lett. 79 (1997) 733.