Theory of magnetic properties in the spin-triplet superconducting state of SrRuO

Nomura, Takuji; Hirashima, Dai*; Ikeda, Hiroaki*

We calculate the spin susceptibility and the NMR relaxation rate in the spin-triplet superconducting state of SrRuO. We start with a three-band Hubbard model possessing a realistic electronic structure. The calculated NMR relaxation rate shows Korringa relation above and behavior from just below , without a Hebel-Slichter peak. This temperature dependence is consistent with experiments, but the calculated anisotropy of ( $[1/T_1]_c/[1/T_1]_{ab}$ ) is too small to explain the large experimental value, i.e., about two. We will discuss the anisotropy and the momentum and frequency dependences of . We will investigate also possible spin-wave modes for the same superconducting order parameter in the three-band model.

Language	:	English
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Meeting title	:	Yamada Conference LXI Spectroscopies of Novel Superconductors (SNS 2007)
Held date	:	2007/08
Location (city)	:	Sendai
Location (country)	:	Japan
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Keywords	:	no keyword
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Registration No. : BB20071588
JAEA Abstracts No. :
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