Abstract
We report Si29 NMR study on a single crystal of the heavy-fermion superconductor CeIrSi3 without an inversion symmetry along the c axis. The Si29 Knight-shift measurements under pressure have revealed that the spin susceptibility for the ab plane decreases slightly below Tc, whereas along the c axis it does not change at all. The result can be accounted for by the spin susceptibility in the superconducting state being dominated by the strong antisymmetric (Rashba-type) spin-orbit interaction that originates from the absence of an inversion center along the c axis and it being much larger than superconducting condensation energy. This is the first observation which exhibits an anisotropy of the spin susceptibility below Tc in the noncentrosymmetric superconductor dominated by strong Rashba-type spin-orbit interaction.
| Original language | English |
|---|---|
| Article number | 017002 |
| Journal | Physical Review Letters |
| Volume | 104 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2010 Jan 7 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Spin susceptibility of noncentrosymmetric heavy-fermion superconductor CeIrSi3 under pressure : Si29 knight-shift study on single crystal. / Mukuda, H.; Ohara, T.; Yashima, M.; Kitaoka, Y.; Settai, R.; Onuki, Y.; Itoh, Kohei M; Haller, E. E.
In: Physical Review Letters, Vol. 104, No. 1, 017002, 07.01.2010.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Spin susceptibility of noncentrosymmetric heavy-fermion superconductor CeIrSi3 under pressure
T2 - Si29 knight-shift study on single crystal
AU - Mukuda, H.
AU - Ohara, T.
AU - Yashima, M.
AU - Kitaoka, Y.
AU - Settai, R.
AU - Onuki, Y.
AU - Itoh, Kohei M
AU - Haller, E. E.
PY - 2010/1/7
Y1 - 2010/1/7
N2 - We report Si29 NMR study on a single crystal of the heavy-fermion superconductor CeIrSi3 without an inversion symmetry along the c axis. The Si29 Knight-shift measurements under pressure have revealed that the spin susceptibility for the ab plane decreases slightly below Tc, whereas along the c axis it does not change at all. The result can be accounted for by the spin susceptibility in the superconducting state being dominated by the strong antisymmetric (Rashba-type) spin-orbit interaction that originates from the absence of an inversion center along the c axis and it being much larger than superconducting condensation energy. This is the first observation which exhibits an anisotropy of the spin susceptibility below Tc in the noncentrosymmetric superconductor dominated by strong Rashba-type spin-orbit interaction.
AB - We report Si29 NMR study on a single crystal of the heavy-fermion superconductor CeIrSi3 without an inversion symmetry along the c axis. The Si29 Knight-shift measurements under pressure have revealed that the spin susceptibility for the ab plane decreases slightly below Tc, whereas along the c axis it does not change at all. The result can be accounted for by the spin susceptibility in the superconducting state being dominated by the strong antisymmetric (Rashba-type) spin-orbit interaction that originates from the absence of an inversion center along the c axis and it being much larger than superconducting condensation energy. This is the first observation which exhibits an anisotropy of the spin susceptibility below Tc in the noncentrosymmetric superconductor dominated by strong Rashba-type spin-orbit interaction.
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U2 - 10.1103/PhysRevLett.104.017002
DO - 10.1103/PhysRevLett.104.017002
M3 - Article
AN - SCOPUS:74949123514
VL - 104
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 1
M1 - 017002
ER -