TY - JOUR
T1 - Anisotropic magnetic response in the superconducting mixed state of UPt3
AU - Tenya, K.
AU - Ikeda, M.
AU - Tayama, T.
AU - Sakakibara, T.
AU - Yamamoto, E.
AU - Maezawa, K.
AU - Kimura, N.
AU - Settai, R.
AU - Ōnuki, Y.
PY - 1996
Y1 - 1996
N2 - Equilibrium magnetization Meq of the superconducting mixed state of UPt3 has been measured as a function of field. At low temperatures, the discontinuity of dMeq/dH at the upper critical field Hc2 exhibits marked anisotropy between the two principal directions of the hexagonal crystal, being indiscernibly small for H ⊥ c, where the normal state paramagnetic susceptibility is largest. The results are not simply explained by the effective mass anisotropy nor by the ordinary paramagnetic effect of a spin-singlet pairing; they are rather in favor of an odd-parity pairing with an appreciable anisotropy in the pair-spin correlation.
AB - Equilibrium magnetization Meq of the superconducting mixed state of UPt3 has been measured as a function of field. At low temperatures, the discontinuity of dMeq/dH at the upper critical field Hc2 exhibits marked anisotropy between the two principal directions of the hexagonal crystal, being indiscernibly small for H ⊥ c, where the normal state paramagnetic susceptibility is largest. The results are not simply explained by the effective mass anisotropy nor by the ordinary paramagnetic effect of a spin-singlet pairing; they are rather in favor of an odd-parity pairing with an appreciable anisotropy in the pair-spin correlation.
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U2 - 10.1103/PhysRevLett.77.3193
DO - 10.1103/PhysRevLett.77.3193
M3 - Article
AN - SCOPUS:0030573870
SN - 0031-9007
VL - 77
SP - 3193
EP - 3196
JO - Physical Review Letters
JF - Physical Review Letters
IS - 15
ER -