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7
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84927331272
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first showed consistency with s-wave pairing in kappa-[BEDT-TTF]2 Cu[NCS]2, with an effective basal-plane penetration depth of 9800~ A ang (before correcting for finite core size, pinning, motion, and finite l effects).
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29
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84927331270
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measure the intrinsic anisotropic penetration depth of UPt3 in low field. Measurements in higher fields (see Ref. 31) show a dramatic suppression in σ (0) which is a direct result of the intervortex distance, d = (2 φ0/ 3Hext )1/2= 773~ A ang at 4 kG, becoming comparable to the coherence length, ξ0approx 125~ A ang.
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-
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36
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84927331269
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has tabulated the temperature dependence of the weak-coupled BCS function.
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39
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84927331268
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see Fig. 5 therein.
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41
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84927331267
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give estimates of ξb= 174 and ξc= 118~ A ang from the behavior near Tc. However, the extrapolation to zero temperature yields Hc2approx 70 kOe and < ξ > approx 70~ A ang.
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43
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84927331266
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Eq. (6) in the absence of traps.
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50
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4243849348
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Evidence for the role of fluxoids in enhancing NMR spin-lattice relaxation and implications for intrinsic pinning of the flux lattice in organic superconductors
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(1993)
Physical Review Letters
, vol.70
, pp. 2956
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DeSoto, S.M.1
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56
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0027559468
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Reversible-magnetization derived London penetration depth of κ-(BEDT-TTF)2X for X=Cu(NCS)2 and X=Cu[N(CN)2]Br: No indication for unconventional superconductivity
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(1993)
Synthetic Metals
, vol.55-57
, pp. 2401
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Lang, M.1
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57
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84927331265
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compare their value for lambda with our effective value, uncorrected for finite core size, pinning, motion, and finite l effects.
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61
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84927331264
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Subsequent to the work of C. Broholm et al.. (Ref. 16), others (Ref. 36) presented μ+SR data taken in high field (4 kOe) on UPt3. By ignoring the comparatively low sample quality (exhibiting a transition at only approx 0.38 K for | H vecext | = 150 Oe) and low Hc2~(= 21 kOe, for H vecext along c bhat, see Ref. 37), and the expected strong dependence of < ( Δ B)2> on applied field, these authors incorrectly interpret their high-field (4 kOe) data, and claim λ (0) > 10 000~ A ang as representative of the intrinsic penetration depth. After acquiring data at lower fields and using better samples, these authors (Ref. 38) do not mention that the observed strong field dependence of σ (0) is completely explained by finite core size effects (this was also discussed in Ref. 39).
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66
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84927376667
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G. M. Luke et al.
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(1993)
Physica C
, vol.186-188
, pp. 264
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68
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33748550574
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derived the effective mass from the specific-heat jump at Tc, and calculated n2D assuming λ(bc)(0) = 7500 +- 1000~ A ang.
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(1992)
Phys. Rev. B
, vol.45
, pp. 10 684
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Harshman, D.R.1
Mills, A.P.2
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