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I am dealing with thin film and LN2 temperature, and am trying to calculate values such as the Pearl Length, but am trying to find clarification as to which value of $\lambda_L$ to use in this case. e.g.

$\lambda_L(t,T)$ with T = 0 or T = 77K?

I have other formula, such as the kinetic inductance for a CPW, but the articles I am pulling them from are somewhat unclear which forms of the parameters they are using. Any help is appreciated.

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CPW = Co-Planar Waveguide? – Qmechanic♦ Apr 22 at 7:37

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Well LN2 boils at 77K - If you want the penetration depth at LN2 temperatures, use T=77K

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This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post. – Sklivvz♦ Dec 9 '12 at 12:03
I did answer his question (as I understood it). He asks what his temperature parameter should be for calculating the penetration depth, 0K or 77K. Since he is at LN2 temperatures, he should use 77K ... – Brendan Dec 9 '12 at 16:14

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