We have measured the electrical resistance R vs temperature T in different perpendicular magnetic fields on Nb/CuMn multilayers. The samples had constant Nb layer thickness ({~}230 {}) and CuMn layer thicknesses in the range 4--50 {}. Below the zero-field superconducting critical temperature Tc, the (lnR vs 1/T) curves showed a sharp change in the slope at magnetic-field-dependent temperatures T*(H). The T* vs H curves are consistent with vortex-lattice melting, mainly due to quantum fluctuations. {} 1996 The American Physical Society.
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Attanasio et al. (1996) studied this question.
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