Activation gap in the specific heat measurements forHe3bilayers
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چکیده
منابع مشابه
on the teacher-generated v.s. leaner-generated noticing-the-gap activities in language classes
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– We show that the specific heat of the superconductor MgB2 in zero field, for which significant non–BCS features have been reported, can be fitted, essentially within experimental error, over the entire range of temperature to Tc by a phenomenological two–gap model. The resulting gap parameters agree with previous determinations from band–structure calculations, and from various spectroscopic ...
متن کاملPhenomenological two – gap model for the specific heat of MgB
F. Bouquet, Y. Wang, R. A. Fisher, D. G. Hinks, J. D. Jorgensen, A. Junod, and N. E. Phillips 1 Département de Physique de la Matière Condensée, Université de Genève – CH–1211 Genève 4 (Switzerland) 2 Lawrence Berkeley National Laboratory and Department of Chemistry, University of California – Berkeley, CA 94720 (USA) 3 Materials Science Division, Argonne National Laboratory – Argonne, IL 60439...
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We present the temperature dependence of the specific heat, without external magnetic field and with 9 T, for LaMnO3, La1.35Sr1.65Mn2O7, La1.5Sr0.5NiO4 and La1.5Sr0.5CoO4 single crystals. We found that spin-wave excitations in the ferromagnetic and bilayer-structure La1.35Sr1.65Mn2O7 were suppressed by the 9 T magnetic field. On the other hand, the external magnetic field had no effect in the s...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2011
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.83.073102