The Average Kinetic Energy of the Superconducting State
نویسنده
چکیده
Isothermal magnetization curves are plotted as the magnetization times the magnetic induction, 4πM · B, versus the applied field, H. We show here that this new curve is the average kinetic energy of the superconducting state versus the applied field, for type-II superconductors with a high GinzburgLandau parameter κ. The maximum of 4πM · B occurs at a field, H∗, directly related to the upper critical field, Hc2, suggesting that Hc2(T ) may be extracted from such plots even in cases when it is too high for direct measurement. We obtain these plots both theoretically, from the Ginzburg-Landau theory, and experimentally, using a Niobium sample with Tc = 8.5 K, and compare them. 74.25.Ha, 74.25.Bt, 74.25.Fy Typeset using REVTEX
منابع مشابه
خواص ترابردی مغناطیسی واثر هال در نمونه هایGdpr-123
Single phase polycrystalline Gd1-xPrxBa2Cu3O7-δ samples with x=0.05 , 0.10, and 0.15 have been prepared by standard solid state reaction technique and characterized by XRD and SEM analysis. The electrical resistivity, Hall effect and magnetoresistance measurements have been on the samples. The electrical resistivity measurements indicate a reduction of transition temperature (Tc) and an incre...
متن کاملSuperconducting Microstrip-Fed Antenna Coupled to a Microwave Kinetic Inductance Detector
A proper antenna to couple to a microstrip Microwave Kinetic Inductance Detector (MKID) is designed and simulated. A twin-slot microstrip-fed inline antenna is designed for frequency band of 600-720~GHz integrated with an elliptical lens and coupled to the MKID. A systematic design procedure for design of such antenna with microstrip inline feeding is presented. Whole structure of lens and twin...
متن کاملمطالعه سه گانه سینتیکی واکنش تجزیه شدن حرارتی ماده منفجره اکفل به روش آنالیز حرارتی دیفرانسیلی غیر همدما
One of the characteristics of solid organic compounds and especially organic explosives is thermal behavior and kinetic of thermal decomposition. The activation energy, Arrhenius constant and model of solid state reaction as kinetic triplet can be obtained by study thermal decomposition kinetic in a solid state reaction. In the present work, the non-isothermal differential thermal analysis (DTA...
متن کاملدینامیک شار در ابررسانای Y3Ba5Cu8O18
We have studied the thermally activated flux creep of a newly fabricated superconductor Y3Ba5Cu8O18 with the superconducting transition temperature 102 K. Analysis of the transition spread from the normal state to superconducting state in the electrical resistivity revealed that the thermally activated flux creep explains the electron share in the vicinity of the transition temperature Tc. The ...
متن کاملElectronic structure of kinetic energy driven cuprate superconductors
In this paper, we review the low energy electronic structure of the kinetic energy driven d-wave cuprate superconductors. We give a general description of the chargespin separation fermion-spin theory, where the constrained electron is decoupled as the gauge invariant dressed holon and spin. In particular, we show that under the decoupling scheme, the charge-spin separation fermion-spin represe...
متن کامل