Temperature dependences of the upper critical field and the Ginzburg-Landau parameter of Li2Pd3B from magnetization measurements

Abstract

We present temperature dependences of the upper critical magnetic field and the Ginzburg-Landau parameter for a ternary boride superconductor Li_2Pd_3B obtained from magnetization measurements. A specially developed scaling approach was used for the data analysis. The resulting H_c2(T) curve turns out to be surprisingly close to predictions of the BCS theory. The magnetic field penetration depth, evaluated in this work, is in excellent agreement with recent muon-spin-rotation experiments. We consider this agreement as an important proof of the validity of our approach.

5 pages, 6 figures. Minor changes have been made

References in corpus (8)

• Properties of the Ideal Ginzburg-Landau Vortex Lattice
• Superconductivity in metal rich Li-Pd-B ternary Boride
• Muon-spin-rotation measurements of the penetration depth in Li_2Pd_3B
• Magnetization measurements on Li2Pd3B superconductor
• Temperature dependence of the upper critical field of type-II superconductors from isothermal magnetization data. Application to high temperature superconductors
• Landau and Ott scaling for the kinetic energy density and the low $T_c$ conventional superconductors, $L{i}_{2}P{d}_{3}B$ and Nb
• Temperature dependence of the upper critical field of high-Tc superconductors from isothermal magnetization data. Influence of a temperature dependent Ginzburg-Landau parameter
• Comment on "Enhanced two-dimensional properties of the four-layered cuprate high-Tc superconductor TlBa-2Ca-3Cu-4O-y"

Cited by in corpus (4)

• Vanishing of the upper critical field in Bi_2Sr_2CaCu_2O_{8+δ} from Landau-Ott scaling
• Discovery of Li2(Pd,Pt)3B superconductors
• Critical temperature and upper critical field of Li${}_2$Pd${}_{3-x}$Cu${}_x$B (x=0.0, 0.1, 0.2)superconductors
• Comparison of the scaling analysis of the mixed-state magnetization data with direct measurements of the upper critical field in Y-123