Penetration Depth and Anisotropy in MgB2

Abstract

The penetration depth lambda of MgB2 was deduced from both the ac susceptibility chi and the magnetization M(H) of sorted powders. The good agreement between the two sets of data without geometric correction for the grain orientation suggests that MgB2 is an isotropic superconductor.

9 pages, 5 figures; submitted to Physical Review B (February 28, 2001; revised June 28, 2001); reference list updated

References in corpus (7)

• Superconductivity of metallic boron in MgB_2
• Boron Isotope Effect in Superconducting MgB${}_2$
• Superconductivity in Dense $Mg{B}_2$ Wires
• Thermodynamic and Transport Properties of Superconducting $M{g}^{10}{B}_2$
• Superconducting Properties of MgB2 Bulk Materials Prepared by High Pressure Sintering
• High Pressure Study on MgB2
• Hole carrier in MgB_{2} characterized by Hall Measurements

Cited by in corpus (12)

• Direct evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy
• Exponential Temperature Dependence of Penetration Depth in Single Crystal MgB_2
• Superconducting Quantum Interference Device based on MgB2 nanobridges
• Temperature-dependent $H_{c2}$ anisotropy in MgB${}_2$ as inferred from measurements on polycrystals
• Energy gap, penetration depth and surface resistance of MgB2 thin films determined by microwave resonator mesurements
• Anisotropy parameters of superconducting MgB${}_2$
• Quasiparticle Excitations outside the Vortex Cores in MgB${}_2$ Probed by Muon Spin Rotation
• The Superconductivity, Intragrain Penetration Depth and Meissner Effect of RuSr2(Gd,Ce)2Cu2O10+delta
• Ginzburg-Landau theory of the superheating field anisotropy of layered superconductors
• Grain size determination of superconducting MgB2 powders from magnetization curve, image analysis and surface area measurement
• Penetration depth and gap structure in the antiperovskite oxide superconductor Sr${}_{3-x}$SnO revealed by $\mu$SR
• The study on penetration depth of anisotropic two-band s-wave superconductors by Ginzburg-Landau approach