Anisotropic resistivity and Hall effect in MgB2 single crystals

Abstract

We report resistivity and the Hall effect measurements in the normal and superconducting states of MgB2 single crystal. The resistivity has been found to be anisotropic with slightly temperature dependent resistivity ratio of about 3.5. The Hall constant, with a magnetic field parallel to the Mg and B sheets is negative in contrast to the hole-like Hall response with a field directed along the c-axis indicating presence of both types of charge carriers and, thus, multi-band electronic structure of MgB2. The Hall effect in the mixed state shows no sign change anomaly reproducing the Hall effect behavior in clean limit type-II superconductors.

Minor changed content, 11 pages including 3 figures

References in corpus (5)

• Two-gap superconductivity in MgB${}_2$: clean or dirty?
• Exponential Temperature Dependence of Penetration Depth in Single Crystal MgB_2
• Anisotropic superconducting properties of MgB2 single crystals probed by in-plane electrical transport measurements
• Electronic structure of MgB${}_2$ from angle-resolved photoemission spectroscopy
• de Haas-van Alphen effect in single crystal MgB_2

Cited by in corpus (20)

• Carbon-substitution effect on the electronic properties of MgB${}_2$ single crystals
• Gate tunable giant anisotropic resistance in ultra-thin GaTe
• Resistivity Anisotropy of $AE$Fe${}_2$As${}_2$ ($AE$ =Ca, Sr, Ba): direct versus Montgomery technique measurements
• Critical Current Density and Resistivity of MgB2 Films
• Fully Band Resolved Scattering Rate in MgB2 Revealed by Nonlinear Hall Effect and Magnetoresistance Measurements
• c-axis Raman Scattering in MgB2: Observation of a Dirty-Limit Gap in the pi-bands
• Superconductivity of magnesium diboride
• Anomalous Flux Flow Resistivity in Two Gap Superconductor MgB_2
• Proximity and Josephson effects in microstructures based on multiband superconductors
• Study on the formation of MgB2 phase
• Advances in point-contact spectroscopy: two-band superconductor MgB2 (A review)
• New highly-anisotropic Rh-based Heusler compound for magnetic recording
• Investigation of Magnetic Transport Properties by Wannier Interpolation
• Infrared properties of Mg${}_{1-x}$Al${}_x($B${}_{1-y}$C${}_y$)${}_2$ single crystals in the normal and superconducting state
• Is Li${}_2$Pd${}_3$B a self-doped hole superconductor ?
• Estimation of intraband and interband relative coupling constants from temperature dependences of the order parameter for two-gap superconductors
• Direction dependent switching of carrier-type enabled by Fermi surface geometry
• Influence of carbon on intraband scattering in Mg(B1-xCx)2
• Strong phase coherence and vortex matter in a fractal system with proximity-induced superconductivity
• Magnetic and electric properties of the metallic kagome antiferromagnet CrRhAs