In-plane and transverse superconducting fluctuation diamagnetism in the presence of charge-density waves in 2H−NbSe2 single crystals

F. Soto; H. Berger; L. Cabo; C. Carballeira; J. Mosqueira; D. Pavuna; F. Vidal

doi:10.1103/PhysRevB.75.094509

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In-plane and transverse superconducting fluctuation diamagnetism in the presence of charge-density waves in 2H−NbSe2 single crystals

F. Soto, H. Berger, L. Cabo, C. Carballeira, J. Mosqueira, D. Pavuna, F. Vidal

DOI 10.1103/PhysRevB.75.094509 · Physical Review B

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Abstract

The fluctuation-diamagnetism (FD) above the superconducting transition was measured in 2H−NbSe2 single crystals. The moderate uniaxial anisotropy of this compound, and some experimental improvements, allowed us to measure the superconducting fluctuation effects in the two main crystallographic directions. These results reveal that the nonlocal electrodynamic effects on the FD are highly anisotropic, and they also discard a possible contribution to the FD coming from the charge-density waves (CDWs) appearing below TCDW>TC in 2H−NbSe2, in agreement with a phenomenological estimate.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	7.15	Pressure not reported	onset
NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	7.15	Pressure not reported	onset
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown