Magnetic-field-induced macroscopic quantum phenomenon in a superconductor with gap nodes

G. Varelogiannis; M. Héritier

doi:10.1103/PhysRevB.72.054515

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Magnetic-field-induced macroscopic quantum phenomenon in a superconductor with gap nodes

G. Varelogiannis, M. Héritier

DOI 10.1103/PhysRevB.72.054515 · Physical Review B

T1

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Abstract

We propose the existence of a macroscopic quantum phenomenon induced by a magnetic field in unconventional superconductors. It corresponds to the noninteger quantization of the superfluid density in a superconductor with gap nodes due to the generation of confined field-induced density waves (CFIDW) over a portion of the Fermi surface (FS). The Landau numbers L are not sufficient to index these macroscopic quantum states and new quantum numbers ζ must be added. Distinct qualitative implications of this ∣L,ζ⟩ quantization are evident in a number of puzzling experiments in high-Tc cuprates including the plateaus behavior in the field profile of thermal conductivity, field-induced magnetic moments, charge textures around the vortices, and field-induced vortex-solid to cascade vortex glass transitions.

Source-reported materials — not catalogue approval

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