Magnetic field effect on the superconducting magnetic gap of Nd{1.85}Ce{0.15}CuO4

Details Magnetic field effect on the superconducting magnetic gap of Nd{1.85}Ce{0.15}CuO4 Magnetic field effect on the superconducting magnetic gap of Nd{1.85}Ce{0.15}CuO4

2006-01-19

arxiv.org/abs/cond-mat/0601424v2

Phys. Rev. Lett. 96, 137002 (2006)

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures; (v2) added reference; published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.96.137002

Inelastic neutron scattering measurements on the archetypical electron-doped material Nd{1.85}Ce{0.15}CuO4 up to high relative magnetic field strength, H/Hc2 ~ 50%, reveal a simple linear magnetic-field effect on the superconducting magnetic gap and the absence of field-induced in-gap states. The extrapolated gap-closing field value is consistent with the upper critical field Hc2, and the high-field response resembles that of the paramagnetic normal state.

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