Magnetic field effect on the superconducting magnetic gap of Nd1.85Ce0.15CuO4

E. M. Motoyama, P. K. Mang, D. Petitgrand, G. Yu, O. P. Vajk, I. M. Vishik, M. Greven

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Abstract

Inelastic neutron-scattering measurements on the archetypical electron-doped material Nd1.85Ce0.15CuO4 up to a 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.

Original languageEnglish (US)
Article number137002
JournalPhysical Review Letters
Volume96
Issue number13
DOIs
StatePublished - Apr 20 2006

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