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

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 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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E. M. Motoyama, P. K. Mang, D. Petitgrand, G. Yu, O. P. Vajk, I. M. Vishik, M. Greven. 2006-04-12. Magnetic field effect on the superconducting magnetic gap of Nd{1.85}Ce{0.15}CuO4. https://doi.org/10.1103/physrevlett.96.137002

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