1943/01/01 by G. Koutroulakis, V. F. Mitrović, M. Horvatić +4 · 1 citation
Arts and Humanities · Materials Science · Physics and Astronomy · Social Sciences · #Basque language and culture studies #Comparative Literary Analysis and Criticism #Iron-based superconductors research #Medieval European Literature and History #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.101.047004
published as Phys. Rev. Lett. 101, 047004 (2008) · 4 pages, to appear in Phys. Rev. Lett
openalex publication_date 1943/01/01 · arxiv created 2008/06/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/06/22
We report 115In nuclear magnetic resonance (NMR) measurements in CeCoIn5 at low temperature (T approximately 70 mK) as a function of the magnetic field (H0) from 2 to 13.5 T applied perpendicular to the c axis. A NMR line shift reveals that below 10 T the spin susceptibility increases as sqrt[H0]. We associate this with an increase of the density of states due to the Zeeman and Doppler-shifted quasiparticles extended outside the vortex cores in a d-wave superconductor. Above 10 T a new superconducting state is stabilized, possibly the modulated phase predicted by Fulde, Ferrell, Larkin, and Ovchinnikov. This phase is clearly identified by a strong and linear increase of the NMR shift with the field, before a jump at the first order transition to the normal state.