Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/97339
Type: Artigo de periódico
Title: Complex Mixed State Of The Pauli-limited Superconductor Cecoin 5
Author: Gratens X.
Mendonca-Ferreira L.
Kopelevich Y.
Oliveira N.F.
Urbano R.R.
Ribeiro R.A.
Movshovich R.
Sarrao J.L.
Thompson J.D.
Fisk Z.
Pagliuso P.G.
Abstract: Magnetization measurements were performed on CeCoIn 5 at temperatures down to 20 mK and magnetic fields up to 17 T applied along different crystallographic orientations. For field configurations nearly parallel to the ab plane (θ 40 and T≤50mK), we have found an intriguing vortex dynamics regime revealed by a hysteretic and metastable anomalous peak effect (APE), which gives evidence of surface barrier effects enhanced by antiferromagnetic fluctuations in the mixed state of CeCoIn 5. Furthermore, we have observed crossover features in the torque and magnetization traces at fields below H c2, which are consistent with vortices lattice phase transitions and with the anomalies speculated to be the Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) superconducting state in CeCoIn 5. All of the above features were found to be dramatically perturbed in Ce 0.98Gd 0.02CoIn 5. © 2012 American Physical Society.
Editor: 
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.85.054502
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84863396285&partnerID=40&md5=6b11f1c5be3e3f052b4327e91ae3abfd
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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