Evolution of Paramagnetic Quasiparticle Excitations Emerged in the High-Field Superconducting Phase of CeCoIn5


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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/45274

Title:	Evolution of Paramagnetic Quasiparticle Excitations Emerged in the High-Field Superconducting Phase of CeCoIn5
Authors:	Kumagai, K. Browse this author
	Shishido, H. Browse this author
	Shibauchi, T. Browse this author
	Matsuda, Y. Browse this author
Issue Date:	1-Apr-2011
Publisher:	American Physical Society
Journal Title:	Physical Review Letters
Volume:	106
Issue:	13
Start Page:	137004
Publisher DOI:	10.1103/PhysRevLett.106.137004
PMID:	21517416
Abstract:	We present 115In NMR measurements in a novel thermodynamic phase of CeCoIn5 in a high magnetic field, where exotic superconductivity exists with the incommensurate spin-density wave order. We show that the NMR spectra in this phase provide direct evidence for the emergence of the spatially distributed normal quasiparticle regions. The quantitative analysis for the field evolution of the paramagnetic magnetization and newly emerged low-energy quasiparticle density of states is consistent with the nodal plane formation, which is characterized by an order parameter in the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state. The NMR spectra also suggest that the spatially uniform spin-density wave is induced in the FFLO phase.
Rights:	©2011 American Physical Society
Type:	article
URI:	http://hdl.handle.net/2115/45274
Appears in Collections:	理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 熊谷健一

OAI-PMH ( junii2 , jpcoar_1.0 )

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