New high field state of flux line lattice in CeCoIn5

Y. Kasahara, T. Watanabe, K. Izawa, T. Sakakibara, C. J. Van Der Beek, T. Hanaguri, Minoru Nohara, H. Takagi, H. Shishido, R. Settai, Y. Onuki, Y. Matsuda

Research output: Contribution to journalArticle

Abstract

We have measured the ultrasound velocity of quasi-two-dimensional superconductor CeCoIn5 with extremely large Pauli paramagnetic susceptibility. The results indicate that the new high field superconducting phase, which is revealed by the recent heat capacity measurements, is characterized by the unusual softening of flux line lattice. The softening is most likely due to the collapse of the flux line lattice tilt modulus and transition to quasi-two-dimensional vortex state. These results provide a strong evidence that the high field phase is the Fulde-Ferrell-Larkin-Ovchinnikov phase, in which the order parameter is spatially modulated and has planar nodes aligned perpendicularly to the vortices.

Original languageEnglish
Pages (from-to)36-40
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume426-431
Issue numberI
DOIs
Publication statusPublished - Oct 1 2005
Externally publishedYes

Fingerprint

softening
Vortex flow
vortices
Fluxes
Superconducting materials
Specific heat
Ultrasonics
specific heat
magnetic permeability

Keywords

  • CeCoIn
  • FFLO state
  • Flux line lattice
  • Ultrasound velocity

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Kasahara, Y., Watanabe, T., Izawa, K., Sakakibara, T., Van Der Beek, C. J., Hanaguri, T., ... Matsuda, Y. (2005). New high field state of flux line lattice in CeCoIn5. Physica C: Superconductivity and its Applications, 426-431(I), 36-40. https://doi.org/10.1016/j.physc.2005.02.018

New high field state of flux line lattice in CeCoIn5. / Kasahara, Y.; Watanabe, T.; Izawa, K.; Sakakibara, T.; Van Der Beek, C. J.; Hanaguri, T.; Nohara, Minoru; Takagi, H.; Shishido, H.; Settai, R.; Onuki, Y.; Matsuda, Y.

In: Physica C: Superconductivity and its Applications, Vol. 426-431, No. I, 01.10.2005, p. 36-40.

Research output: Contribution to journalArticle

Kasahara, Y, Watanabe, T, Izawa, K, Sakakibara, T, Van Der Beek, CJ, Hanaguri, T, Nohara, M, Takagi, H, Shishido, H, Settai, R, Onuki, Y & Matsuda, Y 2005, 'New high field state of flux line lattice in CeCoIn5', Physica C: Superconductivity and its Applications, vol. 426-431, no. I, pp. 36-40. https://doi.org/10.1016/j.physc.2005.02.018
Kasahara Y, Watanabe T, Izawa K, Sakakibara T, Van Der Beek CJ, Hanaguri T et al. New high field state of flux line lattice in CeCoIn5. Physica C: Superconductivity and its Applications. 2005 Oct 1;426-431(I):36-40. https://doi.org/10.1016/j.physc.2005.02.018
Kasahara, Y. ; Watanabe, T. ; Izawa, K. ; Sakakibara, T. ; Van Der Beek, C. J. ; Hanaguri, T. ; Nohara, Minoru ; Takagi, H. ; Shishido, H. ; Settai, R. ; Onuki, Y. ; Matsuda, Y. / New high field state of flux line lattice in CeCoIn5. In: Physica C: Superconductivity and its Applications. 2005 ; Vol. 426-431, No. I. pp. 36-40.
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