Home
For authors
Submission status

Current
Archive (English)
Archive
   Volumes 81-92
   Volumes 41-60
   Volumes 21-40
   Volumes 1-20
   Volumes 61-80
      Volume 80
      Volume 79
      Volume 78
      Volume 77
      Volume 76
      Volume 75
      Volume 74
      Volume 73
      Volume 72
      Volume 71
      Volume 70
      Volume 69
      Volume 68
      Volume 67
      Volume 66
      Volume 65
      Volume 64
      Volume 63
      Volume 62
      Volume 61
Search
VOLUME 80 | ISSUE 4 | PAGE 294
Investigation of the field-tuned quantum critical point in CeCoIn5
V. R. Shaginyan
Petersburg Nuclear Physics Institute RAS, 188300 Gatchina, Russia

PACS: 71.10.Hf, 71.27.+a, 74.72.-h
Abstract
The main properties and the type of the field-tuned quantum critical point in the heavy-fermion metal CeCoIn5 arisen upon applying magnetic fields B are considered within the scenario based on the fermion condensation quantum phase transition. We analyze the behavior of the effective mass, resistivity, specific heat, charge and heat transport as functions of applied magnetic fields B and show that in the Landau Fermi liquid regime these quantities demonstrate the critical behavior which is scaled by the critical behavior of the effective mass. We show that in the high-field non-Fermi liquid regime, the effective mass exhibits very specific behavior, M^*\sim
T^{-2/3}, and the resistivity demonstrates the T2/3 dependence. Finally, at elevated temperatures, it changes to M^*\sim T^{-1/2}, while the resistivity becomes linear in T. In zero magnetic field, the effective mass is controlled by temperature T, and the resistivity is also linear in T. The obtained results are in good agreement with recent experimental facts.


Download PS file (GZipped, 53.9K)  |  Download PDF file (143.9K)