Multipole and superconducting state in PrIr2Zn20 probed by muon spin relaxation

Physical Reviews B Volume 85 Issue 23 Page 235152- published_at 2012
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Title ( eng )
Multipole and superconducting state in PrIr2Zn20 probed by muon spin relaxation
Creator
Higemoto Wataru
Ito Takashi
Ninomiya Kazuhiko
Matsumoto Keisuke
Source Title
Physical Reviews B
Volume 85
Issue 23
Start Page 235152
Abstract
We performed muon spin rotation and relaxation (mu SR) measurements in the caged-structure heavy-fermion system PrIr2Zn20 to elucidate its magnetic and superconducting properties. Temperature-independent mu SR spectra were observed below 1 K, indicating that the phase transition at 0.11 K is of a nonmagnetic origin, most probably pure quadrupole ordering. In the superconducting phase, no sign of unconventional superconductivity, such as superconductivity with broken time-reversal symmetry, was seen below T-c = 0.05 K. We also observed spontaneous muon spin precession in zero field in the paramagnetic phase below 15 K, suggesting that unusual coupling between Pr-141 nuclei and muons is realized in PrIr2Zn20.
NDC
Physics [ 420 ]
Language
eng
Resource Type journal article
Publisher
American Physical Society
Date of Issued 2012
Rights
(c) 2011 American Physical Society
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.85.235152
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.85.235152