Quasi-Static Internal Magnetic Field Detected in the Pseudogap Phase of Bi2+xSr2−xCaCu2O8+δ by μSR
ORAL
Abstract
We report muon spin relaxation (μSR) measurements of optimally-doped and overdoped Bi2+xSr2−xCaCu2O8+δ (Bi2212) single crystals that reveal the presence of a weak temperature dependent quasi-static internal magnetic field of electronic origin in the superconducting (SC) and pseudogap (PG) phases. In both samples the internal magnetic field persists up to 160 K, but muon diffusion prevents following the evolution of the field to higher temperatures. We consider the evidence from our measurments in support of PG order parameter candidates, namely, electronic loop currents and magnetoelectric quadrupoles.
*The present work was partially supported by CIFAR, NSERC, and JSPS KAKENHI Grant Number JP15K17712
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Presenters
Sarah Dunsiger
Simon Fraser University
Physics, Simon Fraser University
Department of Physics, Simon Fraser University
Authors
Anand Pal
Department of Physics, Simon Fraser University
Sarah Dunsiger
Simon Fraser University
Physics, Simon Fraser University
Department of Physics, Simon Fraser University
Kolawole Akintola
Department of Physics, Simon Fraser University
Alex Fang
Physics, Simon Fraser University
Department of Physics, Simon Fraser University
Abdo Elhosary
Department of Physics, Simon Fraser University
Motoyuki Ishikado
Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS)
Hiroshi Eisaki
IAIST
Inst. of Advanced Industrial Science and Tech., Tsukuba,
National Institute for Advanced Industrial Science and Technology
National Institute of Advanced Industrial Science and Technology
Electronics and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology
