Cu NQR and NMR Studies of Optimally Doped Ca2-xNaxCuO2Cl2
arXiv:1304.0512 · doi:10.7566/JPSJ.82.055001
Abstract
We report on Cu nuclear quadrupole resonance (NQR) and NMR studies of an optimally hole-doped superconductor Ca2-xNaxCuO2Cl2 (Tc ~ 28 K for x ~ 0.2). In spite of robust oxygen composition, we observed a multiple broad NQR frequency spectrum and nonexponential Cu nuclear spin-lattice relaxation, being similar to those of La2-xSrxCuO4-d.
2 pages, 3 figures; to appear in J. Phys. Soc. Jpn (short note)