46 citations · 121 across the 15 of their papers we have counts for
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Quest for nuclear quadrupole relaxation in HgCaBaCuO
Yutaka Itoh, Akihiro Ogawa, Seiji Adachi
We derived a simple reduced form from the exact solution of the mixed magnetic and quadrupolar nuclear spin--lattice relaxation function at the central transition line of a quadrup…
Spectral Distribution of Cu Nuclear Spin-Lattice Relaxation Time in Superconducting Bi2Sr2CaCu2O8+d
Y. Itoh, D. Goto, T. Machi
We successfully observed the frequency distribution of Cu nuclear spin-lattice relaxation time in the superconducting state of single crystals Bi2212, which we believe corresponds…
Cu NQR and NMR Studies of Optimally Doped Ca2-xNaxCuO2Cl2
Y. Itoh, T. Machi, I. Yamada +2
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 comp…
59Co, 23Na, and 1H NMR Studies of Double-Layer Hydrated Superconductors NaxCoO2-yH2O
Y. Itoh, H. Ohta, C. Michioka +2
We present our NMR studies of double-layer hydrated cobalt oxides NaxCoO2-yH2O (x ~ 0.35, y ~ 1.3) with various Tc = 0 - 4.8 K and magnetic transition temperatures. High-resolution…
Zn-Neighbor Cu NQR in Zn-Substituted YBa2Cu3O7-d and YBa2Cu4O8
Y. Itoh, T. Machi, C. Kasai +4
We studied local electronic states near Zn in optimally doped YBa(CuZn_x)O and underdoped YBa(CuZn_x)O via satellite signals of plane-si…
Ni-substituted sites and the effect on Cu electron spin dynamics of YBa2Cu{3-x}NixO{7-δ}
Y. Itoh, S. Adachi, T. Machi +2
We report Cu nuclear quadrupole resonance experiment on magnetic impurity Ni-substituted YBaCuNiO. The distribution of Ni-substituted sites and its effect o…
Zn-doping dependence of the wipeout region around Zn in YBa2(Cu1-xZnx)4O8
Y. Itoh, T. Machi, N. Watanabe +3
We estimated the spread of the magnetically enhanced regions (wipeout regions) around Zn ions in high-Tc superconductors YBa2(Cu1-xZnx)4O8 (x=0, 0.005, 0.01, and 0.022) at T=4.2 K,…
Cu Nuclear Quadrupole Resonance Study of Site-Disorder and Chemical Pressure Effects on Y(Ba1-xSrx)2Cu4O8
Y. Itoh, S. Adachi, T. Machi +1
We report a zero-field Cu nuclear quadrupole resonance (NQR) study on the effects of nonmagnetic Sr substitution for high-Tc superconductors, Y(Ba1-xSrx)2Cu4O8 (Tc=82-80 K for x=0-…
Spin Dynamics near the Superconductor-to-Insulator Transition in Impurity-Doped YBa2Cu4O8
Y. Itoh, T. Machi, N. Watanabe +2
We studied low-frequency spin dynamics near the impurity-induced superconductor-to-insulator transition for underdoped high-Tc superconductor YBa2(Cu1-xMx)4O8 (M=Ni, Zn) using the…
Cu NQR study of host and guest spin dynamics in impurity-doped YBa2Cu4O8
Y. Itoh, T. Machi, N. Watanabe +1
We present the planar 63Cu nuclear spin-lattice relaxation study of impurity-doped YBa2(Cu1-xMx)4O8 (M=Ni, Zn) at T=4.2-300 K with Cu nuclear quadrupole resonance (NQR) spin-echo t…