101 citations · 370 across the 16 of their papers we have counts for
7 papers · 1 filter
Superconductivity and normal state properties of single-crystalline Tl0.47Rb0.34Fe1.63Se2 as seen via 77Se and 87Rb NMR
L. Ma, G. F. Ji, J. Zhang +5
We report both 77Se and 87Rb NMR studies on Tl0.47Rb0.34Fe1.63Se2 single-crystalline superconductors (T_c about 32 K). Singlet superconductivity is decisively determined by a sharp…
77Se NMR Evidence of Strongly Coupled Superconductivity in K0.8Fe2-xSe2
L. Ma, J. B. He, D. M. Wang +2
We report the 77Se NMR Knight shift and spin-lattice relaxation studies on the superconducting state of the ternary iron selenide K0.8Fe2-xSe2 with Tc~30 K. Just below Tc, the Knig…
NMR evidence of strong-correlated superconductivity in LiFeAs: tuning toward an SDW ordering
L. Ma, J. Zhang, G. F. Chen +1
In this letter, we reported the results of NMR study on LiFeAs single crystals. We find a strong evidence of the low temperature spin fluctuations; by changing sample preparation c…
23Na and 75As NMR Studies on NaFeAs0.8P0.2 Single Crystals
L. Ma, J. Zhang, D. M. Wang +4
We report our Na and As NMR studies on isovalent phosphorus-doped NaFeAsP ( 33 K) single crystals. Our data suggest a dramatic enhancement of th…
23Na and 75As NMR Study of Antiferromagnetism and Spin Fluctuations on NaFeAs Single Crystals
L. Ma, G. F. Chen, Dao-Xin Yao +4
We report the Na and As NMR studies on NaFeAs single crystals. The structure transition temperature (55 K) and the spin density wave (SDW) transition temperatur…
Site-dependent NMR Spin-lattice Relaxation in the Superconducting State of an Iron Pnictide Superconductor
L. Ma, J. Zhang, G. F. Chen +4
In a conventional superconductor, the spin-lattice relaxation rate on all nuclei should have the same temperature dependence below Tc. We performed Na, As, and $^{59}…