Jia Dai
Renmin University of China
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Jia Dai.
Physical Review Letters | 2013
G. F. Ji; J. Zhang; Long Ma; P. Fan; P. S. Wang; Jia Dai; Guotai Tan; Yu Song; Chenglin Zhang; Pengcheng Dai; B. Normand; Weiqiang Yu
We present a high-pressure NMR study of the overdoped iron pnictide superconductor NaFe0.94Co0.06As. The low-energy antiferromagnetic spin fluctuations in the normal state, manifest as the Curie-Weiss upturn in the spin-lattice relaxation rate 1/(75)T1T, first increase strongly with pressure but fall again at P>Popt=2.2 GPa. Neither long-ranged magnetic order nor a structural phase transition is encountered up to 2.5 GPa. The superconducting transition temperature Tc shows a pressure dependence identical to the spin fluctuations. Our observations demonstrate that magnetic correlations and superconductivity are optimized simultaneously as a function of the electronic structure, thereby supporting very strongly a magnetic origin of superconductivity.
Physical Review Letters | 2012
Long Ma; G. F. Ji; Jia Dai; X. R. Lu; M. J. Eom; J. S. Kim; B. Normand; W. Yu
We use (75)As nuclear magnetic resonance to investigate the local electronic properties of Ba(Fe(1-x)Ru(x))(2)As(2) (x = 0.23). We find two phase transitions: to antiferromagnetism at T(N) ≈ 60 K and to superconductivity at T(C) ≈ 15 K. Below T(N), our data show that the system is fully magnetic, with a commensurate antiferromagnetic structure and a moment of 0.4μ(B)/Fe. The spin-lattice relaxation rate 1/(75)T(1) is large in the magnetic state, indicating a high density of itinerant electrons induced by Ru doping. On cooling below T(C), 1/(75)T(1) on the magnetic sites falls sharply, providing unambiguous evidence for the microscopic coexistence of antiferromagnetism and superconductivity.
Physical Review B | 2011
Long Ma; G. F. Ji; Jia Dai; J. B. He; D. M. Wang; Gang Chen; B. Normand; W. Yu
We report nuclear magnetic resonance (NMR) studies of the intercalated iron selenide superconductor (Tl, Rb)
Physical Review B | 2014
Long Ma; Jia Dai; P. S. Wang; X. R. Lu; Yu Song; Chenglin Zhang; Guotai Tan; Pengcheng Dai; Ding Hu; S. L. Li; B. Normand; Weiqiang Yu
_{y}
Physical Review Letters | 2012
G. F. Ji; M. J. Eom; X. R. Lu; B. Normand; J. S. Kim; W. Yu; Jia Dai; Long Ma
Fe
Chinese Physics B | 2013
Long Ma; Gao-Feng Ji; Jia Dai; Shanta Saha; Tyler Drye; Johnpierre Paglione; W. Yu
_{2-x}
Physical Review Letters | 2012
Long Ma; G. F. Ji; Jia Dai; X. R. Lu; M. J. Eom; J. S. Kim; B. Normand; W. Yu
Se
Bulletin of the American Physical Society | 2018
Tao Xiang; B. Normand; Yi Cui; Jia Dai; Long Ma; Zheng Zhang; Shiyan Li; G. M. Luke; W. Yu
_2
Bulletin of the American Physical Society | 2014
Weiqiang Yu; B. Normand; Long Ma; Jia Dai; G. F. Ji; P. Fan; P. S. Wang; Yu Song; Chenglin Zhang; Pengcheng Dai
(
Bulletin of the American Physical Society | 2013
X. R. Lu; Long Ma; Jia Dai; P. Wang; B. Normand; W. Yu; R.D. Zhong; J. Schneeloch; Z.J. Xu; Genda Gu
T_c = 32
