230 citations · 1.2k across the 21 of their papers we have counts for
21 papers
Ultrafast terahertz responses in monolayer graphene
Q. Jin, H. M. Dong, K. Han +1
We theoretically investigate the ultrafast terahertz(THz) properties of monolayer graphene. The analytical formulations of the photon carrier, electric polarization and optical cur…
Angle-resolved photoemission evidence of s-wave superconducting gap in KxFe2-ySe2 superconductor
M. Xu, Q. Q. Ge, R. Peng +7
Although nodeless superconducting gap has been observed on the large Fermi pockets around the zone corner in KxFe2-ySe2, whether its pairing symmetry is s-wave or nodeless d-wave i…
Enhanced Superconductivity by Rare-earth Metal-doping in Phenanthrene
X. F. Wang, X. G. Luo, J. J. Ying +9
We successfully synthesized La- and Sm-doped phenanthrene powder samples and discovered superconductivity at around 6 K in them. The s are 6.1 K for LaPhenan…
Phase diagram as a function of doping level and pressure in EuLaFeAs system
M. Zhang, J. J. Ying, Y. J. Yan +8
We establish the phase diagram of EuLaFeAs system as a function of doping level x and the pressure by measuring the resistivity and magnetic susceptibility. The…
Strong coupling of Sm and Fe magnetism in SmFeAsO as revealed by magnetic x-ray scattering
S. Nandi, Y. Su, Y. Xiao +17
The magnetic structures adopted by the Fe and Sm sublattices in SmFeAsO have been investigated using element specific x-ray resonant and non-resonant magnetic scattering techniques…
On the Structure of Vacancy Ordered Superconducting Alkali Metal Iron Selenide
P. Zavalij, Wei Bao, X. F. Wang +9
With single crystal X-ray diffraction studies, we compare the structures of three sample showing optimal superconductivity, K0.774(4)Fe1.613(2)Se2, K0.738(6)Fe1.631(3)Se2 and Cs0.7…
Common Crystalline and Magnetic Structure of superconducting A2Fe4Se5
F. Ye, S. Chi, Wei Bao +6
Single crystal neutron diffraction study has been performed on new superconductor A2Fe4Se5, where A = Cs, K, (Tl,Rb) and (Tl,K), and the same Fe vacancy ordered crystal structure a…
Out-of-plane momentum and symmetry dependent superconducting gap in Ba0.6K0.4Fe2As2
Y. Zhang, L. X. Yang, F. Chen +10
The three-dimensional band structure and superconducting gap of Ba0.6K0.4Fe2As2 are studied with high-resolution angle-resolved photoemission spectroscopy. In contrast to previous…
Pressure-induced unconventional superconductivity near a quantum critical point in CaFe2As2
S. Kawasaki, T. Tabuchi, X. F. Wang +2
75As-zero-field nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements are performed on CaFe2As2 under pressure. At P = 4.7 and 10.8 kbar, the tempera…
Electronic structure reconstruction: the driving force behind the magnetic and structural transitions in NaFeAs
C. He, Y. Zhang, B. P. Xie +11
The electronic structure of NaFeAs is studied with angle resolved photoemission spectroscopy on high quality single crystals. Large portions of the band structure start to shift ar…
Magnetotransport properties in purple bronze LiMoO Single Crystal
H. Chen, J. J. Ying, Y. L. Xie +3
We have measured resistivity along the a, b and c axes of LiMoO single crystal. The anisotropy / and / is given, confirming the q…
A Large Iron Isotope Effect in SmFeAsO1-xFx and Ba1-xKxFe2As2
R. H. Liu, T. Wu, G. Wu +10
The recent discovery of superconductivity in oxypnictides with the critical temperature (TC) higher than McMillan limit of 39 K (the theoretical maximum predicted by Bardeen-Cooper…
Magnetic phase diagram in EuLaFeAs single crystals
T. Wu, G. Wu, H. Chen +4
We have systematically measured resistivity, susceptibility and specific heat under different magnetic fields (H) in EuLaFeAs single crystals. It is found that…
Magnetotransport in a two-dimensional electron gas in the presence of spin-orbit interaction
X. F. Wang, P. Vasilopoulos
We evaluate the transport coefficients of a two-dimensional electron gas (2DEG) in the presence of a perpendicular magnetic field and of the spin-orbit interaction (SOI) described…
Spin-depedent transmission of holes through periodically modulated diluted magnetic semiconductor waveguides
X. F. Wang, P. Vasilopoulos
We study spin transport of holes through stubless or stubbed waveguides modulated periodically by diluted magnetic semiconductor (DMS) sections of width b1 . Injected holes of up (…
Spin-current modulation and square-wave transmission through periodically stubbed electron waveguides
X. F. Wang, P. Vasilopoulos, F. M. Peeters
Ballistic spin transport through waveguides, with symmetric or asymmetric double stubs attached to them periodically, is studied systematically in the presence of a weak spin-orbit…
Ballistic spin transport through electronic stub tuners: spin precession, selection, and square-wave transmission
X. F. Wang, P. Vasilopoulos, F. M. Peeters
Ballistic spin transport is studied through electronic tuners with double stubs attached to them. The spins precess due to the spin-orbit interaction. Injected polarized spins can…
Tunability of acoustic spectral gaps and transmission in periodically stubbed waveguides
X. F. Wang, M. S. Kushwaha, P. Vasilopoulos
A theoretical investigation is made of acoustic wave propagation in a periodically stubbed waveguide. In general the waveguide segments and stubs are made of different materials. T…
Spin-polarized transport in GaMnAs multilayers
L. Loureiro da Silva, M. A. Boselli, X. F. Wang +2
The spin-dependent mobility for the lateral transport of the hole gas in a GaMnAs/GaAs heterostructure containing several metallic-like ferromagnetic layers is calculated. The elec…
Frictional drag between non-equilibrium charged gases
X. F. Wang, I. C. da Cunha Lima
The frictional drag force between separated but coupled two-dimensional electron gases of different temperatures is studied using the non-equilibrium Green function method based on…
Electron-phonon interaction in CdTe/CdMnTe/CdMgTe quantum wells
X. F. Wang, I. C. da Cunha Lima, A. Troper
The optic vibrational (confined and interface) modes and the electron-phonon and hole-phonon interactions are obtained, in the dielectric continuum model, for two diluted magnetic…