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28 papers · 1 filter
Heavily electron-doped electronic structure and isotropic superconducting gap in AxFe2Se2 (A=K,Cs)
Y. Zhang, L. X. Yang, M. Xu +10
The low energy band structure and Fermi surface of the newly discovered superconductor, AxFe2Se2 (A=K,Cs), have been studied by angle-resolved photoemission spectroscopy. Compared…
Magnetism in C or N-doped MgO and ZnO: density-functional study of impurity pairs
Hua Wu, Alessandro Stroppa, Sung Sakong +3
It is shown that substitution of C or N for O recently proposed as a way to create ferromagnetism in otherwise nonmagnetic oxide insulators is curtailed by formation of impurity pa…
A Liouville Theorem for the Axially-symmetric Navier-Stokes Equations
Zhen Lei, Qi S. Zhang
Let be a solution to the three-dimensional incompressible axially-symmetric Navier-Stokes equations. Denote by the radi…
Ultrafast carrier and phonon dynamics in Bi2Se3 crystals
J. Qi, X. Chen, W. Yu +9
Ultrafast time-resolved differential reflectivity of Bi2Se3 crystals is studied using optical pump-probe spectroscopy. Three distinct relaxation processes are found to contribute t…
Spin dependent electron-phonon interaction in SmFeAsO by low-temperature Raman spectroscopy
L. Zhang, P. F. Guan, D. L. Feng +3
The interplay between spin dynamics and lattice vibration has been suggested as an important part of the puzzle of high-temperature superconductivity. Here we report the strong int…
Single Impurity In Ultracold Fermi Superfluids
Lei Jiang, Leslie O. Baksmaty, Hui Hu +2
The role of impurities as experimental probes in the detection of quantum material properties is well appreciated. Here we study the effect of a single classical magnetic impurity…