Welcome to the Neutron Scattering Group!
We were established in the year of 2013 when the PI returned from USA. We are utilizing neutron scattering technique combined with other probes such as X-ray scattering and transport to study the strongly correlated electronic systems, and synthesizing large-size high-quality samples. Please contact us for any questions or collaboration opportunities.
Papers published as tributes to the Centenary of our Physics Department
Our group published a paper titled "Magnetic neutron scattering studies on the Fe-based superconductor system Fe1+yTe1-xSex" on Annals of Physics as a tribute to the centenary of our Physics Department. The Chinese version of the article was published on Acta Physics Sinica. In this paper, we present a brief overview on the interplay between magnetism and superconductivity in one of the Fe-based superconductor systems, Fe1+yTe1-xSex. We conclude that magnetism and superconductivity in this system couple to each other closely, while the static magnetic order around (0.5, 0) competes with superconductivity, the spin excitations around (0.5, 0.5) may be an important ingredient for it. We also discuss the nature of magnetism and substitution effects of 3d transition metals.
Effects of 3d transition metal substitution in the Fe-based superconductors
Our group published a paper titled "Substitution of Ni for Fe in superconducting Fe0.98Te0.5Se0.5 depresses the normal-state conductivity but not the magnetic spectral weight" on PRB. In this work, we study the Ni-substitution effects on the electronic and magnetic properties of an Fe-based superconductor Fe0.98Te0.5Se0.5. Together with our previous paper on the Cu-doping effects [PRB 88, 144509 (2013)], we provide a complete picture on the 3d transition metal substitution effects in the Fe-based superconductors---that is, the impact is more depe ndent on the scattering potential of the substituent, and in the extreme case such as Cu, the main effect of the substitution is to localize the itinerant electrons. This conclusion also seems to be applicable to other Fe-based superconductor systems, such as 122 and 111. Jinghui has been the leading author of the paper. This is his first paper. Congratulations on him!
Congratulations on Jinghui and Kejing for their scholarships!
Jinghui Wang and Kejing Ran have been awarded the "Excellent New Graduate Student Scholarship". Congratulations on them!
China Neutron Scattering Conference
Prof. Wen and Shichao attended the First China Neutron Scattering Conference in Dongguan, Guangdong, where the China Spallation Neutron Source (CSNS) is being built. Prof. Wen gave an invited talk advertising the group and presenting the research results. Shichao toured the construction site of the CSNS.