Hongjun Xiang

TL;DR: It is reported that the Kondo effect exerted by a magnetic ion depends on its chemical environment and is attributed to the small on-site Coulomb repulsion and the large half-width of the hybridized d-level.

TL;DR: A novel 1D/1D nanocomposite-based photodetector is successfully fabricated from high-crystalline ZnS/ZnO biaxial nanobelts for the first time, with a wide-range UV-A light photoresponse, high sensitivity, and very fast response speed.

TL;DR: It is found that acceptor doping, especially doping at the anion site, can enhance the ferromagnetism with much smaller threshold hole concentrations, and the quantum confinement effect also reduces the critical hole concentration to induce ferromaggnetism in ZnO nanowires.

TL;DR: It is shown that the spin orientation of a transition-metal magnetic ion can be easily explained by considering its split d-block levels as unperturbed states with the spin-orbit coupling as perturbation, and that the DM exchange between adjacent spin sites can become comparable in strength to the Heisenberg spin exchange when the two spin sites are not chemically equivalent.

TL;DR: In this article, the authors showed that there is a large disparity between the defects in Cu-and Ag-based kesterite semiconductors, i.e., the CuZn or CuCd acceptor defects have high concentration and are the dominant defects in either Cu2ZnSn(S,Se)4 or Cu2CdSnS4.