Liu Yong-Kai, Yang Shi-Jie
Chin. Phys. B 2014, 23 (11): 110308
We investigate a kind of solitons in the two-component Bose-Einstein condensates with axisymmetric configurations in the R2× S1 space. The corresponding topological structure is referred to as Hopfion. The spin texture differs from the conventional three-dimensional (3D) skyrmion and knot, whi...

Xu Shu-Yin, Wu Xiao-Yan, Li Yun-Ming, Hu Yong-Sheng, Chen Li-Quan
Chin. Phys. B 2014, 23 (11): 118202
Layered oxides of P2-type Na0.68Cu0.34Mn0.66O2, P2-type Na0.68Cu0.34Mn0.50Ti0.16O2, and O'3-type NaCu0.67Sb0.33O2 were synthesized and evaluated as cathode materials for room-temperature sodium-ion batteries. The first two materials can deliver a capacity of around 70 mAh/g. The Cu2+ is oxidized to ...

Shi Li-Yang, Shen Bo, Yan Jian-Chang, Wang Jun-Xi, Wang Ping
Chin. Phys. B 2014, 23 (11): 116102
By using high-temperature deep-level transient spectroscopy (HT-DLTS) and other electrical measurement techniques, localized deep levels in n-type AlxGa1-xN epitaxial films with various Al compositions (x= 0, 0.14, 0.24, 0.33, and 0.43) have been investigated. It is found that there are three distin...