BEIJING, Jan. 4 (Xinhua) -- The China-BRICS New Quality Productive Forces Research Center has opened in Beijing, according to the Ministry of Science and Technology on Sunday. The center will be an ...

Key projects such as the China-Russia Eastern Route Natural Gas Pipeline, the Heihe Highway Bridge and the Tongjiang Railway Bridge have been advancing smoothly. Visa-free policy between the two ...

As the world moves toward 2026, multiple economic cycles and structural shifts are converging. Global growth remains uneven, ...

多类拓扑半金属在拓扑带交叉处具有相反手性的费米子。拓扑系统中的手性费米子输运通常依赖于强磁场或磁掺杂剂来抑制平凡输运，并造成相反陈数态占据数的不平衡。 研究组利用拓扑带的量子几何特性，通过手性将费米子滤入不同的陈数极化态。这实现了具有相反手性的费米子电流在实空间中分离，通过观察其在无外加磁场条件下的量子干涉，研究组证明了这一点。 由单晶PdGa制成的三臂构型器件表现出量子几何诱导的手性费米子异常速 ...