Pauschenwein Gernot J, Kahl Gerhard
Center for Computational (CMS) Materials Science and Institut für Theoretische Physik, Technische Universität Wien, Wiedner Hauptstrasse 8-10, A-1040 Wien, Austria. arsenal research, Sustainable Energy Systems, Giefinggasse 2, A-1210 Wien, Austria.
J Phys Condens Matter. 2009 Nov 25;21(47):474202. doi: 10.1088/0953-8984/21/47/474202. Epub 2009 Nov 5.
The hard core Yukawa system, consisting of particles with an impenetrable core and interacting via a repulsive Yukawa pair potential, is known to solidify either in a bcc or fcc crystal. Using optimization strategies based on genetic algorithms we give evidence that at zero temperature an additional centred tetragonal phase structure in the range of high packing fractions emerges.
硬核汤川系统由具有不可穿透核心且通过排斥性汤川对势相互作用的粒子组成，已知其会凝固成体心立方（bcc）或面心立方（fcc）晶体。我们运用基于遗传算法的优化策略证明，在零温度下，在高填充率范围内会出现一种额外的体心四方相结构。
