文献Effective potentials for simulations of the thermal conductivity of type-I semiconductor clathrate systems中给出对势计算公式
The potential is defined as
φ(r) = C1/rη1+ C2*cos(kr + ϕ /rη2 (7) with six free parameters C1,2, η1,2, k, and ϕ.
公式中有6个参数,可参考文献29给出的附件中对势给出7个参数,第七个参数h是怎么回事?
附件网址http://link.aps.org/supplemental/10.1103/PhysRevB.89.214306