An algebraic description of screw dislocations in SC and BCC crystal   lattices
  We give an algebraic description of screw dislocations in a crystal, especially simple cubic (SC) and body centered cubic (BCC) crystals, using free abelian groups and fibering structures. We also show that the strain energy of a screw dislocation based on the spring model is expressed by the Epstein-Hurwitz zeta function approximately. 
Hiroyasu Hamada, Shigeki Matsutani, Junichi Nakagawa, Osamu Saeki,   Masaaki Uesaka
math-ph cond-mat.mes-hall cond-mat.stat-mech math.AG math.AT math.MP