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Spin-orbit-induced lattice instabilities in the half-filled hopping Hamiltonian

Journal Article · · Physical Review, B: Condensed Matter; (United States)
;  [1]
  1. Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396 (United States)

We compare the effect of a spin-orbit term and a Peierls term on the ground state of the half-filled hopping Hamiltonian. These terms are caused by displacement on the background to the lattice sites (spin-orbit term) and displacement on the actual lattice sites (Peierls term). We show how Peierls-like instabilities can result in either case and explain why the spin-orbit model can be more singular than the Peierls lmodel. We disregard electron-electron interactions and apply our results in two dimensions to La[sub 2]CuO[sub 4].

OSTI ID:
6494633
Journal Information:
Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 51:11; ISSN PRBMDO; ISSN 0163-1829
Country of Publication:
United States
Language:
English