Imperial College London


Faculty of Natural SciencesDepartment of Physics

Visiting Researcher







B804Blackett LaboratorySouth Kensington Campus





Publication Type

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Davies PAG, Foulkes WMC, 2018, A two-phase Hessian approach improves the DFT relaxation of slabs, Journal of Physics: Condensed Matter, Vol: 30, Pages: 315901-315901, ISSN: 0953-8984

A two-phase Hessian approach to DFT slab relaxation of slabs has been implemented and tested. It addresses weaknesses in the modified Broyden and Pfrommer BFGS algorithms specific to relaxing slabs. Complete Hessian and then inverse Hessian matrices with no strain/stress components are first constructed at high force signal-to-noise ratios with no accompanying relaxation. In a second phase the static inverse Hessian is used to relax the slab down to a low force tolerance.

Journal article

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