Details

Autor(en) / Beteiligte

• Nagao, Kazutaka
• Bonev, S A
• Bergara, A
• Ashcroft, N W

Titel

Enhanced Friedel structure and proton pairing in dense solid hydrogen

Ist Teil von

• Physical review letters, 2003-01, Vol.90 (3), p.035501-035501

Ort / Verlag

United States

Erscheinungsjahr

2003

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The mechanism of proton pairing in dense solid hydrogen, and its progression with density, are both studied using effective potentials between protons which include electronic response up to quadratic terms. For high pressures nonlinear effects originating with different pairs are crucial in establishing the net attraction within a given pair, and in this picture Friedel oscillations are considerably enhanced by quadratic response, subsequently playing a very important role in the overall pairing. Calculated vibron frequencies also show substantial agreement with experiment, reflecting at the same time significant changes in the physical character of the pairing itself.