TY - JOUR
T1 - Enhanced Friedel Structure and Proton Pairing in Dense Solid Hydrogen
AU - Nagao, Kazutaka
AU - Bonev, S. A.
AU - Bergara, A.
AU - Ashcroft, N. W.
PY - 2003/1/1
Y1 - 2003/1/1
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.90.035501
DO - 10.1103/PhysRevLett.90.035501
M3 - Article
AN - SCOPUS:21744454466
SN - 0031-9007
VL - 90
JO - Physical Review Letters
JF - Physical Review Letters
IS - 3
ER -