Permanent polarization of small metallic particles

Details Permanent polarization of small metallic particles Permanent polarization of small metallic particles

2007-02-22

arxiv.org/abs/cond-mat/0702532v3

Phys. Rev. B 76, 041401(R) (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 2 figures; synchronized with journal version

Scientific paper

10.1103/PhysRevB.76.041401

Electric charge density in a metallic nanoparticle fluctuates due to
inhomogeneities of various kinds. While in the bulk these fluctuations are
compensated via Thomas--Fermi screening, residual surface charges give rise to
a permanent electric dipole moment. We show that this dipole moment increases
linearly with particle size, and fluctuates strongly from particle to particle

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