Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 91, Issue 11, Pages -Publisher
PHYSICAL SOC JAPAN
DOI: 10.7566/JPSJ.91.113703
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Investigating the behavior of the dielectric function in the vacuum region near the metal surface is crucial in studying the local electric field enhancement. We conducted calculations on the position dependent dielectric function near the Cu(100) surface and found a long-lived tail of the dielectric function outside the surface, providing clear evidence of field enhancement. The calculated dielectric function depends on the directions of the oscillating electric field and the system.
In the study of the local electric field enhancement near the metal surface, it would be important to investigate the behavior of the dielectric function in the vacuum region near the metal surface. We calculate the position dependent dielectric function near the Cu(100) surface and demonstrate that there is a long-lived tail of the dielectric function out of the surface, which provides clear evidence of the field enhancement. The calculated dielectric function depends on the directions of the oscillating electric field and the system.
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