TY - JOUR
T1 - Breaking of the overall permutation symmetry in nonlinear optical susceptibilities of one-dimensional periodic dimerized Hückel model
AU - Xu, Minzhong
AU - Jiang, Shidong
PY - 2006/10/4
Y1 - 2006/10/4
N2 - Based on one-dimensional single-electron infinite periodic models of trans-polyacetylene, we show analytically that the overall permutation symmetry of nonlinear optical susceptibilities is, although preserved in bound-state molecular systems, no longer generally held in periodic systems. The overall permutation symmetry breakdown provides a natural explanation of the widely observed large deviations of Kleinman symmetry in off-resonant regions of periodic systems. Finally, physical conditions to experimentally test the overall permutation symmetry breakdown are discussed.
AB - Based on one-dimensional single-electron infinite periodic models of trans-polyacetylene, we show analytically that the overall permutation symmetry of nonlinear optical susceptibilities is, although preserved in bound-state molecular systems, no longer generally held in periodic systems. The overall permutation symmetry breakdown provides a natural explanation of the widely observed large deviations of Kleinman symmetry in off-resonant regions of periodic systems. Finally, physical conditions to experimentally test the overall permutation symmetry breakdown are discussed.
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U2 - 10.1088/0953-8984/18/39/027
DO - 10.1088/0953-8984/18/39/027
M3 - Article
AN - SCOPUS:33748853748
SN - 0953-8984
VL - 18
SP - 8987
EP - 8993
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 39
M1 - 027
ER -