### Abstract

Effect of dilute impurities on Frohlich's collective mode is investigated by solving the Dyson equation for the collective mode Green's function which includes self-consistently an infinite series of impurity scattering processes occuring through electronic bubbles. The Dyson equation is shown to reduce to a simple algebraic equation in the low frequency region of interest. The electrical conductivity σ(ω) is examined and related to the collective mode Green's function. An analytic solution to the reduced Dyson equation is obtained. The resulting expression for conductivity is very simple: σ(ω)∝ω^{-3} √ ω^{2}-(1/2) ω^{2}
_{t}where ω_{T} is a constant. The analytic expression for σ(ω) describes the pinning effect fairly well: it gives a sharp asymmetric peak at (√3/2)ω_{T} with width ∼ω_{T}, and it satisfies exactly the conductivity sum rule for the collective mode.

Original language | English |
---|---|

Pages (from-to) | 1488-1498 |

Number of pages | 11 |

Journal | Journal of the Physical Society of Japan |

Volume | 41 |

Issue number | 5 |

Publication status | Published - 1976 Nov |

Externally published | Yes |

### Fingerprint

### ASJC Scopus subject areas

- Physics and Astronomy(all)

### Cite this

*Journal of the Physical Society of Japan*,

*41*(5), 1488-1498.

**A microscopic theory of the pinning effect in Peierls systems with dilute impurities.** / Kurihara, Susumu.

Research output: Contribution to journal › Article

*Journal of the Physical Society of Japan*, vol. 41, no. 5, pp. 1488-1498.

}

TY - JOUR

T1 - A microscopic theory of the pinning effect in Peierls systems with dilute impurities

AU - Kurihara, Susumu

PY - 1976/11

Y1 - 1976/11

N2 - Effect of dilute impurities on Frohlich's collective mode is investigated by solving the Dyson equation for the collective mode Green's function which includes self-consistently an infinite series of impurity scattering processes occuring through electronic bubbles. The Dyson equation is shown to reduce to a simple algebraic equation in the low frequency region of interest. The electrical conductivity σ(ω) is examined and related to the collective mode Green's function. An analytic solution to the reduced Dyson equation is obtained. The resulting expression for conductivity is very simple: σ(ω)∝ω-3 √ ω2-(1/2) ω2 twhere ωT is a constant. The analytic expression for σ(ω) describes the pinning effect fairly well: it gives a sharp asymmetric peak at (√3/2)ωT with width ∼ωT, and it satisfies exactly the conductivity sum rule for the collective mode.

AB - Effect of dilute impurities on Frohlich's collective mode is investigated by solving the Dyson equation for the collective mode Green's function which includes self-consistently an infinite series of impurity scattering processes occuring through electronic bubbles. The Dyson equation is shown to reduce to a simple algebraic equation in the low frequency region of interest. The electrical conductivity σ(ω) is examined and related to the collective mode Green's function. An analytic solution to the reduced Dyson equation is obtained. The resulting expression for conductivity is very simple: σ(ω)∝ω-3 √ ω2-(1/2) ω2 twhere ωT is a constant. The analytic expression for σ(ω) describes the pinning effect fairly well: it gives a sharp asymmetric peak at (√3/2)ωT with width ∼ωT, and it satisfies exactly the conductivity sum rule for the collective mode.

UR - http://www.scopus.com/inward/record.url?scp=0001257771&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001257771&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0001257771

VL - 41

SP - 1488

EP - 1498

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 5

ER -