Mobile bipolaron - Strong coupling approach

J. Bonča; Stuart Alan Trugman

Mobile bipolaron - Strong coupling approach

J. Bonča
, Stuart Alan Trugman

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We explore the properties of the bipolaron in a 1D Holstein-Hubbard model with dynamical quantum phonons. We apply strong coupling theory to investigate the intersite bipolaron. We investigate the influence of the Hubbard interaction on the bipolaron binding energy, effective mass, and phase diagram. We compare our analytic results to recent numerical calculations [1]. In the intermediate and strong coupling regimes, a bipolaron is stable beyond the naive stability limit U₀ = 2ωg². The intersite bipolaron has a significantly reduced mass compared to the single site bipolaron, and is stable in the strong coupling regime up to U_c ∼ 4ωg².

Original language	English
Pages (from-to)	999-1003
Number of pages	5
Journal	Journal of Superconductivity and Novel Magnetism
Volume	13
Issue number	6
State	Published - Dec 1 2000

Cite this

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title = "Mobile bipolaron - Strong coupling approach",

abstract = "We explore the properties of the bipolaron in a 1D Holstein-Hubbard model with dynamical quantum phonons. We apply strong coupling theory to investigate the intersite bipolaron. We investigate the influence of the Hubbard interaction on the bipolaron binding energy, effective mass, and phase diagram. We compare our analytic results to recent numerical calculations [1]. In the intermediate and strong coupling regimes, a bipolaron is stable beyond the naive stability limit U0 = 2ωg2. The intersite bipolaron has a significantly reduced mass compared to the single site bipolaron, and is stable in the strong coupling regime up to Uc ∼ 4ωg2.",

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T1 - Mobile bipolaron - Strong coupling approach

AU - Bonča, J.

AU - Trugman, Stuart Alan

PY - 2000/12/1

Y1 - 2000/12/1

N2 - We explore the properties of the bipolaron in a 1D Holstein-Hubbard model with dynamical quantum phonons. We apply strong coupling theory to investigate the intersite bipolaron. We investigate the influence of the Hubbard interaction on the bipolaron binding energy, effective mass, and phase diagram. We compare our analytic results to recent numerical calculations [1]. In the intermediate and strong coupling regimes, a bipolaron is stable beyond the naive stability limit U0 = 2ωg2. The intersite bipolaron has a significantly reduced mass compared to the single site bipolaron, and is stable in the strong coupling regime up to Uc ∼ 4ωg2.

AB - We explore the properties of the bipolaron in a 1D Holstein-Hubbard model with dynamical quantum phonons. We apply strong coupling theory to investigate the intersite bipolaron. We investigate the influence of the Hubbard interaction on the bipolaron binding energy, effective mass, and phase diagram. We compare our analytic results to recent numerical calculations [1]. In the intermediate and strong coupling regimes, a bipolaron is stable beyond the naive stability limit U0 = 2ωg2. The intersite bipolaron has a significantly reduced mass compared to the single site bipolaron, and is stable in the strong coupling regime up to Uc ∼ 4ωg2.

UR - https://www.scopus.com/pages/publications/0034499223

M3 - Article

SN - 1557-1939

VL - 13

SP - 999

EP - 1003

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 6

ER -

Mobile bipolaron - Strong coupling approach

Abstract

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