Polaron crossover and bipolaronic metal–insulator transition in the half-filled Holstein model
نویسندگان
چکیده
منابع مشابه
Metallicity in the half-filled Holstein-Hubbard model
We re-examine the Peierls insulator to Mott insulator transition scenario in the one-dimensional Holstein-Hubbard model where, at half-filling, electron-phonon and electron-electron interactions compete for establishing chargeand spin-density-wave states, respectively. By means of large-scale density-matrix renormalization group calculations we determine the spin, single-particle and two-partic...
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We present numerical exact results for the polaronic band structure of the Holstein molecular crystal model in one and two dimensions. The use of direct Lanczos diagonalization technique, preserving the full dynamics and quantum nature of phonons, allows us to analyze in detail the renormalization of both quasiparticle bandwidth and dispersion by the electron–phonon interaction. For the two–dim...
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ژورنال
عنوان ژورنال: Physica B: Condensed Matter
سال: 2005
ISSN: 0921-4526
DOI: 10.1016/j.physb.2005.01.236