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首页> 外文期刊>Physical review. B, Condensed Matter And Materials Physics >Hybridized mechanism of pairing and the heavy fermion state: Exactly solvable two-band model with strong hybridized interactions
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Hybridized mechanism of pairing and the heavy fermion state: Exactly solvable two-band model with strong hybridized interactions

机译：配对和重费米子态的杂交机理：具有强杂交相互作用的可精确求解的两波段模型

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摘要

The two-band model describing strongly hybridized degenerated electron states in a chain is proposed and solved exactly by means of the Bethe ansatz. The fermions of the subbands interact with each other via one-particle and one-particle correlated on-site hybridized interactions. The chain of electrons is reduced to the model with two noninteracting subbands with a given total number of electrons, in which fermions interact via different effective constants of interactions. In the case of strong hybridized interaction the on-site repulsive interaction is compensated by hybridized interaction, which leads to an effective attractive interaction between particles and the formation of spinless bound states of Cooper type. This electron liquid component determines both heavy fermion- and superconducting-type behavior of electron properties.
机译：提出并描述了在链中强杂交简并电子状态的两波段模型，并利用Bethe ansatz精确求解。子带的费米子通过一粒子和一粒子相关的现场杂交相互作用而相互作用。电子链通过两个具有给定电子总数的非相互作用子带简化为模型，其中费米子通过不同的有效相互作用常数相互作用。在强杂交相互作用的情况下，现场排斥相互作用被杂交相互作用补偿，这导致了颗粒之间有效的吸引相互作用，并形成了库珀型无纺键合态。这种电子液体成分决定了电子性质的重费米子型和超导型行为。

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