Topic
Bipolaron
About: Bipolaron is a research topic. Over the lifetime, 1335 publications have been published within this topic receiving 29154 citations. The topic is also known as: bipolarons.
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TL;DR: In this paper, a singleparticle spectral density was proposed for cuprates taking into account the bipolaron formation, realistic band structure, thermal fluctuations and disorder Tunnelling and photoemission (PES) spectra.
Abstract: A single-particle spectral density is proposed for cuprates taking into account the bipolaron formation, realistic band structure, thermal fluctuations and disorder Tunnelling and photoemission (PES) spectra are described, including the temperature independent gap observed both in the superconducting and normal states, the emission/injection asymmetry, the finite zero-bias conductance, the spectral shape in the gap region and its temperature and doping dependence, dip-hump incoherent asymmetric features at high voltage (tunnelling) and large binding energy (PES)
TL;DR: In this article, the influence of tunneling of the electrons into the adjacent wells, electron-electron correlation, band non-parabolicity, and electron-phonon interaction on a GaAs/AlGaAs superlattice was analyzed.
07 Nov 2018
01 Oct 1992
TL;DR: CW photomodulation technique has been applied to study the photoexcitations of both a form of soluble polyacetylene with controlled conjugation length and an unsymmetrical polydiace-tylene and its oligomers.
Abstract: Purpose of this research has been to investigate the dependence of the non linear excitations in conjugated polymers on their conjugation length. To this end CW photomodulation technique has been applied to study the photoexcitations of both a form of soluble polyacetylene with controlled conjugation length and an unsymmetrical polydiace-tylene and its oligomers.
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TL;DR: A correlation between the theories of superconductivity based on the concept of charge density waves (CDW) and the translation invariant (TI) bipolaron theory is established in this paper, where it is shown that CDW are originated from TI-bipolaron states in the pseudogap phase due to Kohn anomaly and form a pair density wave (PDW) for wave vectors corresponding to nesting.
Abstract: A correlation is established between the theories of superconductivity based on the concept of charge density waves (CDW) and the translation invariant (TI) bipolaron theory. It is shown that CDW are originated from TI-bipolaron states in the pseudogap phase due to Kohn anomaly and form a pair density wave (PDW) for wave vectors corresponding to nesting. Emerging in the pseudogap phase, CDW coexist with superconductivity at temperatures below that of superconducting transition while their wave amplitudes decrease as a Bose condensate is formed from TI-bipolarons, vanishing at zero temperature.