scispace - formally typeset
Search or ask a question
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.


Papers
More filters
Journal ArticleDOI
TL;DR: In this article, a microscopic theory of the in-plane and "c"axis transport in cuprates is proposed, and the temperature and doping dependence of the resistivity, the Hall effect and the spin susceptibility is shown to be in a remarkable agreement with the experimental data in underdoped, optimally doped and overdoped La2-xSrxCuO4 for the entire temperature regime.
Abstract: Small-polaron and bipolaron formation destroys the Fermi-liquid behaviour of carriers strongly coupled with phonons or spin fluctuations. The non-adiabatic motion of self-trapped carriers results in the fundamental difference of low-mobility conductors compared with simple metals and Bardeen-Cooper-Schrieffer supercondutors. An appealing explanation of many properties of high-Tc cuprates and doped fullerenes emerges if one applies the polaron theory of strong-coupling superconductivity. The microscopic theory of the in-plane and ‘c’-axis transport in cuprates is proposed. The temperature and doping dependence of the in-plane and out-of-plane resistivity, the Hall effect and the spin susceptibility is shown to be in a remarkable agreement with the experimental data in underdoped, optimally doped and overdoped La2-xSrxCuO4 for the entire temperature regime. The normal state gap is explained and its doping and temperature dependence is clarified. The resonance Wigner scattering of small bipolarons i...

1 citations

Journal ArticleDOI
TL;DR: In this article, a spectroscopic analysis of conducting polymer PEDOT showed that polaron and bipolaron were the species involved in full range redox and the unusual potential hysteresis for the P 0 /P + redox pair was attributed to the chemical process initiated by an electrochemical process.
Abstract: Spectroscopic analysis of conducting polymer PEDOT showed that polaron and bipolaron were the species involved in full range redox. The unusual potential hysteresis for the P 0 /P + redox pair was attributed to the chemical process initiated by an electrochemical process.

1 citations

Journal ArticleDOI
TL;DR: In this paper , the authors investigated the dynamics of bipolarons in coupled non-degenerate organic chains including the spin-orbit coupling and interchain coupling and revealed an obvious oscillating spin Hall effect (SHE) from the bipolaron transport.
Abstract: Using an extended Su-Schrieffer-Heeger model and a nonadiabatic dynamics method, we investigate the dynamics of bipolarons in coupled nondegenerate organic chains including the spin-orbit coupling and interchain coupling. By tracing the time-dependent evolution of the charges and spins in each chain, an obvious oscillating spin Hall effect (SHE) from the bipolaron transport is revealed. The results are compared with that from polaron-dominated transport. A reduction of amplitude and an increase of oscillating frequency are observed for the SHE from the bipolaron transport. The mechanism is attributed to the enhanced skew scattering off the larger transient deformations of the chains in the case of the bipolaron. Spectrum analysis by fast Fourier transform of the SHE signal demonstrates a distinct shift of two characteristic peaks to a higher onset frequency compared to the polaron transport. The charge-spin conversion efficiency is also compared, where a larger conversion efficiency is obtained from the bipolaron transport due to the lower saturated velocity. The effects of the strength of the electric field and the interactions are discussed. This work reveals the role of the bipolaron in organic SHE and provides a feasible way to achieve larger conversion efficiency by controlling the species of carriers with the concentration of the dopant.

1 citations

Journal ArticleDOI
TL;DR: In this article, small lattice bipolarons driven by external harmonic fields are considered in the adiabatic approximation, which leads to a dramatic decrease of the apparent bipolaron mass compared to the undriven case.
Abstract: Small lattice bipolarons driven by external harmonic fields are considered in the adiabatic approximation. Resonant excitation of ions modulates the trapping potential and promotes hole transfer between neighboring atomic layers. It leads to a dramatic decrease of the apparent bipolaron mass compared to the undriven case. This effect offers an explanation for dynamic stabilization of superconductivity at high temperatures recently observed in layered cuprates.

1 citations


Network Information
Related Topics (5)
Band gap
86.8K papers, 2.2M citations
87% related
Magnetization
107.8K papers, 1.9M citations
86% related
Quantum dot
76.7K papers, 1.9M citations
85% related
Electron
111.1K papers, 2.1M citations
83% related
Amorphous solid
117K papers, 2.2M citations
83% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202316
202229
202127
202023
201920
201833