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rogerl
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What is the present consensus about it? What do you think is the most plausible mechanism? What do you think is the highest temperature that can be attained, perhaps room temperature?
rogerl said:What is the present consensus about it? What do you think is the most plausible mechanism? What do you think is the highest temperature that can be attained, perhaps room temperature?
petergreat said:As an outsider, I'd like to ask a question about the status of research on high-Tc superconductors. Is there a lack of convincing theories, or is there an abundance of promising theories but no good experimental probe to pick out the correct one?
petergreat said:Lately there have been lots of talk about string theory shedding light on high-Tc through gauge/gravity duality, i.e. AdS/CFT.
vatlychatran said:Here is from a book I read
"...the characteristics of high- superconductors
deviate from the predictions of the BCS theory as those of organic supercon-
ductors and heavy fermions. For example, the BCS isotope effect is almost ab-
sent in cuprates. As a consequence, this has prompted the exploration of non-
phonon electronic coupling mechanisms. Ph. Anderson was probably the first
to suggest a theoretical model which did not incorporate phonon-electron inter-
actions. Between 1987 and 2002, more than 100 theoretical models of high-
superconductivity were proposed. Most of these models consider phonons ir-
relevant. Looking ahead, it is worth noting that, as established by now, none of
them can be fully applied to high- superconductors; however, the combina-
tion of two proposed models, namely, the bisoliton theory and the theory based
on spin-fluctuations, can in the first approximation describe the phenomenon
of high- superconductivity"
ZapperZ said:A book is not a very good source to quote for the progress in the field of High-Tc superconductors. This is because things change very dramatically. As an example, the apical oxygen half-breathing phonon mode is now considered to be a serious candidate as the source of pairing mechanism.
Zz.
High temperature superconductivity refers to the phenomenon where certain materials are able to conduct electricity with zero resistance at temperatures higher than traditional superconductors, which require extremely low temperatures near absolute zero.
The exact mechanism of high temperature superconductivity is still not fully understood. However, it is believed that it involves the formation of electron pairs, called Cooper pairs, which are able to move through the material without resistance.
High temperature superconductors have the potential to revolutionize various industries, such as energy, transportation, and medicine. They could be used to create more efficient power transmission lines, faster and more powerful electronic devices, and even levitating trains.
One of the main challenges in achieving high temperature superconductivity is finding materials that can exhibit this phenomenon at even higher temperatures. Another challenge is creating these materials in a way that is cost-effective and scalable for practical applications.
While high temperature superconductors have not yet been fully integrated into everyday life, there have been some advancements in using them in smaller scale applications. For example, they have been used in MRI machines and in some electronic devices. However, more research and development is needed before they can be widely used in everyday life.