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Quantum Critical Point

All articles tagged with #quantum critical point

science-and-technology1 year ago•8 min saved

"Unveiling the Hidden Nature of Superconductors through Quantum Breakthrough"

Researchers at Tokyo Tech have identified the quantum critical point in superconductors, solving a three-decade-old mystery and enhancing the understanding of superconductivity fluctuations. By measuring the thermoelectric effect in superconductors over a wide range of magnetic fields and temperatures, they revealed the full picture of fluctuations in superconductivity and demonstrated that the anomalous metallic state in two-dimensional superconductors is due to the existence of a quantum critical point. This breakthrough sheds light on the properties of superconductors at cryogenic temperatures and has implications for the development of materials with large thermoelectric effects at low temperatures.

via SciTechDaily|

#quantum-critical-point #quantum-fluctuations #science-and-technology

sciencephysics1 year ago•1 min saved

"Unraveling the Enigma of the Strange Metal Phase and Its Impact on Superconductivity"

Recent research has challenged the Fermi liquid theory in the study of superconductivity, particularly in the observation of a non-Fermi liquid state known as the "strange metal phase." Studies have shown that this phase exhibits continuous current rather than discrete quasiparticles, prompting further exploration into its nature and implications. Researchers have investigated charge density fluctuations as a potential signature of the quantum critical point, suggesting a link between the two phenomena. These findings may have significant implications for the development of high-temperature superconductors, although further research and discussion are needed before any definitive conclusions can be drawn.

via Hackaday|

#electrical-current #fermi-liquid-theory #quantum-critical-point

science-and-technology2 years ago•3 min saved

Unraveling the Enigma: Unveiling the Puzzling Behavior of Cuprates and its Superconductor Implications

Researchers have discovered a quantum critical point connected to the "strange metal" phase of high-critical-temperature copper-based superconductors. The study, based on X-ray scattering experiments, reveals the existence of charge density fluctuations that make cuprates behave like "strange" metals. This discovery could lead to the development of better materials with higher critical temperatures, advancing superconductivity research and contributing to sustainable technologies.

via Phys.org|

#charge-density-fluctuations #cuprates #quantum-critical-point