Articles tagged with Fermi Gas
A research team has observed and quantitatively characterized the many-body pairing pseudogap in unitary Fermi gases, resolving longstanding debates. This achievement supports pairing as a possible origin of the pseudogap in high-temperature superconductors, advancing our understanding of strongly correlated systems.
Researchers have made a quantum matter breakthrough by tuning density waves in a unitary Fermi gas, creating a new type of matter with extreme interactions. This discovery could lead to a better understanding of complex materials and potentially improve the development of quantum-based technologies.
Researchers at JILA have developed a technique to extend the excited-state lifetime of atoms in a Fermi sea, allowing for improved quantum communication networks and atomic clocks. By manipulating the Pauli exclusion principle, they achieved a significant delay in spontaneous decay.
A new Australian study examines systems transitioning from a normal fluid to a quantum state known as a superfluid, which can flow with zero friction. The research provides new insights into the formation of these remarkable states, revealing different timescales and correlations involved.
Researchers developed a novel thermometer based on quantum entanglement that can accurately measure ultra-cold temperatures in clouds of atoms, known as Fermi gases. The new method uses a probe atom to infer temperature by exploiting the unique properties of fermions at extremely low temperatures.
A new Australian study uses sound waves to probe the unique properties of an ultracold quantum gas, a model system for certain superconductors and nuclear matter. The research reveals strong variations in sound wave behavior as a function of temperature.
Researchers propose a scheme to enhance the transition temperature of atomic Fermi gases by tuning the pairing interaction strength and lattice spacing, leading to high Tc/TF ratios. This concept has the potential to simulate high Tc superconductivity and aid in the design of new superconductors.
A recent study resolves a long-standing debate about what happens at the microscopic level when matter transitions into a superconducting or superfluid state. Correlations between pairs of atoms in an ultra-cold gas were found to grow suddenly as the system was cooled below the superfluid transition temperature.
Theoretical studies have predicted the existence of exotic few-body correlations and interesting pairing states in spin-orbit coupled ultracold Fermi gases. Spin-orbit coupling modifies single-particle spectra, giving rise to these phenomena.
A team of scientists at Duke University has measured the viscosity of an ultra-cold gas, confirming its potential as a scale model for exotic matter and high-temperature superconductors. The results also provide insight into predictions made using string theory.
JILA team finds similar behavior in ultracold atomic gases and high-temperature superconductors, supporting the idea that studying superfluidity in atomic gases can help understand complicated superconductors. The discovery lends support to the concept of a 'pseudo-gap region' where atom pairing occurs above critical temperature.