2023年11月2日 · Helium-3 superfluid is the purest known material, and as such is of intense scientific interest for the study of collective matter states such as superfluids. Understanding how its two-dimensional layer behaves could shed light on quasiparticle behavior, topological defects, and quantum energy states.

3 天之前 · Measurements of the superfluid stiffness in twisted trilayer graphene reveal unconventional nodal-gap superconductivity, where the superconducting transition is controlled by phase fluctuations ...

superfluidity, the frictionless flow and other exotic behaviour observed in liquid helium at temperatures near absolute zero (−273.15 °C, or −459.67 °F), and (less widely used) similar frictionless behaviour of electrons in a superconducting solid. In each case the unusual behaviour arises from quantum mechanical effects.

2012年7月29日 · Here we probe the superfluidity of a 2D trapped Bose gas using a moving obstacle formed by a micrometre-sized laser beam. We find a dramatic variation of the response of the fluid, depending on its...

3 天之前 · The calculation of free energy selects the most stable solution. Finally, after calculating the quasi-normal modes and their dynamic behavior, we obtained three different channels similar to the planar superfluid case, along with the ”first” hydrodynamic excitation, which maybe is associated with Berezinskii-Kosterlitz-Thoules (BKT) transition.

2024年7月16日 · We investigate the critical behavior and the dynamics of the amplitude (Higgs) mode close to the superfluid-insulator quantum phase transition in an amorphous system (i.e., a system subject to topological randomness).

4 天之前 · We find the superfluid stiffness to be much larger than expected from conventional Fermi liquid theory. ... Y. et al. Correlated insulator behavior at half-filling in magic-angle graphene ...

2025年1月31日 · The most common example of a superfluid is helium-4, which demonstrates this behavior when cooled below 2.17 Kelvin (-270.98 degrees Celsius or -455.764 degrees Fahrenheit).

2024年11月6日 · While researchers have probed various aspects of superfluid behavior, such as phase coherence and gapless Goldstone modes, direct evidence of one of superfluidity's defining features -- quantized...

2024年11月6日 · While researchers have probed various aspects of superfluid behavior, such as phase coherence and gapless Goldstone modes, direct evidence of one of superfluidity's defining features—quantized...