Theory for supersolid 4He
Xi Dai, Michael Ma, Fu-Chun Zhang
Abstract
Although both vacancies and interstitial have relatively high activation energies in the normal solid, we propose that a lower energy bound state of a vacancy and an interstitial may facilitate vacancy condensation to give supersolidity in 4He . We use a phenomenological two-band boson lattice model to demonstrate this new mechanism and discuss the possible relevance to the recently observed superfluid-like, non-classical rotational inertial experiments of Kim and Chan in solid 4He. Some of our results may also be applicable to trapped bosons in optical lattices.
Create a lesson
Related papers
Constraining the Superconducting Gap of Monolayer FeSe/SrTiO3 via Statistical Analysis and Tip-Height-Dependent Tunneling Spectroscopy
Dongwon Shin, Xiyou Peng, Kaleb McClure et al.
Acoustic damping limits superfluid helium as a thermal bath for mechanical resonators
Yunhu Huang, Mehri Ebrahimi, Alireza Rashedi et al.
Superinsulation, electric confinement in condensed matter
M. Cristina Diamantini, Carlo A. Trugenberger
Observation of Superconductivity in a Cu-Rich High-Entropy Alloy
Arumugam Sonachalam
Imaging the Current Distribution in Superconducting Transition-Edge Sensors with Scanning SQUID Microscopy
Samantha Walker, Austin Kaczmarek, Douglas A. Bennett et al.
Asymmetric Little--Parks Oscillations as a Probe of Coupled Pairing Channels in Surface-Superconducting PtBi2PtBi2
Yuriy Yerin, Stefan-Ludwig Drechsler, Carsten Timm et al.