Tag: Condensed Matter Physics
Spectral localizer matches local Chern and winding markers
What the study found The study explicitly demonstrates that the spectral localizer is equivalent to local Chern and winding markers. The authors show that Chern and winding markers appear as leading-order terms in a perturbative expansion in the spectral localizer parameter κ. Why the authors say this matters The authors say this matters because the…
Thermostat choices affect sampling in molecular dynamics simulations
What the study found Thermostat algorithms in constant-temperature molecular dynamics simulations do not all behave the same way. In this binary Lennard-Jones liquid glass-former model, the Nosé-Hoover chain and Bussi velocity-rescaling thermostats controlled temperature reliably, while the Grønbech-Jensen-Farago Langevin scheme gave the most consistent sampling of both temperature and potential energy. Why the authors say…
Domain roughness grows across Mn3NiN phase transition
What the study found Mn3NiN changes from a ferrimagnetic state to a non-collinear antiferromagnetic state with a disordered, dendritic magnetic domain structure. The domain roughness increases on cooling and reaches a fractal dimension of about 1.55 in the non-collinear phase. Why the authors say this matters The authors say that controlling magnetic domain states is…
Review compares muscle-stimulation methods for biohybrid robots
What the study found This review says prior studies on muscle-driven biohybrid robots for walking and crawling can be organized by three muscle-stimulation techniques: electrical field, optical, and neuromuscular junction-based stimulation. It also describes different walker and crawler models, their design principles, and their operating mechanisms. Why the authors say this matters The authors say…
