We begin our study with the ground-state energy density and the energy gap. The ground-state energy density of the system is expressed as:
$$\begin{aligned} E_{G} = \frac{1}{4} \varepsilon _{0,k}, \end{aligned}$$
(6)
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Agarwal, G. S. & Kapale, K. T. Subwavelength atom localization via coherent population trapping Journal of Physics B: Atomic. Molecular and Optical Physics 39, 3437 (2006).
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The polaromechanical system is schematically shown in Fig. 1a, which consists of a 3D microwave cavity and a YIG sphere supporting both a magnon mode and a deformation vibration mode. The magnon mode couples to the…
High-quality CoTiO3 single crystals were prepared using the floating zone method. Starting ceramic rods of CoTiO3 were prepared by solid state reaction of thoroughly mixed stoichiometric of CoO (99.99%, Alfa…
To explore the enhanced effect of long-wavelength phonon modes in active crystals and glasses, we first computed the mean squared displacement (MSD), 〈Δr2(t)〉 (see Methods for the definition), as a function of time. For the 2dmKA model…
RAS is a non-destructive optical probe in which linearly polarised light is at normal incidence to a sample’s surface. The difference in reflectance (\(\Delta r\)) along two orthogonal axes of a surface plane (x, y)32 is measured. The RAS unit…
We construct twisted bilayer Néel antiferromagnets by rotating two magnetic layers in a honeycomb lattice with a relative twist angle (Fig. 2a). These twisted magnets can be described using a Heisenberg spin model given by
We begin by making some general observations about our triatomic systems. Heavy-element-containing molecular systems are difficult to model as relativistic electronic-structure methods are required….
Our approach employs a heterostructure composed of an FM metal and an antiferromagnetic insulator (AFI). Unlike conventional methods relying on external spin injection from heavy…
Culcer, D., Saraiva, A. L., Koiller, B., Hu, X. & Das Sarma, S. Valley-based noise-resistant quantum computation using Si quantum dots. Phys. Rev. Lett. 108, 126804 (2012).
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Yao,…