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256 papers · 1 filter
Harnessing the Quantum Behavior of Spins on Surfaces
Yi Chen, Yujeong Bae, Andreas J. Heinrich
The desire to control and measure individual quantum systems such as atoms and ions in a vacuum has led to significant scientific and engineering developments in the past decades t…
Wannier Function Perturbation Theory: Localized Representation and Interpolation of Wavefunction Perturbation
Jae-Mo Lihm, Cheol-Hwan Park
Thanks to the nearsightedness principle, the low-energy electronic structure of solids can be represented by localized states such as the Wannier functions. Wannier functions are a…
Unified trade-off optimization of quantum harmonic Otto engine and refrigerator
Varinder Singh, Satnam Singh, Obinna Abah +1
We investigate quantum Otto engine and refrigeration cycles of a time-dependent harmonic oscillator operating under the conditions of maximum -function, a trade-off objective fu…
Conformal geometry on a class of embedded hypersurfaces in spacetimes
Abbas M. Sherif, Peter K. S. Dunsby
In this work, we study various properties of embedded hypersurfaces in decomposed spacetimes with a preferred spatial direction, denoted , which are orthogonal to the…
Double layered transformation cavities: Crossover between local and global transformations
Jung-Wan Ryu
We study the resonant modes in double-layered transformation cavities consisting of inner and outer layer boundaries where the mode intensity is mainly located inside the inner lay…
Observation of spin-dependent dual ferromagnetism in perovskite ruthenates
Sungsoo Hahn, Byungmin Sohn, Minjae Kim +10
We performed in-situ angle-resolved photoemission spectroscopy (ARPES) and spin-resolved ARPES (SARPES) experiments to investigate the relationship between electronic band structur…