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19 papers · 2 filters
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…
Deep-ultraviolet electroluminescence and photocurrent generation in graphene/hBN/graphene heterostructures
Su-Beom Song, Sangho Yoon, So Young Kim +10
Hexagonal boron nitride (hBN) is a van der Waals semiconductor with a wide bandgap of ~ 5.96 eV. Despite the indirect bandgap characteristics of hBN, charge carriers excited by hig…
Magnetic anisotropy and magnetic ordering of transition-metal phosphorus trisulfides
Tae Yun Kim, Cheol-Hwan Park
Here, a magnetic model with an unprecedentedly large number of parameters was determined from first-principles calculations for transition-metal phosphorus trisulfides (TMPS's)…
Coexistence of Multifold and Multidimensional Topological Phonons in KMgBO
P. C. Sreeparvathy, Chiranjit Mondal, Chanchal K. Barman +1
Topological interpretations of phonons facilitate a new platform for novel concepts in phonon physics. Though there are ubiquitous set of reports on topological electronic excitati…
Dimer Crystallization Induced by Elemental Substitution in the Honeycomb Lattice of Ru1-xOsxCl3
Kota Kataoka, Dirk Wulferding, Takeshi Yajima +5
Substitution effects of Os for Ru in α-RuCl3 are investigated in a wide composition range of 0 =< x =< 0.67 in Ru1-xOsxCl3 by X-ray and electron diffraction, magnetic susceptibilit…
Creation and annihilation of mobile fractional solitons in atomic chains
Jae Whan Park, Eui Hwan Do, Jin Sung Shin +4
Localized modes in one dimensional topological systems, such as Majonara modes in topological superconductors, are promising platforms for robust information processing. In one dim…