We study the RKKY Heisenberg model on a three-dimensional stacked-triangular lattice under magnetic fields by extensive Monte Carlo simulations to get insight into chiral-degenerate symmetric skyrmion crystal (SkX) in centrosymmetric metallic magnets. The triple-$q$ SkX state and double-$q$ states are realized, together with single-$q$ state. find an unexpected phenomenon of replica-symmetry br...

Polymorphism in the orcinol:4,40-bipyridine cocrystal system is analyzed in terms of a robust convergent modular phenol pyridine supramolecular synthon. Employing the Synthon Based Fragments Approach (SBFA) to transfer the multipole charge density parameters, it is demonstrated that the crystal landscape can be quantified in terms of intermolecular interaction energies in the five crystal forms...

Polymorphism in the orcinol:4,4'-bipyridine cocrystal system is analyzed in terms of a robust convergent modular phenol⋯pyridine supramolecular synthon. Employing the Synthon Based Fragments Approach (SBFA) to transfer the multipole charge density parameters, it is demonstrated that the crystal landscape can be quantified in terms of intermolecular interaction energies in the five crystal forms...

Modified quantum algebra Ũq(g) is an algebra which is ’modified’ the Cartan part of the underlying quantum algebra Uq(g) as in (3.1) and (3.2). Modified quantum algebra Ũq(g) holds the remarkable property that modified quantum algebra Ũq(g) affords the commutative two crystal structures. The first one is the usual crystal structure, which was found by Lusztig ([8]). Another crystal structure wa...