P. A. McClarty, 2 F. Krüger, 3 T. Guidi, S. F. Parker, K. Refson, 4 A. W. Parker, D. Prabhakaran, and R. Coldea ISIS, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom. Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187 Dresden, Germany. London Centre for Nanotechnology, University College London, Gordon...

We study a generalized quantum spin ladder with staggered long range interactions that decay as power-law exponent \alpha α . Using large scale Monte Carlo (QMC) and density matrix renormalization group (DMRG) simulations, we show this model undergoes transition from rung-dimer phase characteri...

We introduce an effective 2-dimer tight-binding model for the family of Shastry-Sutherland models with geometrically tunable triplon excitations. The Rashba pseudospin-orbit coupling induced by tilted external magnetic field leads to elementary excitations having nontrivial topological properties {\pi}-Berry flux. interplay between in-plane and out-of-plane thus allows us effectively engineer b...

Abstract The Shastry–Sutherland compound SrCu 2 (BO 3 ) constituting orthogonally coupled dimers harbors an S = 0 singlet ground state. confluence of strong interdimer interaction and frustration engenders a spectrum low-energy excitations including localized triplons as well triplet bound states. Their dynamics are controlled by external magnetic field temperature. Here, we employ high-field R...

The synthetic dimension, a research topic of both fundamental significance and practical applications, has been attracting increasing attention in recent years. In this paper, we propose theoretical framework to construct arbitrary dimensions, or N-boson lattices, using multiple bosons on one-dimensional lattices. We show that lattice hosting N indistinguishable can be mapped single boson an N-...

A spin-1/2 Heisenberg model on a honeycomb lattice is investigated by doing triplon analysis and quantum Monte Carlo calculations. This model, inspired ${\mathrm{Cu}}_{2}{(\mathrm{pymca})}_{3}({\mathrm{ClO}}_{4}$), has three different antiferromagnetic exchange interactions (${J}_{A}, {J}_{B}, {J}_{C}$) sets of nearest-neighbor bonds which form kagome superlattice. While the bipartite unfrustra...

We studied the magnetic excitations in quasi-one-dimensional (q-1D) ladder subsystem of Sr_(14-x) Ca_x Cu_24 O_41(SCCO) using Cu L_3-edge resonant inelastic X-ray scattering (RIXS). By comparing momentum-resolved RIXS spectra with (x=12.2) and without (x=0) high Ca content, we track evolution from collective two-triplon (2T) to weakly-dispersive gapped modes at an energy 280 meV (x=12.2). Densi...

We study the thermodynamic properties of dimerized spin-gapped quantum magnets with and without exchange anisotropy (EA) Dzyaloshinsky Moriya (DM) anisotropies within mean-field approximation (MFA). For this purpose we obtain potential $\Omega$ a triplon gas taking into account strength DM interaction up to second order. The minimization respect self-energies $\Sigma_n$ $\Sigma_{an}$ yields equ...