75 citations · 183 across the 16 of their papers we have counts for
17 papers
Connectivity Controls Variational Accessibility in Symmetry-Preserving Quantum Circuits
Sahinur Reja
Designing expressive quantum circuits for the variational quantum eigensolver (VQE) is a central challenge in simulating interacting many-body systems. Even symmetry-preserving (SP…
Competing magnetic and topological orders in the spin-1 Kitaev-Heisenberg chain with single-ion anisotropy
Sahinur Reja, Satoshi Nishimoto
We investigate the ground-state phase diagram of the spin-1 Kitaev--Heisenberg chain in the presence of uniaxial single-ion anisotropy (SIA) by density-matrix renormalization…
Exotic coupled spin-charge states in decorated honeycomb magnets: A hybrid-Monte Carlo study
Satyabrata Jana, Sahinur Reja
We uncover four exotic coupled spin-charge ground states in the strong coupling limit of the Kondo lattice model at various electronic fillings on a frustrated decorated honeycomb…
Topological Phases in Half-Integer Higher Spin - Heisenberg Chains
Sahinur Reja, Satoshi Nishimoto
We study the ground state properties of antiferromagnetic - chains with half-integer spins ranging from to using the density-matrix renor…
Skyrmion crystal phases in antiferromagnetic itinerant triangular magnets
Sahinur Reja
Very often the skyrmions form a triangular crystal in chiral magnets. Here we study the effect of itinerant electrons on the structure of skyrmion crystal (SkX) on triangular latti…
Critical spin- tetramer compound CuInVO: Exploring the vicinity of two multimerized singlet states
Sahinur Reja, Satoshi Nishimoto
Using the density-matrix renormalization group technique, we study a one-dimensional spin- Heisenberg chain consisting of coupled tetramers as an effective spin model…
Spin Stiffness and Domain Walls in Dirac-Electron Mediated Magnets
Sahinur Reja, H. A. Fertig, L. Brey
Spin interactions of magnetic impurities mediated by conduction electrons is one of the most interesting and potentially useful routes to ferromagnetism in condensed matter. In rec…
Phase diagram of Hubbard-Holstein model on 4-leg tube system at quarter-filling
Sahinur Reja, Satoshi Nishimoto
We derive an effective electronic Hamiltonian for square lattice Hubbard-Holstein model (HHM) in the strong electron-electron (e-e) and electron-phonon (e-ph) coupling regime and u…
Triplet superconductivity in coupled odd-gon rings
Sahinur Reja, Satoshi Nishimoto
Shedding light on the nature of spin-triplet superconductivity has been a long-standing quest of solid-state physics since the discovery of superfluidity in liquid He. Neverthe…
From Frustrated to Unfrustrated: Coupling two triangular-lattice itinerant Quantum Magnets
Sahinur Reja, Pavel S. Anisimov, Maria Daghofer
Motivated by systems that can be seen as composed of two frustrated sublattices combined into a less frustrated total lattice, we study the double-exchange model with nearest-neigh…
Surface Magnetism in Topological Crystalline Insulators
Sahinur Reja, H. A. Fertig, L. Brey +1
We study topological crystalline insulators doped with magnetic impurities, in which ferromagnetism at the surface lowers the electronic energy by spontaneous breaking of a crystal…
Strongly enhanced superconductivity in coupled t-J segments
Sahinur Reja, Jeroen van den Brink, Satoshi Nishimoto
The Hamiltonian is one of the cornerstones in the theoretical study of strongly correlated copper-oxide based materials. Using the density matrix renormalization grou…
Electronic route to stabilize nanoscale spin textures in itinerant frustrated magnets
Sahinur Reja, Jeroen van den Brink, Sanjeev Kumar
We unveil novel spin textures in an itinerant fermion model on a frustrated triangular lattice in the limit of low electronic density. Using hybrid Monte Carlo simulations on finit…
Coupled spin-charge order in frustrated itinerant triangular magnets
Sahinur Reja, Rajyavardhan Ray, Jeroen van den Brink +1
We uncover four new spin-charge ordered ground states in the strong coupling limit of the Kondo lattice model on triangular geometry. Two of the states at one-third electronic fill…
Polariton condensation with saturable molecules dressed by vibrational modes
Justyna A. Cwik, Sahinur Reja, Peter B. Littlewood +1
Polaritons, mixed light-matter quasiparticles, undergo a transition to a condensed, macroscopically coherent state at low temperatures or high densities. Recent experiments show th…
Correlated singlet phase in the one-dimensional Hubbard-Holstein model
Sahinur Reja, Sudhakar Yarlagadda, Peter B. Littlewood
We show that a nearest-neighbor singlet phase results (from an effective Hamiltonian) for the one-dimensional Hubbard-Holstein model in the regime of strong electron-electron and e…
Phase diagram of one-dimensional Hubbard-Holstein model at quarter-filling
Sahinur Reja, Sudhakar Yarlagadda, Peter B. Littlewood
We derive an effective Hamiltonian for the one-dimensional Hubbard-Holstein model, valid in a regime of both strong electron-electron (e-e) and electron-phonon (e-ph) interactions…