244 citations · 265 across the 9 of their papers we have counts for
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Systematic study of multi-magnon binding energies in the FM-AFM - chain
Satoshi Nishimoto
We present a systematic study of multi-magnon bound states (MBSs) in the spin- FM-AFM - chain under magnetic fields using the density-matrix renormalization…
Instability of the Haldane Phase: Roles of Charge Fluctuations and Hund's Coupling
Satoshi Nishimoto
We systematically investigate the stability of the symmetry-protected topological (SPT) Haldane phase in spin-1/2 Heisenberg and half-filled Hubbard ladders coupled by ferromagneti…
Polarization-Driven Charge Frustration and Emergent Phases in the One-Dimensional Extended Hubbard Model
Sourabh Saha, Jeroen van den Brink, Manoranjan Kumar +1
Frustration is a key driver of exotic quantum phases, yet its role in charge dynamics remains largely unexplored. We show that charge frustration - induced by electronic polarizati…
Self-organised magnon condensation in quasi-1D edge-shared cuprates without external fields
Cliò Efthimia Agrapidis, Stefan-Ludwig Drechsler, Satoshi Nishimoto
Multimagnon bound states were predicted nearly a century ago and have since been a key topic in condensed matter physics due to their intriguing quantum properties. However, their…
Comparing quantum fluctuations in the spin- and spin- XXZ Heisenberg models on square and honeycomb lattices
Masahiro Kadosawa, Masaaki Nakamura, Yukinori Ohta +1
We present a detailed investigation of the XXZ Heisenberg model for spin- and spin- systems on square and honeycomb lattices. Utilizing the density-matrix renormalization g…
Emergent Quadrupolar Order in the Spin- Kitaev-Heisenberg Model
Manodip Routh, Sayan Ghosh, Jeroen van den Brink +2
Motivated by the largely unexplored domain of multi-polar ordered spin states in the Kitaev-Heisenberg (KH) systems we investigate the ground state dynamics of the spin-$\frac{1}{2…
Emergence of vortex state in the Kitaev-Heisenberg model with single-ion anisotropy
Ayushi Singhania, Jeroen van den Brink, Satoshi Nishimoto
The search for Kitaev spin liquid states has recently broadened to include a number of honeycomb materials with integer spin moments. The qualitative difference with their spin-1/2…
Kitaev interactions between j=1/2 moments in honeycomb Na2IrO3 are large and ferromagnetic: insights from ab initio quantum chemistry calculations
Vamshi M. Katukuri, S. Nishimoto, V. Yushankhai +7
NaIrO, a honeycomb 5 oxide, has been recently identified as a potential realization of the Kitaev spin lattice. The basic feature of this spin model is that for each o…
Dynamics in two-leg spin ladder with a four-spin cyclic interaction
S. Nishimoto, M. Arikawa
We study two-leg Heisenberg ladder with four-spin cyclic interaction using the (dynamical) density-matrix renormalization group method. We demonstrate the dependence of the low-lyi…