135 citations · 604 across the 28 of their papers we have counts for
18 papers · 1 filter
Crossover and Changeover in Spin-1 Kitaev- Chain with Uniaxial Single-ion Anisotropy
Qiang Luo, Shijie Hu, Wang Yang +4
Recent advances in bond-directional spin chains have revealed extensive emergent phenomena and unconventional criticality. Here we investigate the spin-1 Kitaev- chain with unia…
Gapless and ordered phases in spin-1/2 Kitaev-XX-Gamma chain
Zebin Zhuang, Wang Yang
In this work, we study the spin-1/2 Kitaev chain with additional XX and symmetric off-diagonal Gamma interactions. By a combination of Jordan-Wigner transformation and density matr…
Nonsymmorphic spin-space cubic groups and SU(2) conformal invariance in one-dimensional spin-1/2 models
Wang Yang, Alberto Nocera, Chao Xu +1
Recently, extended gapless phases with emergent SU(2) conformal invariance occupying finite regions in the phase diagrams have been found in one-dimensional spin-1/2 models wit…
Counter-rotating spiral, zigzag, and 120 orders from coupled-chain analysis of Kitaev-Gamma-Heisenberg model, and relations to honeycomb iridates
Wang Yang, Alberto Nocera, Chao Xu +2
We study the nearest neighboring spin-1/2 Kitaev-Heisenberg-Gamma () model on the honeycomb lattice in the parameter region of ferromagnetic (FM) Kitaev and antiferromagnetic…
Emergent SU(2) conformal symmetry in the spin-1/2 Kitaev-Gamma chain with a Dzyaloshinskii-Moriya interaction
Wang Yang, Alberto Nocera, Chao Xu +3
We study the one-dimensional spin-1/2 Kitaev-Gamma model with a bond-dependent Dzyaloshinskii-Moriya (DM) interaction, which can be induced by an electric field applied in the thir…
Origin of nonsymmorphic bosonization formulas in generalized antiferromagnetic Kitaev spin- chains from a renormalization-group perspective
Wang Yang, Chao Xu, Alberto Nocera +1
Recently, in the Luttinger liquid phase of the one-dimensional generalized antiferromagnetic Kitaev spin-1/2 model, it has been found that the abelian bosonization formulas of the…
Nonsymmorphic bosonization in one-dimensional generalized Kitaev spin-1/2 models
Wang Yang, Chao Xu, Shenglong Xu +2
In this work, we perform a detailed study on the consequences of nonsymmorphic symmetries in the Luttinger phase of the one-dimensional spin-1/2 Kitaev-Heisenberg-Gamma model with…
Symmetry analysis of bond-alternating Kitaev spin chains and ladders
Wang Yang, Alberto Nocera, Paul Herringer +2
In this work, we analyze the nonsymmorphic symmetry group structures for a variety of generalized Kitaev spin chains and ladders with bond alternations, including Kitaev-Gamma chai…
Spin wave theory of one-dimensional generalized Kitaev model
Wang Yang, Alberto Nocera, Ian Affleck
In this work, we perform a combination of classical and spin wave analysis on the one-dimensional spin- Kitaev-Heisenberg-Gamma model in the region of an antiferromagnetic Kitae…
Comprehensive study of the phase diagram of the spin-1/2 Kitaev-Heisenberg-Gamma chain
Wang Yang, Alberto Nocera, Ian Affleck
A central question on Kitaev materials is the effects of additional couplings on the Kitaev model which is proposed to be a candidate for realizing topological quantum computations…
Classical spin order near antiferromagnetic Kitaev point in the spin-1/2 Kitaev-Gamma chain
Wang Yang, Alberto Nocera, Erik S. Sørensen +2
A minimal Kitaev-Gamma model has been recently investigated to understand various Kitaev systems. In the one-dimensional Kitaev-Gamma chain, an emergent SU(2) phase and a rank-…
Phase diagram of the spin-1/2 Kitaev-Gamma chain and emergent SU(2) symmetry
Wang Yang, Alberto Nocera, Tarun Tummuru +2
We study the phase diagram of a one-dimensional version of the Kitaev spin-1/2 model with an extra ``-term", using analytical, density matrix renormalization group and exact dia…
Dispersions of Many-Body Bethe strings
Anup Kumar Bera, Jianda Wu, Wang Yang +9
Complex bound states of magnetic excitations, known as Bethe string, were predicted almost a century ago to exist in one-dimensional quantum magnets 1. The dispersions of the strin…
Quantum Critical Dynamics of a Heisenberg-Ising Chain in a Longitudinal Field: Many-Body Strings versus Fractional Excitations
Zhe Wang, M. Schmidt, A. Loidl +11
We report a high-resolution terahertz spectroscopic study of quantum spin dynamics in the antiferromagnetic Heisenberg-Ising spin-chain compound BaCoVO as a function of…
Experimental Observation of Bethe Strings
Zhe Wang, Jianda Wu, Wang Yang +8
Almost one century ago, string states - complex bound states (Wellenkomplexe) of magnetic excitations - have been predicted to exist in one-dimensional quantum magnets and since th…
One-dimensional Quantum Spin Dynamics of Bethe String States
Wang Yang, Jianda Wu, Shenglong Xu +2
Quantum dynamics of strongly correlated systems is a challenging problem. Although the low energy fractional excitations of one dimensional integrable models are often well-underst…
Quantum critical dynamics for a prototype class of insulating antiferromagnets
Jianda Wu, Wang Yang, Congjun Wu +1
Quantum criticality is a fundamental organizing principle for studying strongly correlated systems. Nevertheless, understanding quantum critical dynamics at nonzero temperatures is…
From confined spinons to emergent fermions: Observation of elementary magnetic excitations in a transverse-field Ising chain
Zhe Wang, Jianda Wu, Shenglong Xu +11
We report on spectroscopy study of elementary magnetic excitations in an Ising-like antiferromagnetic chain compound SrCoVO as a function of temperature and applied tra…