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Field and Polarization Dependent Quantum Spin Dynamics in Honeycomb Magnet NaCoTeO: Magnetic Excitations and Continuum
Patrick Pilch, Laur Peedu, Anup Kumar Bera +4
We report terahertz spectroscopic measurements of quantum spin dynamics in the spin-1/2 honeycomb magnet NaCoTeO as a function of applied magnetic field with different…
Repulsively bound magnon excitations of a spin-1/2 XXZ chain in a staggered transverse field
Catalin-Mihai Halati, Zhe Wang, Thomas Lorenz +2
We study the excitation spectrum of the one-dimensional spin-1/2 XXZ chain with antiferromagnetic Ising anisotropy across a magnetic quantum phase transition induced by the applica…
Extraordinary surface critical behavior induced by symmetry-protected topological state of a two-dimensional quantum magnet
Zhe Wang, Fan Zhang, Wenan Guo
Using Quantum Monte Carlo simulations, we study spin-1/2 diagonal ladders coupled by ferromagnetic Heisenberg interactions. The model can also be viewed as usual ladders with ferro…
Ultrafast dynamics of optically excited charge carriers in the room-temperature antiferromagnetic semiconductor -MnTe
Changqing Zhu, Patrick Pilch, Anneke Reinold +6
We report on time-resolved optical and terahertz ultrafast spectroscopy of charge-carrier dynamics in the room-temperature antiferromagnetic semiconductor -MnTe. By optically pu…