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Doping-induced energy gap in a quantum spin chain
SrCuO2 is a prototypical S = 1/2 antiferromagnetic (AF) Heisenberg 1D spin chain system. High-resolution neutron scattering studies has already successfully revealed the gapless... -
Magnetic excitation in triangular latticce antiferromagnet alpha-CaCr2O4
The triangular Heisenberg antiferromagnet is the classic example of the frustrated magnet, here the ground state forms a non-collinear 120° structure. A number of different... -
Magnetic excitation spectrum in a new magnetically-ordered Fe-based supercond...
The aim of our experiment is to map out the excitation spectrum of the recently-discovered superconducting AxFe2Se2 system for energy transfers of up to 250 meV. This...
