Orbital-exchange and fractional quantum number excitations in an f-electron metal, Yb₂Pt₂Pb
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Exotic quantum states and fractionalized magnetic excitations, such as spinons in one-dimensional chains, are generally expected to occur in 3d transition metal systems with spin 1/2. Our neutron-scattering experiments on the 4f-electron metal Yb2Pt2Pb overtur... ...
