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2016-11-13
Spin pseudogap in the chain material SrCuO with impurities
G. SimutisS. GvasaliyaN. S. BeesettyT. YoshidaJ. RobertS. PetitA. I. KolesnikovM. B. StoneF. BourdarotH. C. WalkerD. T. AdrojaO. SobolevC. HessT. MasudaA. RevcolevschiB. BüchnerA. Zheludev
文献摘要
The low energy magnetic excitation spectrum of the Heisenberg antiferromagnetic chain system SrCuO with Ni- and Ca-impurities is studied by neutron spectroscopy. In all cases, a defect-induced spectral pseudogap is observed and shown to scale proportionately to the number of scattering centers in the spin chains.
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