Holes in a quantum spin liquid

Guangyong Xu, G. Aeppli, M. E. Bisher, C. Broholm, J. F. DiTusa, C. D. Frost, T. Ito, K. Oka, R. L. Paul, H. Takagi, M. M.J. Treacy

Research output: Contribution to journalArticlepeer-review

61 Scopus citations


Magnetic neutron scattering provides evidence for nucleation of antiferromagnetic droplets around impurities in a doped nickel oxide-based quantum magnet. The undoped parent compound contains a spin liquid with a cooperative singlet ground state and a gap in the magnetic excitation spectrum. Calcium doping creates excitations below the gap with an incommensurate structure factor. We show that weakly interacting antiferromagnetic droplets with a central phase shift of π and a size controlled by the correlation length of the quantum liquid can account for the data. The experiment provides a quantitative impression of the magnetic polarization cloud associated with holes in a doped transition metal oxide.

Original languageEnglish (US)
Pages (from-to)419-422
Number of pages4
Issue number5478
StatePublished - Jul 21 2000
Externally publishedYes

ASJC Scopus subject areas

  • General


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