Holes in a Quantum Spin Liquid
摘要
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 and a size controlled by the correlation length of the quantum liquid can account for the data. The experiment provides a first quantitative impression of the magnetic polarization cloud associated with holes in a doped transition metal oxide.
引用
@article{arxiv.cond-mat/0102445,
title = {Holes in a Quantum Spin Liquid},
author = {Guangyong Xu and G. Aeppli and M. E. Bisher and C. Broholm and J. F. DiTusa and C. D. Frost and T. Ito and K. Oka and R. L. Paul and H. Takagi and M. M. J. Treacy},
journal= {arXiv preprint arXiv:cond-mat/0102445},
year = {2015}
}
备注
tex file for 5 pages and four figures in separated jpg files