Quantum Impurity in a Nearly Critical Two-Dimensional Antiferromagnet
نویسندگان
چکیده
منابع مشابه
Quantum impurity in a nearly critical two-dimensional antiferromagnet
The spin dynamics of an arbitrary localized impurity in an insulating two-dimensional antiferromagnet, across the host transition from a paramagnet with a spin gap to a Neel state, is described. The impurity spin susceptibility has a Curie-like divergence at the quantum-critical coupling, but with a universal effective spin that is neither an integer nor a half-odd integer. In the Neel state, t...
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ژورنال
عنوان ژورنال: Science
سال: 1999
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.286.5449.2479