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Title: Nonmagnetic impurity in spin gap state
Authors: Nagaosa, Naoto
Ng, Tai-Kai
Keywords: Nonmagnetic impurity
Anderson localization
Gauge interaction
Spin gap
Issue Date: Jun-1995
Citation: Physical review. B, v. 51, iss. 21, June 1995, p. 15588-15591
Abstract: The effects of the nonmagnetic strong scatterers (unitary limit) on the magnetic and transport properties are studied for RVB states in both slave-boson and slave-fermion mean field theories with the gap for the triplet excitations. In the d-wave pairing state of the slave-boson mean field theory in two dimensions, there is no true gap for spinons but the Anderson localization occurs which lead to the local moment when the repulsive interaction is taken into account. In the slave-fermion mean field theory, local moments are found bound to non-magnetic impurities as a result of (staggered) gauge interaction. However, in both theories, localization of spinon does not appear in the resistivity, which shows the classical value for the holon.
Rights: Physical Review, B © copyright (1995) American Physical Society. The Journal's web site is located at
Appears in Collections:PHYS Journal/Magazine Articles

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