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Overcompensated impurities in antiferromagnetic Heisenberg chains
Journal of Applied Physics, 1991An impurity of spin S′=1/2 is introduced in the Babujian-Takhtajian Heisenberg model of spin S in one dimension. The impurity is located on the mth link of the chain and interacts with both neighboring sites. The interaction between impurity and Heisenberg chain is of a special type so that the integrability is preserved.
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Handicaps and Overcompensation
Journal of Russian & East European Psychology, 2022openaire +1 more source

