Spin Impurities in Noncollinear Antiferromagnets With Mn3pt As An Example

Martin Long, A Bayri

Research output: Contribution to journalArticle

9 Citations (Scopus)


We develop a linearized theory for the classical Heisenberg model. which allows us to approximately solve for the local distortion of spins around an impurity in a non-collinear antiferromagnet. Provided that the ratio of disturbed to undisturbed bonds is small, the theory should be applicable. The theory is particularly useful when alloying lifts the degeneracy often found in non-collinear magnets. We look at the cases of gamma-Mn alloys in general, and Mn3Pt in particular. We can successfully predict the experimentally observed phase transitions caused by alloying in these materials, providing further evidence for the exotic 'hedgehog' phase.
Original languageEnglish
Pages (from-to)7719-7736
Number of pages18
JournalJournal of Physics: Condensed Matter
Issue number41
Publication statusPublished - 11 Oct 1993


Dive into the research topics of 'Spin Impurities in Noncollinear Antiferromagnets With Mn3pt As An Example'. Together they form a unique fingerprint.

Cite this