Topological hall effect in pyrochlore lattice with varying density of spin chirality

K. Ueda, S. Iguchi, T. Suzuki, S. Ishiwata, Y. Taguchi, Y. Tokura

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The three-site spin correlation, S i•(S j× S k) on the neighboring triangular sites i, j and k, termed scalar spin chirality, can endow the conduction electron with a quantum Berry phase and resultant transverse (Hall) transport. The paramagnetic barely metallic state was prepared in hole-doped Y 2Mo 2O 7 with pyrochlore lattice using a high-pressure synthesis method, which is further endowed with the spin chirality by partially replacing Y site with Tb (content x). The local spin chirality formed by the adjacent three Tb Ising moments on the pyrochlore lattice can couple to the conduction electrons to give rise to the topological Hall effect whose magnitude increases in proportion to x3 or the density of the Tb-moment triangular clusters.

Original languageEnglish
Article number156601
JournalPhysical review letters
Volume108
Issue number15
DOIs
Publication statusPublished - 2012 Apr 9

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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