Orientational ordering of C60 in the antiferromagnetic (NH3)K3C60 phase

Serena Margadonna, Kosmas Prassides, Hideo Shimoda, Taishi Takenobu, Yoshihiro Iwasa

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29 Citations (Scopus)

Abstract

The absence of superconductivity in the ammoniated alkali fulleride, (NH3)K3C60, and the transition to an antiferromagnetic (AF) Mott insulating ground state have been associated with the combined effects of crystal symmetry lowering and increased interfullerene separation. We find that the low-temperature orientational ordering motif of the C60 units in the perdeuterated analog, (ND3)K3C60, correlates well with the three-dimensional AF structure proposed by NMR, which arises through alternate stacking of two-dimensional sheets of C60, which order ferrorotationally (antiferromagnetically) along the 〈110〉 and antiferrorotationally (ferromagnetically) along the 〈11̄0〉 directions.

Original languageEnglish
Article number132414
Pages (from-to)1324141-1324144
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number13
Publication statusPublished - 2001 Oct 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Margadonna, S., Prassides, K., Shimoda, H., Takenobu, T., & Iwasa, Y. (2001). Orientational ordering of C60 in the antiferromagnetic (NH3)K3C60 phase. Physical Review B - Condensed Matter and Materials Physics, 64(13), 1324141-1324144. [132414].