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

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

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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 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 language	English
Article number	132414
Pages (from-to)	1324141-1324144
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	64
Issue number	13
Publication status	Published - 2001 Oct 1
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

Cite this

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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 〈1{\=1}0〉 directions.",

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T1 - Orientational ordering of C60 in the antiferromagnetic (NH3)K3C60 phase

AU - Margadonna, Serena

AU - Prassides, Kosmas

AU - Shimoda, Hideo

AU - Takenobu, Taishi

AU - Iwasa, Yoshihiro

PY - 2001/10/1

Y1 - 2001/10/1

N2 - 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.

AB - 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.

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

Abstract

ASJC Scopus subject areas

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