Kasahara, Y., Takeuchi, Y., Itou, T., Zadik, R.H., Takabayashi, Y., Ganin, A.Y. , Arčon, D., Rosseinsky, M.J., Prassides, K. and Iwasa, Y. (2014) Spin frustration and magnetic ordering in theS=12molecular antiferromagnetfcc−Cs3C60. Physical Review B, 90, 014413. (doi: 10.1103/PhysRevB.90.014413)
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Abstract
We have investigated the low-temperature magnetic state of face-centered-cubic (fcc) Cs3C60, a Mott insulator and the first molecular analog of a geometrically frustrated Heisenberg fcc antiferromagnet with S=1/2 spins. Specific heat studies reveal the presence of both long-range antiferromagnetic ordering and a magnetically disordered state below TN=2.2 K, which is in agreement with local probe experiments. These results together with the strongly suppressed TN are unexpected for conventional atom-based fcc antiferromagnets, implying that the fulleride molecular degrees of freedom give rise to the unique magnetic ground state.
| Item Type: | Articles |
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| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Ganin, Dr Alexey |
| Authors: | Kasahara, Y., Takeuchi, Y., Itou, T., Zadik, R.H., Takabayashi, Y., Ganin, A.Y., Arčon, D., Rosseinsky, M.J., Prassides, K., and Iwasa, Y. |
| College/School: | College of Science and Engineering > School of Chemistry |
| Journal Name: | Physical Review B |
| Publisher: | American Physical Society |
| ISSN: | 1098-0121 |
| ISSN (Online): | 1550-235X |
| Copyright Holders: | Copyright © 2014 APS |
| First Published: | First published in Physical Review B 90:014413 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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