Infrared investigation of the charge ordering pattern in the organic spin ladder candidate (DTTTF)2Cu(mnt)2

J. L. Musfeldt, S. Brown, Sumitendra Mazumdar, R. T. Clay, M. Mas-Torrent, C. Rovira, J. C. Dias, R. T. Henriques, M. Almeida

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We measured the variable temperature infrared response of the spin ladder candidate (DTTTF)2Cu(mnt)2 in order to distinguish between two competing ladder models, rectangular versus zigzag, proposed for this family of materials. The distortion along the stack direction below 235 K is consistent with a doubling along b through the metal-insulator transition. While this would agree with either of the ladder models, the concomitant transverse distortion rules out the rectangular ladder model and supports the zigzag scenario. Intramolecular distortions within the DTTTF building block molecule also give rise to on-site charge asymmetry.

Original languageEnglish (US)
Pages (from-to)1740-1744
Number of pages5
JournalSolid State Sciences
Volume10
Issue number12
DOIs
StatePublished - Dec 2008

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Ladders
ladders
Infrared radiation
Metal insulator transition
asymmetry
insulators
Molecules
metals
molecules
Temperature
temperature

Keywords

  • Charge ordering
  • Organic molecular conductors
  • Spin ladder materials
  • Vibrational spectroscopy

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Infrared investigation of the charge ordering pattern in the organic spin ladder candidate (DTTTF)2Cu(mnt)2. / Musfeldt, J. L.; Brown, S.; Mazumdar, Sumitendra; Clay, R. T.; Mas-Torrent, M.; Rovira, C.; Dias, J. C.; Henriques, R. T.; Almeida, M.

In: Solid State Sciences, Vol. 10, No. 12, 12.2008, p. 1740-1744.

Research output: Contribution to journalArticle

Musfeldt, JL, Brown, S, Mazumdar, S, Clay, RT, Mas-Torrent, M, Rovira, C, Dias, JC, Henriques, RT & Almeida, M 2008, 'Infrared investigation of the charge ordering pattern in the organic spin ladder candidate (DTTTF)2Cu(mnt)2', Solid State Sciences, vol. 10, no. 12, pp. 1740-1744. https://doi.org/10.1016/j.solidstatesciences.2008.01.011
Musfeldt, J. L. ; Brown, S. ; Mazumdar, Sumitendra ; Clay, R. T. ; Mas-Torrent, M. ; Rovira, C. ; Dias, J. C. ; Henriques, R. T. ; Almeida, M. / Infrared investigation of the charge ordering pattern in the organic spin ladder candidate (DTTTF)2Cu(mnt)2. In: Solid State Sciences. 2008 ; Vol. 10, No. 12. pp. 1740-1744.
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