Investigating the Charge Ordering Pattern in the Organic Spin Ladder (DT-TTF)$_2$Cu(mnt)$_2$

ORAL

Abstract

Quantum spin ladders have attracted considerable interest as intermediaries between one-dimensional chains and two- dimensional square lattices. In order to elucidate the charge ordering pattern in a model organic spin ladder, we measured the temperature-dependent infrared spectra of the organic spin- ladder candidate (DT-TTF)$_2$Cu(mnt)$_2$. We interpret the results within the context of recent theoretical predictions of various charge ordering patterns in spin ladders [1]. Comparision with spectra of the isostructural Au analogue and neutral DT-TTF compound aid in this analysis. [1] R. T. Clay, S. Mazumdar, Phys. Rev. Lett. \textbf{94}, 207206 (2005)

*This work is supported by the NSF.

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Authors

  • J. Cao

  • S. Brown

  • J. T. Haraldsen

  • J. L. Musfeldt

    • University of Tennessee, Knoxville

  • M. Mas-Torrent

  • C. Rovira

    • Institut de Ci$\grave{e}$ncia de Materials de Barcelona, Spain

  • J. C. Dias

  • R. T. Henriques

  • M. Almeida

    • Instituto Tecnol$\acute{o}$gico e Nuclear, Portugal