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

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

doi:10.1016/j.solidstatesciences.2008.01.011

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

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

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

6 Scopus citations

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 language	English (US)
Pages (from-to)	1740-1744
Number of pages	5
Journal	Solid State Sciences
Volume	10
Issue number	12
DOIs	https://doi.org/10.1016/j.solidstatesciences.2008.01.011
State	Published - Dec 2008

Keywords

Charge ordering
Organic molecular conductors
Spin ladder materials
Vibrational spectroscopy

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

Access to Document

10.1016/j.solidstatesciences.2008.01.011

Cite this

@article{809715859df14d9d97f3c2c6ce8a43a2,

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

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.",

keywords = "Charge ordering, Organic molecular conductors, Spin ladder materials, Vibrational spectroscopy",

author = "Musfeldt, \{J. L.\} and S. Brown and S. Mazumdar and Clay, \{R. T.\} and M. Mas-Torrent and C. Rovira and Dias, \{J. C.\} and Henriques, \{R. T.\} and M. Almeida",

note = "Funding Information: This research is supported by NSF-DMR-0600089 (UT), DOE DE-FG02-06ER46315 (UA and MSU), DGI-CTQ2006-06333 (Spain), POCI/QVI/57528/2004 (Portugal), and MAGMANET. We thank J.T. Haraldsen, I. Olejniczak, and H. Mikre for useful discussions.",

year = "2008",

month = dec,

doi = "10.1016/j.solidstatesciences.2008.01.011",

language = "English (US)",

volume = "10",

pages = "1740--1744",

journal = "Solid State Sciences",

issn = "1293-2558",

publisher = "Elsevier Masson s.r.l.",

number = "12",

}

TY - JOUR

T1 - Infrared investigation of the charge ordering pattern in the organic spin ladder candidate (DTTTF)2Cu(mnt)2

AU - Musfeldt, J. L.

AU - Brown, S.

AU - Mazumdar, S.

AU - Clay, R. T.

AU - Mas-Torrent, M.

AU - Rovira, C.

AU - Dias, J. C.

AU - Henriques, R. T.

AU - Almeida, M.

N1 - Funding Information: This research is supported by NSF-DMR-0600089 (UT), DOE DE-FG02-06ER46315 (UA and MSU), DGI-CTQ2006-06333 (Spain), POCI/QVI/57528/2004 (Portugal), and MAGMANET. We thank J.T. Haraldsen, I. Olejniczak, and H. Mikre for useful discussions.

PY - 2008/12

Y1 - 2008/12

N2 - 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.

AB - 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.

KW - Charge ordering

KW - Organic molecular conductors

KW - Spin ladder materials

KW - Vibrational spectroscopy

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DO - 10.1016/j.solidstatesciences.2008.01.011

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