## The Hall effect in the organic conductor TTF–TCNQ: choice of geometry for accurate measurements of a highly anisotropic system

Publication: Research - peer-review › Journal article – Annual report year: 2012

### Standard

**The Hall effect in the organic conductor TTF–TCNQ: choice of geometry for accurate measurements of a highly anisotropic system.** / Tafra, E; Čulo, M; Basletić, M; Korin-Hamzić, B; Hamzić, A; Jacobsen, Claus Schelde.

Publication: Research - peer-review › Journal article – Annual report year: 2012

### Harvard

*Journal of Physics: Condensed Matter*, vol 24, no. 4, pp. 045602. DOI: 10.1088/0953-8984/24/4/045602

### APA

*Journal of Physics: Condensed Matter*,

*24*(4), 045602. DOI: 10.1088/0953-8984/24/4/045602

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### MLA

*Journal of Physics: Condensed Matter*. 2012, 24(4). 045602. Available: 10.1088/0953-8984/24/4/045602

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### Author

### Bibtex

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### RIS

TY - JOUR

T1 - The Hall effect in the organic conductor TTF–TCNQ: choice of geometry for accurate measurements of a highly anisotropic system

AU - Tafra,E

AU - Čulo,M

AU - Basletić,M

AU - Korin-Hamzić,B

AU - Hamzić,A

AU - Jacobsen,Claus Schelde

PY - 2012

Y1 - 2012

N2 - We have measured the Hall effect on recently synthesized single crystals of the quasi-one-dimensional organic conductor TTF–TCNQ (tetrathiafulvalene–tetracyanoquinodimethane), a well known charge transfer complex that has two kinds of conductive stacks: the donor (TTF) and the acceptor (TCNQ) chains. The measurements were performed in the temperature interval 30 K <T <300 K and for several different magnetic field and current directions through the crystal. By applying the equivalent isotropic sample approach, we have demonstrated the importance of the choice of optimal geometry for accurate Hall effect measurements. Our results show, contrary to past belief, that the Hall coefficient does not depend on the geometry of measurements and that the Hall coefficient value is approximately zero in the high temperature region (T > 150 K), implying that there is no dominance of either the TTF or the TCNQ chain. At lower temperatures our measurements clearly prove that all three phase transitions of TTF–TCNQ could be identified from Hall effect measurements.

AB - We have measured the Hall effect on recently synthesized single crystals of the quasi-one-dimensional organic conductor TTF–TCNQ (tetrathiafulvalene–tetracyanoquinodimethane), a well known charge transfer complex that has two kinds of conductive stacks: the donor (TTF) and the acceptor (TCNQ) chains. The measurements were performed in the temperature interval 30 K <T <300 K and for several different magnetic field and current directions through the crystal. By applying the equivalent isotropic sample approach, we have demonstrated the importance of the choice of optimal geometry for accurate Hall effect measurements. Our results show, contrary to past belief, that the Hall coefficient does not depend on the geometry of measurements and that the Hall coefficient value is approximately zero in the high temperature region (T > 150 K), implying that there is no dominance of either the TTF or the TCNQ chain. At lower temperatures our measurements clearly prove that all three phase transitions of TTF–TCNQ could be identified from Hall effect measurements.

U2 - 10.1088/0953-8984/24/4/045602

DO - 10.1088/0953-8984/24/4/045602

M3 - Journal article

VL - 24

SP - 045602

JO - Journal of Physics: Condensed Matter

T2 - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 0953-8984

IS - 4

ER -