Conduction anisotropy, Hall effect, and magnetoresistance of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo>(</mml:mo><mml:mi mathvariant="normal">TMTSF</mml:mi><mml:mrow><mml:msub><mml:mrow><mml:mo>)</mml:mo></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">ReO</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>at high temperatures

Korin-Hamzić, Bojana; Tafra, Emil; Basletić, Mario; Hamzić, Amir; Untereiner, Gabriele; Dressel, Martin

doi:10.1103/physrevb.67.014513

Cited by 15 publications

(20 citation statements)

References 31 publications

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“…where A is a dimensionless constant and W the bandwidth of the material. This shows that some temperature dependence is to be expected in the Luttinger regime, in qualitative agreement with the observations [56,57]. As one can obtain the crossover temperature T * , one can also determine the deconfinement critical value t * ⊥ from the transport measurements.…”

Section: Coupled Chainssupporting

confidence: 88%

“…However both the theory and the experiments concerning this quantity are more complicated. Experiments with the magnetic field along the c axis [56,57] observe a weak temperature dependence while field along a leads to an essentially temperature independent Hall effect [58]. On the theoretical side, quite surprisingly it was shown that in the absence of scattering along the chains the Hall effect in a Luttinger liquid does not show any trace of the interactions and is equal to the band value [59,60] R 0 h .…”

Section: Coupled Chainsmentioning

confidence: 99%

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From Luttinger to Fermi Liquids in Organic Conductors

Giamarchi

2008

The Physics of Organic Superconductors and Conductors

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This chapter reviews the effects of interactions in quasi-one dimensional systems, such as the Bechgaard and Fabre salts, and in particular the Luttinger liquid physics. It discusses in details how transport measurements both d.c. and a.c. allow to probe such a physics. It also examine the dimensional crossover and deconfinement transition occurring between the one dimensional case and the higher dimensional one resulting from the hopping of electrons between chains in the quasione dimensional structure

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Section: Coupled Chainssupporting

confidence: 88%

Section: Coupled Chainsmentioning

confidence: 99%

From Luttinger to Fermi Liquids in Organic Conductors

Giamarchi

2008

The Physics of Organic Superconductors and Conductors

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“…17 Recently, we have investigated the metallic state of (TMTSF) 2 ReO 4 (more anisotropic than the X = PF 6 ), aiming to shed more light on FL or LL concepts from transport measurements and particularly Hall effect. 18 The pronounced conductivity anisotropy, a small and smoothly temperature dependent Hall effect (where the obtained R H values indicate that all the carriers contribute to the metalliclike transport) and a small, positive and temperature dependent magnetoresistance were analyzed within FL and non-FL models: although not fully conclusive, these data nevertheless favor the FL description. We have also proposed that the possible appearance of the LL features in the transport properties should be found in the more anisotropic (TMTTF) 2 X series, where the interchain interactions play a minor role.…”

Section: Itmentioning

confidence: 99%

Conduction anisotropy and Hall effect in the organic conductor(TMTTF)2AsF6: Evidence for Luttinger liquid behavior and charge ordering

et al. 2006

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We present the high-temperature (70 K < T < 300 K) resistivity anisotropy and Hall effect measurements of the quasi-one-dimensional (1D) organic conductor (TMTTF)2AsF6. The temperature variations of the resistivity are pronouncedly different for the three different directions, with metalliclike at high temperatures for the a-axis only. Above 220 K the Hall coefficient RH is constant, positive and strongly enhanced over the expected value; and the corresponding carrier concentration is almost 100 times lower than calculated for one hole/unit cell. Our results give evidence for the existence of a high-temperature regime above 200 K where the 1D Luttinger liquid features appear in the transport properties. Our measurements also give strong evidence of charge ordering in (TMTTF)2AsF6. At the charge-ordering transition TCO ≈ 100 K, RH (T ) abruptly changes its behavior, switches sign and rapidly increases with further temperature decrease.

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“…Many researchers have already reported the TLL state in a number of other quasi-1D conductors, [25][26][27][36][37][38] but the experimentally determined exponents K ρ in other compounds were ∼ 0.25 which is much smaller than the lower limit for the standard Hubbard model, K ρ = 1/2, whereas K ρ can be any small value when there is the intersite Coulomb interaction V .…”

Section: Resultsmentioning

confidence: 99%

“…24) This means that the effect of thermal expansion on transport measurements is a serious problem below 1 GPa. [25][26][27] In our case, the metallic state appears under pressures beyond 5.7 GPa ( 0.4 GPa), where the constant-volume of (TTM-TTP)I 3 will be obtained for a wide-temperature region because of very high compression. Moreover, our cubic anvil pressure apparatus rigorously maintains constant pressure in the course of the temperature cycle.…”

Section: Resultsmentioning

confidence: 99%

Metallization of the Organic Conductor (TTM-TTP)I₃with a Highly One-Dimensional Half-Filled Band under Pressure beyond 7 GPa

et al. 2007

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It is theoretically predicted that the ground state of the one-dimensional (1D) half-filled system is the Mott insulator at any positive on-site Coulomb interaction U . In this paper, we demonstrate that (TTM-TTP)I3 with a highly 1D half-filled energy band is almost metallized by the application of pressure beyond 7 GPa. We find that the metal-insulator transition temperature decreases linearly with increasing pressure and is directing towards 0 K near 10 GPa. Above 5.7 GPa, the metallic behaviors are observed in the high-temperature region for 70 < T < 300 K, in which the temperature dependence of the resistivity is described by ρ(T ) ∝ T α with α ∼ 0.3. The nature of the metallic state is discussed in terms of the Tomonaga-Luttinger liquid described by the Hubbard model. KEYWORDS: (TTM-TTP)I3, organic conductor, one-dimensional system, half-filling, high-pressure, Tomonaga-Luttinger liquid, Hubbard model, Kρ IntroductionMetal-insulator (MI) transitions by Coulomb interaction are accompanied with huge resistance change and are widely observed in strongly correlated systems. Many theories of strongly correlated systems begin with a Hubbard model because of its simplicity.1) The Hubbard model is the prototypical model used for the description of correlated fermions in a variety of materials, ranging from high-T c superconductors to heavy fermion compounds and organic molecular crystals. In spite of its apparent simplicity, there is still no general solution, or even a consensus on its fundamental properties for the Hubbard model. Notable exceptions are the cases of oneand infinite-dimensions.2, 3) In one-dimension, an exact solution is available.4) Especially, the one-dimensional (1D) half-filled case is special but important because it corresponds to the strong coupling limit of the Hubbard model, i.e., U → ∞. 5) That is, no matter how small U is, the ground state is the Mott insulator. Thus metallization of the 1D half-filled system is one of the most challenging problems in the strongly correlated electronic systems.In this paper, we report the metallization of (TTM-TTP)I 3 with a highly 1D half-filled band, 6) where TTM-TTP stands for 2,5-bis[4,5-bis(methylthio)-1,3-dithiol-2-ylidene]-1,3,4,6-tetrathiapentalene [see Fig. 1(a)]. 7,8) In the interchain directions, the TTM-TTP molecules cannot approach close to each other because of the steric hindrance of the terminal -SCH 3 groups.7) According to the band structure calculation, the interchain interactions, t a , t b (< 0.01 eV) are less than 1/20 of the intrachain interaction, t c = 0.26 eV, which is much more onedimensional than the typical quasi-1D Bechgaard salts.

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Conduction anisotropy, Hall effect, and magnetoresistance of(TMTSF)2ReO4at high temperatures

Cited by 15 publications

References 31 publications

From Luttinger to Fermi Liquids in Organic Conductors

From Luttinger to Fermi Liquids in Organic Conductors

Conduction anisotropy and Hall effect in the organic conductor(TMTTF)2AsF6: Evidence for Luttinger liquid behavior and charge ordering

Metallization of the Organic Conductor (TTM-TTP)I₃with a Highly One-Dimensional Half-Filled Band under Pressure beyond 7 GPa

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Conduction anisotropy, Hall effect, and magnetoresistance of(TMTSF)2ReO4at high temperatures

Cited by 15 publications

References 31 publications

From Luttinger to Fermi Liquids in Organic Conductors

From Luttinger to Fermi Liquids in Organic Conductors

Conduction anisotropy and Hall effect in the organic conductor(TMTTF)2AsF6: Evidence for Luttinger liquid behavior and charge ordering

Metallization of the Organic Conductor (TTM-TTP)I3with a Highly One-Dimensional Half-Filled Band under Pressure beyond 7 GPa

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Product

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Metallization of the Organic Conductor (TTM-TTP)I₃with a Highly One-Dimensional Half-Filled Band under Pressure beyond 7 GPa