Microwave transport approach to the coherence of interchain hopping in ( TMTSF ) 2 PF 6
نویسندگان
چکیده
We report a microwave study of the longitudinal and transverse transport properties of the quasi-one-dimensional organic conductor (TMTSF)2PF6 in its normal phase. The contactless technique have provided a direct measurement of the temperature profile of the resistivity along the b' direction and in magnetic fields up to 14 T. A characteristic energy scale (Tx ∼ 40K) has been observed which delimits a transient regime from an insulating to a metallic behavior. This anomalous profile is discussed in terms of the onset of coherent transport properties along the b' direction below 40 K. This is also supported by the observation of a finite longitudinal and transverse magnetoresitances only below 40 K, indicative of a two-dimensional regime. Below Tx, however, strong deviations with respect to a Fermi liquid behavior are evidenced.
منابع مشابه
N ov 1 99 6 Spin - Charge Separation , Anomalous Scaling and the Coherence of Hopping in exactly solved Two Chain Models
The coherence of transport between two one-dimensional interacting Fermi liquids, coupled by single particle hopping and interchain interaction, is examined in the context of two exactly soluble models. It is found that the coherence of the inter-chain hopping depends on the interplay between inter-chain hopping and inter-chain interaction terms, and not simply on the ground state spectral prop...
متن کاملCooperative phenomena in (TMTSF)2ClO4 : an NMR evidence
2014 We present 1H and 77Se NMR relaxation data on oriented (TMTSF)2ClO4 single crystals in the relaxed state. The data show the existence of three distinct regimes for the nuclear relaxation rate T-11. In the high temperature part (T > 25 K) the Korringa law seems to be well satisfied whereas in the lower temperature part we have strong deviations down to 8 K or so. At T ~ 6 K, a differen...
متن کاملCoherence-Incoherence Transition Between Fermi and Luttinger liquids
We consider conditions for existence of fermionic quasiparticles in a strongly anisotropic quasi-one-dimensional metal. The adopted model is a model of chains of spin-1/2 Luttinger liquid coupled by small interchain hopping. We determine sufficient conditions for a formation of the quasi-particle pole in the single-electron Green’s function. It is shown that the Luttinger liquid becomes more st...
متن کاملSpin-density wave versus superconducting fluctuations for quasi-one-dimensional electrons in two chains of Tomonaga-Luttinger liquids.
We study possible states at low temperatures by applying the renormalization-group method to two chains of Tomonaga-Luttinger liquids with both repulsive intrachain interactions and interchain hopping. As the energy decreases below the hopping energy, three distinct regions I, III, and II appear successively depending on properties of fluctuations. The crossover from the spin-density wave (SDW)...
متن کاملShubnikov-de Haas oscillations in an organic conductor tetramethyltetraselenafulvalene-2,5-dimethyl-7,7', 8,8' tetracyanoquinodimethane (TMTSF-DMTCNQ)
2014 The observation of Shubnikov-de Haas (SdH) oscillations in the metallic, high pressure phase (Metal-II) of TMTSF-DMTCNQ (P > 10 kbar) demonstrates the 3-dimensional, closed nature of the Fermi surface at low temperature (T 2 K). We observe very small Fermi surface crosssections of 1.16 x 1017 m-2 and 2.6 x 1017 m-2 in the ab and ac planes respectively. From the field and temperature d...
متن کامل