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Kohler, Bern; Rose, Eva; Dumm, M.; Untereiner, Gabriele; Dressel, Martin

doi:10.1103/physrevb.84.035124

Cited by 54 publications

(115 citation statements)

References 56 publications

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“…As depicted in Figure 1(a) and (b), (TMTTF) 2 SbF 6 reveals the steepest slope at the phase transition, while (TMTTF) 2 PF 6 and (TMTTF) 2 AsF 6 exhibit a smooth transition. Therefore, we conclude that for the one-dimensional salts strong resistivity changes [10] at the transition temperature are a good indication that nonlinear behavior can be observed. Otherwise, the difference is too small and the photo-induced effect is absent.…”

Section: Introductionmentioning

confidence: 95%

“…During the last years several comprehensive investigations have been conducted on the optical [5][6][7][8][9] and transport properties [10], the lattice [11,12] and electronic structure [13][14][15] as well as on the magnetic properties [16][17][18][19][20][21]. However, not much is known about the non-linear properties at the charge-order transition taking place at T CO = 157 K and transient conduction phenomena.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental characterization of (TMTTF) 2 X, X=PF 6 (black), AsF 6 (red), and SbF 6 (green) single crystals. (a) Temperature-dependence of the resistivity along the a-direction [10]. The labels mark the charge-order transition temperature T CO = 67, 102, and 157 K, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Light-Induced Current Oscillations in the Charge-Ordered State of (TMTTF)2SbF6

Peterseim¹,

Dressel²

2017

Preprint

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Below T CO = 157 K the quasi-one-dimensional charge-transfer salt (TMTTF) 2 SbF 6 undergoes a pronounced phase transition to a charge-ordered ground state. We have explored the non-linear and photoconductive behavior as a function of applied voltage, laser pulse energy and temperature. Besides a decay of the photoconductive signal in a double exponential fashion in the millisecond range, we discover current oscillations in the kHz range induced by the application of short laser pulses. While the resonance frequencies do not depend on voltage or laser intensity and vary only slightly with temperature, the amplitude changes linearly with the laser intensity and voltage. The findings are discussed and compared to comparable phenomena in other low-dimensional electron systems.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Light-Induced Current Oscillations in the Charge-Ordered State of (TMTTF)2SbF6

Peterseim¹,

Dressel²

2017

Preprint

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“…After they go through this transition (between 40 and 75 K), the shown phase diagram is no longer relevant. 4 More work is needed to understand the physics of these two systems at low temperatures, but it seems that just considering effective pressure will not be sufficient.…”

Section: Computational Detailsmentioning

confidence: 99%

“…47 It is clear that the intrachain terms, t 0 and t 1 , are the dominant hopping terms. Note that for (TMTTF) 2 PF 6 above 0.9 GPa, for Br at room temperature and for BF 4 at 100 K, the dominant in-chain t is the longer one; we have swapped the labels for these materials such that t 0 remains the strongest in-chain coupling. The labels (A) and (B) refer to the two inequivalent TMTTF molecules in each unit cell (in the absence of inversion symmetry).…”

Section: A Anion Dependence Of the Structural And Electronic Propertiesmentioning

confidence: 99%

Electronic properties of Fabre charge-transfer salts under various temperature and pressure conditions

et al. 2013

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Using density functional theory, we determine parameters of tight-binding Hamiltonians for a variety of Fabre charge transfer salts, focusing, in particular, on the effects of temperature and pressure. Besides relying on previously published crystal structures, we experimentally determine two new sets of structures: (TMTTF) 2 SbF 6 at different temperatures and (TMTTF) 2 PF 6 under various hydrostatic pressures. We find that a few trends in the electronic behavior can be connected to the complex phase diagram shown by these materials. Decreasing temperature and increasing pressure cause the systems to become more two dimensional. We analyze the importance of correlations by considering an extended Hubbard model parameterized using Wannier orbital overlaps and show that while charge order is strongly activated by the intersite Coulomb interaction, the magnetic order is only weakly enhanced. Both orders are suppressed when the effective pressure is increased.

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Charge-Order Phase Transition in the Quasi One-Dimensional Organic Conductor $${\hbox {(TMTTF)}}_2 {\hbox {NO}}_3$$

Majer

Miksch²,

Lesseux³

et al. 2020

Appl Magn Reson

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Low-dimensional organic conductors show a rich phase diagram, which has, despite all efforts, still some unexplored regions. Charge ordered phases present in many compounds of the $${\hbox {(TMTTF)}}_2X$$ (TMTTF) 2 X family are typically studied with their unique electronic properties in mind. An influence on the spin arrangement is, however, not expected at first glance. Here, we report temperature and angle dependent electron spin resonance (ESR) measurements on the quasi one-dimensional organic conductor $${\hbox {(TMTTF)}}_2 {\hbox {NO}}_3$$ (TMTTF) 2 NO 3 . We found that the $${\hbox {(TMTTF)}}_2 {\hbox {NO}}_3$$ (TMTTF) 2 NO 3 compound develops a peculiar anisotropy with a doubled periodicity ($$ab'$$ a b ′ -plane) of the ESR linewidth below about $$T_{\text {CO}}= ({250\pm 10})~\hbox {K}$$ T CO = ( 250 ± 10 ) K . This behavior is similar to observations in the related compounds $${\hbox {(TMTTF)}}_2X$$ (TMTTF) 2 X ($$X = {\hbox {PF}}_6$$ X = PF 6 , $${\hbox {SbF}}_6$$ SbF 6 and $${\hbox {AsF}}_6$$ AsF 6 ), where it has been attributed to relaxation processes of magnetically inequivalent sites in the charge-ordered state. For the structural analogous $${\hbox {(TMTTF)}}_2 {\hbox {ClO}}_4$$ (TMTTF) 2 ClO 4 , known for the absence of charge order, such angular dependence of the ESR signal is not observed. Therefore, our ESR measurements lead us to conclude that a charge-order phase is stabilized in the title compound below $$T_{\text {CO}} \approx 250~\hbox {K}$$ T CO ≈ 250 K .

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Comprehensive transport study of anisotropy and ordering phenomena in quasi-one-dimensional(TMTTF)2Xsalts (X=
Bern Kohler
¹
,
Eva Rose
²
,
M. Dumm
³

et al.

Cited by 54 publications

References 56 publications

Light-Induced Current Oscillations in the Charge-Ordered State of (TMTTF)2SbF6

Light-Induced Current Oscillations in the Charge-Ordered State of (TMTTF)2SbF6

Electronic properties of Fabre charge-transfer salts under various temperature and pressure conditions

Charge-Order Phase Transition in the Quasi One-Dimensional Organic Conductor $${\hbox {(TMTTF)}}_2 {\hbox {NO}}_3$$

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Comprehensive transport study of anisotropy and ordering phenomena in quasi-one-dimensional(TMTTF)2Xsalts (X=Bern Kohler1, Eva Rose2, M. Dumm3 et al.

Cited by 54 publications

References 56 publications

Light-Induced Current Oscillations in the Charge-Ordered State of (TMTTF)2SbF6

Light-Induced Current Oscillations in the Charge-Ordered State of (TMTTF)2SbF6

Electronic properties of Fabre charge-transfer salts under various temperature and pressure conditions

Charge-Order Phase Transition in the Quasi One-Dimensional Organic Conductor $${\hbox {(TMTTF)}}_2 {\hbox {NO}}_3$$

Contact Info

Product

Resources

About

Comprehensive transport study of anisotropy and ordering phenomena in quasi-one-dimensional(TMTTF)2Xsalts (X=
Bern Kohler
¹
,
Eva Rose
²
,
M. Dumm
³

et al.