Electronic correlations versus lattice interactions: Interplay of charge and anion orders in 
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Pustogow, Andrej; Peterseim, Tobias; Kolatschek, Sascha; Engel, Lena; Dressel, Martin

doi:10.1103/physrevb.94.195125

Cited by 29 publications

(62 citation statements)

References 55 publications

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“…While in (TMTTF) 2 PF 6 and (TMTTF) 2 AsF 6 a mean-field behavior appears, a first-order like transition takes place in (TMTTF) 2 SbF 6 . The latter is probably related to the enhanced dimerization (see [10,12]) and the charge localization state at elevated temperatures. This behavior is even more pronounced in (TMTTF) 2 TaF 6 , where the phase transition takes place at T CO = 177 K and 2δ = 00.28e is of comparable size [41].…”

Section: Response To Electric Fieldsmentioning

confidence: 99%

“…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%

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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.

show abstract

Section: Response To Electric Fieldsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Peterseim¹,

Dressel²

2017

Preprint

View full text Add to dashboard Cite

show abstract

“…While in (TMTTF) 2 PF 6 and (TMTTF) 2 AsF 6 a mean-field behavior appears, a first-order-like transition takes place in (TMTTF) 2 SbF 6 . The latter is probably related to the enhanced dimerization (see [10,12]) and the charge localization state at elevated temperatures. This behavior is even more pronounced in (TMTTF) 2 TaF 6 , where the phase transition takes place at T CO = 177 K and 2δ = 00.28e is of comparable size [42].…”

Section: Response To Electric Fieldsmentioning

confidence: 99%

“…In recent 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%

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

Peterseim

Dressel

2017

Crystals

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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. We suggest that photo-induced fluctuations of the charge-ordered state alter the current flow of the single particles and hence, the photocurrent. The findings are discussed and compared to comparable phenomena in other low-dimensional electron systems.

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“…In our study, representing ρ rich (ρ poor ) as the rich (poor) value of the charge of the two closest TMTTF molecules forming a dimer, δ co ≡ ρ rich − ρ poor ≥ 0 is treated. The observed finite δ co values in (TMTTF) 2 PF 6 below 67 K [22][23][24] indicate that the SP phase also has the characteristics of the CO phase of (TMTTF) 2 PF 6 . In the theoretical works on other materials in terms of the PIPTs [25][26][27][28], the photoexcitations associated with the collective excitations of charges, namely, multiexcitons, have been discussed.…”

Section: Introductionmentioning

confidence: 99%

Photoexcitation of a one-dimensional polarization-inverted domain from the charge-ordered ferroelectric ground state of (TMTTF)2PF6

et al. 2019

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We theoretically revealed that a weak photoexcitation achieves the electric polarization-inversion with approximately 18% of all the charges, which was interpreted as a superimposition of multiexciton states, from the charge-ordered ferroelectric ground state of (TMTTF) 2 PF 6 at absolute zero temperature. Regarding a relative change of electric polarization (∆P/P ), the photoexcitation corresponds to 36%, which is much larger than ∆P/P of other typical organic materials. The value of ∆P/P ∼ 36% can be enlarged by a strong photoexcitation. This fact is useful not only for applications of this material and other analogous materials in optical devices but also for researches toward controlling electric polarizations by light, which is one of the recent attracting issues on photoinduced phase transition phenomena. The photoexcitation of ∆P/P ∼ 36% corresponds to the single peak of the optical conductivity in the low-energy region, which was also observed at 10 K. Theoretical calculations are based on a quarter-filled one-dimensional effective model with appropriate parameters and 50 unit cells.

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Electronic correlations versus lattice interactions: Interplay of charge and anion orders in (TMTTF)2X

Cited by 29 publications

References 55 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

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

Photoexcitation of a one-dimensional polarization-inverted domain from the charge-ordered ferroelectric ground state of (TMTTF)2PF6

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