Superconductivity at 5.2 K in an Electron Donor Radical Salt of Bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) with the Novel Polyfluorinated Organic Anion SF5CH2CF2SO3-

Geiser, U.; Schlueter, John A.; Wang, H. Hau; Kini, A. M.; Williams, Jack M.; Sche, Paul P.; Zakowicz, Halina I.; VanZile, Michael L.; Dudek, James D.; Nixon, Paul; Winter, R.; Gard, Gary L.; Ren, J.; Whangbo, Myung Hwan

doi:10.1021/ja962188l

Cited by 145 publications

(119 citation statements)

References 16 publications

Supporting

Mentioning

116

Contrasting

Order By: Relevance

“…The investigated single crystals of κ-(BEDT-TTF) 2 Cu(NCS) 2 and β″-(BEDT-TTF) 2 SF 5 CH 2 CF 2 SO 3 were prepared by standard electrochemical processes described elsewhere [26,27]. The specific heat was measured by use of a continuous relaxation technique as described in more detail in the Appendix of Ref.…”

Section: Methodsmentioning

confidence: 99%

Emerging evidence for FFLO states in layered organic superconductors (Review Article)

Beyer

Wosnitza

2013

Low Temperature Physics

View full text Add to dashboard Cite

In this short review, we report on the recently found growing experimental evidence for the existence of Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states in quasi-two-dimensional organic superconductors. At high magnetic fields aligned parallel to the conducting organic layers, we observe an upturn of the upper critical field beyond the Pauli limit, as evidenced by specific-heat and torque-magnetization measurements. Inside the superconducting state a second thermodynamic transition emerges. These features appear only in a very narrow angular region close to parallel-field orientation.

show abstract

Section: Methodsmentioning

confidence: 99%

Emerging evidence for FFLO states in layered organic superconductors (Review Article)

Beyer

Wosnitza

2013

Low Temperature Physics

View full text Add to dashboard Cite

show abstract

“…Additional experiments have been performed in a 3 He cryostat equipped with a 15 T magnet measuring torque-dHvA and SdH signals simultaneously. The crystals were grown by electrocrystallization at the Argonne National Laboratory [27].…”

Section: Methodsmentioning

confidence: 99%

Spin-zero anomaly in the magnetic quantum oscillations of a two-dimensional metal

et al. 2008

View full text Add to dashboard Cite

Fermiology and superconductivity at high magnetic fields in a completely organic cation radical salt J S Brooks, V Williams, E Choi et al. Abstract. We report on an anomalous behavior of the spin-splitting zeros in the de Haas-van Alphen (dHvA) signal of a quasi-two-dimensional organic superconductor. The zeros as well as the angular dependence of the amplitude of the second harmonic deviate remarkably from the standard Lifshitz-Kosevich (LK) prediction. In contrast, the angular dependence of the fundamental dHvA amplitude as well as the spin-splitting zeros of the Shubnikov-de Haas (SdH) signal follow the LK theory. We can explain this behavior of the dHvA signal by small chemical-potential (CP) oscillations and find a very good agreement between theory and experiment. A detailed wave-shape analysis 7 Present address: Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK. 8 Author to whom any correspondence should be addressed. of the dHvA oscillations corroborates the existence of an oscillating CP. We discuss the absence of the above spin-zero effect in the SdH signal and argue that in β -(BEDT-TTF) 2 SF 5 CH 2 CF 2 SO 3 it can be explained by an incoherent variable range hopping interlayer transport which is insensitive to the small CP oscillations. Contents

show abstract

“…Figures 4-6 show the calculated values of, respectively, U m ͑v͒ , ⑀ m , and m for experimental geometries taken from x-ray scattering experiments on crystals with a wide range of anions and several different polymorphs. The crystallographic data sets [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] used to determine the nuclear positions include data taken at a range of temperatures and under different pressures. Details of the calculated Hubbard parameters and the crystallographic measurements on which the calculations are based are given in the supplementary information.…”

Section: Impurity Scattering Polymorphism and Chemical Pressurementioning

confidence: 99%

“…[35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] In Sec. IV we will discuss various schemes for relaxing these atomic positions and for calculating U m ͑v͒ , therefore we delay defining these methods to that section.…”

mentioning

confidence: 99%

Toward the parametrization of the Hubbard model for salts of bis(ethylenedithio)tetrathiafulvalene: A density functional study of isolated molecules

Scriven

Powell

2009

The Journal of Chemical Physics

View full text Add to dashboard Cite

Articles you may be interested in A self-consistent Hubbard U density-functional theory approach to the addition-elimination reactions of hydrocarbons on bare FeO + J. Chem. Phys. 129, 134314 (2008) argue that this variation in the site energy plays a key role in understanding the role of disorder in bis͑ethylenedithio͒tetrathiafulvalene salts. We explain the differences between the ␤ L and ␤ H phases of ͑BEDT-TTF͒ 2 I 3 on the basis of calculations of the effects of disorder.

show abstract

Superconductivity at 5.2 K in an Electron Donor Radical Salt of Bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) with the Novel Polyfluorinated Organic Anion SF₅CH₂CF₂SO₃^-

Cited by 145 publications

References 16 publications

Emerging evidence for FFLO states in layered organic superconductors (Review Article)

Emerging evidence for FFLO states in layered organic superconductors (Review Article)

Spin-zero anomaly in the magnetic quantum oscillations of a two-dimensional metal

Toward the parametrization of the Hubbard model for salts of bis(ethylenedithio)tetrathiafulvalene: A density functional study of isolated molecules

Contact Info

Product

Resources

About