High Magnetic Fields:  A Tool for Studying Electronic Properties of Layered Organic Metals

Kartsovnik, M.V.

doi:10.1021/cr0306891

Cited by 226 publications

(257 citation statements)

References 294 publications

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“…These results imply that the α-FS is 3D in nature, but very anisotropic, exhibiting significant 2D character. The 2D feature of the F α band is also manifested in the presence of a strong harmonic peak in the FFT spectrum [55] as indicated above (Fig. 2a).…”

Section: Dhva Oscillations In Zrsissupporting

confidence: 59%

“…The value of the Landé g-factor can be evaluated from the peak splitting. In the case of the Zeeman energy being smaller than the half of LL spacing [54], g is estimated to be ~38 using Alternatively, from the spin-zero method which is frequently used in quantum oscillation studies of organic conductors [55] and High-T c cuprates [61][62][63], a similar g-factor (g=37.4) can also be obtained from the angular dependence of the dHvA oscillation amplitude (see Supplementary…”

Section: Dhva Oscillations In Zrsismentioning

confidence: 99%

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Nearly massless Dirac fermions and strong Zeeman splitting in the nodal-line semimetal ZrSiS probed by de Haas–van Alphen quantum oscillations

et al. 2017

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Section: Dhva Oscillations In Zrsissupporting

confidence: 59%

Section: Dhva Oscillations In Zrsismentioning

confidence: 99%

Nearly massless Dirac fermions and strong Zeeman splitting in the nodal-line semimetal ZrSiS probed by de Haas–van Alphen quantum oscillations

et al. 2017

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“…20,21 The existence of coherent quasiparticles is also apparent from the observed magnetic quantum oscillations at low temperatures in -͑ET͒ 2 X. [22][23][24] However, NMR experiments ͑see Figs. 1 and 2͒ on the metallic phase on -͑ET͒ 2 X are not consistent with a Fermi-liquid description.…”

Section: Introductionmentioning

confidence: 99%

Antiferromagnetic spin fluctuations in the metallic phase of quasi-two-dimensional organic superconductors

2007

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We give a quantitative analysis of the previously published nuclear magnetic resonance ͑NMR͒ experiments in the -͑ET͒ 2 X family of organic charge-transfer salts. The temperature dependence of the nuclear-spin relaxation rate 1 / T 1 , the Knight shift K s , and the Korringa ratio K is compared to the predictions of the phenomenological spin-fluctuation model of Moriya and Millis, Monien, and Pines ͑M-MMP͒, that has been used extensively to quantify antiferromagnetic spin fluctuations in the cuprates. For temperatures above T NMR Ӎ 50 K, the model gives a good quantitative description of the data in the metallic phases of several -͑ET͒ 2 X materials. These materials display antiferromagnetic correlation lengths which increase with decreasing temperature and grow to several lattice constants by T NMR . It is shown that the fact that the dimensionless Korringa ratio is much larger than unity is inconsistent with a broad class of theoretical models ͑such as dynamical mean-field theory͒ which neglects spatial correlations and/or vertex corrections. For materials close to the Mott insulating phase the nuclear-spin relaxation rate, the Knight shift, and the Korringa ratio all decrease significantly with decreasing temperature below T NMR . This cannot be described by the M-MMP model and the most natural explanation is that a pseudogap, similar to that observed in the underdoped cuprate superconductors, opens up in the density of states below T NMR . Such a pseudogap has recently been predicted to occur in the dimerized organic charge-transfer salts materials by the resonating valence bond ͑RVB͒ theory. We propose specific experiments on organic superconductors to elucidate these issues. For example, measurements to see if high magnetic fields or high pressures can be used to close the pseudogap would be extremely valuable.

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“…(2) predicts sharp minima of interlayer magnetoconductivity σ zz (θ) at the so-called Yamaji angles, corresponding to the zeros of the Bessel function J 0 (κ). These Yamaji angles have been observed in many experiments [4] and used to extract the value of k F d. At the Yamaji angles the first term of (2) is zero, and the second one predicts the quadratic field dependence of interlayer conductivity. Nevertheless, there are experimental data in organic metalls, that can not be described with quadratic field dependence.…”

Section: Introductionmentioning

confidence: 93%

Interplay between angular and quantum magnetoresistance oscillations

Grigoriev

Mogilyuk

2018

J. Phys.: Conf. Ser.

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Abstract. We investigate the mutual influence of angular (AMRO) and quantum oscillations (MQO) of interlayer magnetoresistance Rzz(θ) in quasi-two-dimensional (quasi-2D) layered metals. The MQO and the shape of Landau levels (LL) affects the AMRO amplitude. The influence of AMRO on MQO leads to the new qualitative effect: the angular oscillations of the amplitude of MQO, called "false spin zeros", that could lead to a wrong determination of electron g-factor from experiment.

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High Magnetic Fields: A Tool for Studying Electronic Properties of Layered Organic Metals

Cited by 226 publications

References 294 publications

Nearly massless Dirac fermions and strong Zeeman splitting in the nodal-line semimetal ZrSiS probed by de Haas–van Alphen quantum oscillations

Nearly massless Dirac fermions and strong Zeeman splitting in the nodal-line semimetal ZrSiS probed by de Haas–van Alphen quantum oscillations

Antiferromagnetic spin fluctuations in the metallic phase of quasi-two-dimensional organic superconductors

Interplay between angular and quantum magnetoresistance oscillations

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