Thermoelectric effect in layered conductors at low temperatures

Galbova, O.; Kirichenko, O. V.; Peschanskii, V. G.

doi:10.1063/1.3253405

Cited by 7 publications

(3 citation statements)

References 4 publications

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“…For T ≪ Θ D , electronphonon scattering processes make a significant contribution to the energy relaxation. In that case, τ ε is proportional to T 3 and the momentum relaxation time τ p is proportional to T 5 [19]. The presence of the latter term indicates presence of a significant momentum relaxation dynamics in the CDW 0 state.…”

Section: Temperature Dependence Of the Nernst Effectmentioning

confidence: 96%

“…4. Also, the Nernst effect is most clearly manifested when the temperature gradient and the velocity vector of the q1D charge carriers are not perpendicular to each other [19]. This might be the reason for observing the largest angular Nernst effect in the CDW 0 state for angles below θ c and a zero Nernst effect for angles close to the plane of the layers (blue curve in Fig.…”

Section: Angular Hall and Nernst Effect Oscillationsmentioning

confidence: 98%

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Giant angular Nernst Effect in the Organic Metal α-(BEDT-TT)2KHg(SCN)4

Krstovska¹,

Choi²,

Steven³

2023

Preprint

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We have detected a large Nernst effect in the CDW state of the multiband organic metal α−(BEDT−TT)2KHg(SCN)4. We find that there exists a significant gradient of charge relaxation processes that can generate a sizeable contribution adding especially to the transverse thermoelectric signal. Apart from the phonon drag, the energy relaxation processes governing the electron-phonon interactions and the momentum relaxation processes governing the charge mobility of the q1D group of carriers have a significant role in observing the large Nernst signal in the CDW state. The emphasised momentum relaxation dynamics in the low field CDW state is a clear indicator of a significant carrier mobility that can lead to the largest Nernst signal in this state. The momentum relaxation is reduced with increasing angle and magnetic field, i.e., in the high field CDW state which is reflected in the smaller Nernst effect amplitude. In this case only the phonon drag and electron-phonon interactions are contributing to the transverse thermoelectric signal. Our findings advance and change the previous observations on the complex properties of this organic metal.

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Section: Temperature Dependence Of the Nernst Effectmentioning

confidence: 96%

Section: Angular Hall and Nernst Effect Oscillationsmentioning

confidence: 98%

Giant angular Nernst Effect in the Organic Metal α-(BEDT-TT)2KHg(SCN)4

Krstovska¹,

Choi²,

Steven³

2023

Preprint

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show abstract

“…Under certain orientations of the magnetic field, the mean value of the velocity v z may be small enough to cause a sharp increase of the current resistance which is repeated periodically as tan ϑ functions. Out of the period of these oscillations, an important information on the form of FS could be gained [20][21][22][23]. The inverse problem, i.e., calculation of the electron energy spectrum, is most effectively performed using experimental investigations of thermomagnetic effects in a strong magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Magnetobreakdown oscillations of Nernst-Ettingshausen field in layered conductors

Galbova¹

2016

Condens. Matter Phys.

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In the presented report, the Nernst-Ettingshausen effect in layered conductors is investigated. Considering a Fermi surface (FS) consisting of a slightly corrugated cylinder and two corrugated planes distributed periodically in the momentum space, the thermoelectric effects are considered under general assumptions for the value of a magnetic breakdown probability. As a result of an external generalized force, the FS sheets in layered conductors with a multisheet FS appear to be so close that the charge carriers (as a result of magnetic breakdown) can move from one FS sheet to another. In addition, the distribution functions of the charge carriers and the magnetic breakdown oscillations of thermoelectrical field along the normal to the layer, under different values and orientations of the magnetic field, B , are calculated. It is shown that if the magnetic field is deflected from the xz-plane at an angle ϕ, the oscillation part of a thermoelectrical field along the normal to the layer under condition sin ϕ tan ϑ 1 is mainly determined with the Nernst-Ettingshausen effect.

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Heat capacity of an electron gas at the surface of a nanotube with its superlattice in a magnetic field

Ermolaev¹,

Rashba²,

Solyanik³

2011

Low Temperature Physics

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The effect of modulating potential at the surface of a nanotube in a longitudinal magnetic field on heat capacity of a degenerate and nondegenerate electron gas is considered. The heat capacity is represented by monotonic and oscillating terms. Heat capacity of a degenerate electron gas exhibits de Haas-van Alphen type oscillations, dependent on density of electrons, and Aharonov-Bohm type oscillation dependent on the intensity of the magnetic field going through the nanotube cross section.

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Thermoelectric effect in layered conductors at low temperatures

Cited by 7 publications

References 4 publications

Giant angular Nernst Effect in the Organic Metal α-(BEDT-TT)2KHg(SCN)4

Giant angular Nernst Effect in the Organic Metal α-(BEDT-TT)2KHg(SCN)4

Magnetobreakdown oscillations of Nernst-Ettingshausen field in layered conductors

Heat capacity of an electron gas at the surface of a nanotube with its superlattice in a magnetic field

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