On a mechanism of high-temperature superconductivity: Spin-electron acoustic wave as a mechanism for the Cooper pair formation

Andreev, Pavel A.; Polyakov, P. A.; Kuz'menkov, L. S.

doi:10.48550/arxiv.1507.03295

Cited by 6 publications

(9 citation statements)

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“…The described phenomena, in some form, exist in spinless plasmas, while there are some plasma effects requiring the spin of particles. On this path the following purely spin plasma phenomena have been found: the spin-plasma waves [3], [16], [17], [18], [19], [20], [21], [22], the spin-electron acoustic waves [23], [24], which are possibly related to the high-temperature superconductivity [25], the spin-electron acoustic soliton [26], the spin (quantum) vorticity [22], [27], [28], the spin caused modulational instability of the magnetosonic waves in the dense quantum plasma [29], spin instabilities caused by specific equilibrium distribution functions [30], instability of the plasma and spin-plasma waves at the propagation of the spin polarized neutron beam through the magnetized spin-1/2 plasmas arising due to the spin-spin and spin-current interactions Ref. [19], [31].…”

Section: Introductionmentioning

confidence: 99%

On the equation of state for the “thermal” part of the spin current: The Pauli principle contribution in the spin wave spectrum in a cold fermion system

Andreev¹,

Kuz'menkov²

2019

Progress of Theoretical and Experimental Physics

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Spin evolution opened a large field in quantum plasma research. The spin waves in plasmas were considered among new phenomena considered in spin-1/2 quantum plasmas. The spin density evolution equation found by means of the many-particle quantum hydrodynamics shows existence of the "thermal" part of the spin current, which is an analog of the thermal pressure, or the Fermi pressure for degenerate electron gas, existing in the Euler equation. However, this term has been dropped, since there has not been found any equation of state for the thermal part of the spin current (TPSC), like we have for the pressure. In this paper we derive the equation of state for the TPSC and apply it for study of spectrum of collective excitations in spin-1/2 quantum plasmas. We focus our research on the spectrum of spin waves, since this spectrum is affected by the thermal part of the spin current. We consider two kinds of plasmas: electron-ion plasma with motionless ions and degenerate electrons, and degenerate electron-positron plasmas. We also present the non-linear Pauli equation with the spinor pressure term containing described effects. The thermal part of the flux of spin current existing in the spin current evolution equation is also derived. We also consider the contribution of the TPSC in the grand generalized vorticity evolution.

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Section: Introductionmentioning

confidence: 99%

On the equation of state for the “thermal” part of the spin current: The Pauli principle contribution in the spin wave spectrum in a cold fermion system

Andreev¹,

Kuz'menkov²

2019

Progress of Theoretical and Experimental Physics

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“…It was shown that in the regime of small polarization the hybridization occurred between the surface Langmuir wave and the surface SEAW. Another important application of the SSE-QHD method is the electron-spelnon (spelnon is the quanta of SEAW) interaction which is responsible for the Cooper pair formation giving a mechanism for the high-temperature superconductivity [35]. The SSE-QHD method is further generalized by including exchange interaction effects [30].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear separate spin evolution in degenerate electron-positron-ion plasmas

Iqbal

Andreev

2016

Physics of Plasmas

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The non-linear evolution of spin-electron acoustic, positron-acoustic, and spin-electron-positron acoustic waves is considered. It is demonstrated that weakly nonlinear dynamics of each wave leads to the soliton formation. Altogether, we report on existence of three different solitons. The spin-electron acoustic soliton known for electron-ion plasmas is described for electron-positron-ion plasmas for the first time. The existence of the spin-electron-positron acoustic soliton is reported for the first time. The positron-acoustic soliton and the spin-electron-positron acoustic soliton arise as the areas of a positive electric potential. The spin-electron acoustic soliton behaves as the area of a negative electric potential at the relatively small positron imbalance n0p/n0e = 0.1 and as the area of a positive electric potential at the relatively large positron imbalance n0p/n0e = 0.5.

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“…[12]. It was shown that the electron-spelnon interaction leads to the Cooper pair formation ensuring a mechanism for the high-temperature superconductivity [13]. Experimental analysis of surface spin waves and spin waves in thin films is a subject of current research (see for instance [14]) leading to a possibility of the experimental analysis of the SEAWs.…”

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confidence: 99%

Surface spin-electron acoustic waves in magnetically ordered metals

Andreev

Kuz'menkov

2016

Applied Physics Letters

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Degenerate plasmas with motionless ions show existence of three surface waves: the Langmuir wave, the electromagnetic wave, and the zeroth sound. Applying the separated spin evolution quantum hydrodynamics to half-space plasma we demonstrate the existence of the surface spin-electron acoustic wave (SSEAW). We study dispersion of the SSEAW. We show that there is hybridization between the surface Langmuir wave and the SSEAW at rather small spin polarization. In the hybridization area the dispersion branches are located close to each other. In this area there is a strong interaction between these waves leading to the energy exchange. Consequently, generating the Langmuir waves with the frequencies close to hybridization area we can generate the SSEAWs. Thus, we report a method of creation of the SEAWs.

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On a mechanism of high-temperature superconductivity: Spin-electron acoustic wave as a mechanism for the Cooper pair formation

Cited by 6 publications

References 0 publications

On the equation of state for the “thermal” part of the spin current: The Pauli principle contribution in the spin wave spectrum in a cold fermion system

On the equation of state for the “thermal” part of the spin current: The Pauli principle contribution in the spin wave spectrum in a cold fermion system

Nonlinear separate spin evolution in degenerate electron-positron-ion plasmas

Surface spin-electron acoustic waves in magnetically ordered metals

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