Heavy-fermion superconductors

Alekseevskiǐ, N. E.; Khomskiî, D. I.

doi:10.3367/ufnr.0147.198512d.0767

Cited by 16 publications

(4 citation statements)

References 2 publications

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“…The employment of this mechanism to explain the effect of "heavy" fermions [6] appears to be quite promising. In this approach the mechanism leading to an increased weight and the nature of bisoliton superconductivity [7] are the consequence of electronphonon interaction and are described by the same set of equations, though under different additional conditions.…”

Section: Resultsmentioning

confidence: 99%

Self‐consistent states of a flow of quasi‐particles and immobile deformation in one‐dimensional systems

Ermakov

Ponezha

Tkach

1991

Physica Status Solidi (b)

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New solutions are obtained of a set of two-component nonlinear equations that correspond to a self-consistent state of moving quasi-particles and immovable deformation. The deformation is a periodic structure that consists of potential wells. It is shown that in the case considered the effective mass of carriers is determined by the probability of tunneling and may rise appreciably.Neue Losungen werden fur einen Satz von zweikomponentigen nichtlinearen Gleichungen erhalten, die einem selbstkonsistenten Zustand sich bewegender Quasiteilchen und unbeweglicher Deformation entsprechen. Die Deformation ist eine periodische Struktur, die aus Potentialwanden besteht. Es wird gezeigt, daB im betrachteten Fall die effektive Masse der Trager durch die Tunnelwahrscheinlichkeit bestimmt ist und betrachtlich ansteigen kann.

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Section: Resultsmentioning

confidence: 99%

Self‐consistent states of a flow of quasi‐particles and immobile deformation in one‐dimensional systems

Ermakov

Ponezha

Tkach

1991

Physica Status Solidi (b)

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“…As a result the total Hamiltonian in analogous t o that of the asymmetric periodical Anderson model [24] and i t has been given a thorough study in the theory of heavy-fermion systems [25].…”

Section: Single-ion Eigenstates and Hamiltonian Of High-tcmentioning

confidence: 99%

On a Theory of the Electronic Spectrum and Magnetic Properties of High‐T_c Superconductors

Gaididei

Локтев

1988

Physica Status Solidi (b)

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An attempt is made to derive consistently the Hamiltonian of electron excitations of high-TC superconductors (HTSC) proceeding from their ionic and crystal structure. The carriers are shown t o be able to move both, over the copper and oxygen subsystems. The spectrum of free (excess) carriers is found. It is established that the Jahn-Teller (two-level) character of Cu*+ results in a specific pairing mechanism being the most effective in rhombically distorted lattices. The analogy between HTSC and Kondo lattices (or in some sense heavy-fermion systems )is traced and the possible reason of suppressing magnetism and breaking the magnetic order in HTSC is discussed.Es wird versucht, ails ihrer Ionen-und Kristallstruktur den Hamiltonian der Elektronenanregungen von Hoch-Tc-Supraleitern (HTSC) konsistent abzuleiten. Es wird gezeigt, daR die Triiger fahig sind, sich sowohl iiber das Kupfer-als auch das Sauerstoffsubsystem zu bewegen. Das Spektrum der freien (uberschuB-)Ladnngstriiger wird gefunden. Es wird festgestellt, dal3 der Jahn-Teller-(Zwei-Niveau-)Charakter des Cu2+ zu einem spezifischen Paarbildungsmechanismus fuhrt, der in rhombisch gestorten Gittern der effektivste ist. Die Analogie zwischen HTSC und Kondo-Gittern (oder im gewissen Sinne Schwer-Fermionensystemen) wird hergestellt und mogliche Griinde der Unterdriickung des Magnetismus und des Zusammenbruchs der magnetischen Ordnung in HTSC werden diskutiert.

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“…Известно, что сильные электронные корреляции в существенной степени определяют свойства слабо легированных оксидов меди [1], [2] и тяжелофермионных (ТФ) интерметаллидов [3]- [6]. В этих материалах реализуется нефононный механизм СОСУЩЕСТВОВАНИЕ СВЕРХПРОВОДИМОСТИ И АНТИФЕРРОМАГНЕТИЗМА 485 сверхпроводящего спаривания [1], [7]- [9], и куперовская неустойчивость развивается либо на фоне разрушенного антиферромагнитного упорядочения при сохранении ближних антиферромагнитных корреляций, либо при наличии дальнего антиферромагнитного порядка, но с существенно уменьшенным значением намагниченности подрешетки.…”

Section: Introductionunclassified

Сосуществование Сверхпроводимости И Антиферромагнетизма В Тяжелофермионных Интерметаллидах

Вальков¹,

Zlotnikov²

2013

ТМФ

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Heavy-fermion superconductors

Cited by 16 publications

References 2 publications

Self‐consistent states of a flow of quasi‐particles and immobile deformation in one‐dimensional systems

Self‐consistent states of a flow of quasi‐particles and immobile deformation in one‐dimensional systems

On a Theory of the Electronic Spectrum and Magnetic Properties of High‐T_c Superconductors

Сосуществование Сверхпроводимости И Антиферромагнетизма В Тяжелофермионных Интерметаллидах

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Heavy-fermion superconductors

Cited by 16 publications

References 2 publications

Self‐consistent states of a flow of quasi‐particles and immobile deformation in one‐dimensional systems

Self‐consistent states of a flow of quasi‐particles and immobile deformation in one‐dimensional systems

On a Theory of the Electronic Spectrum and Magnetic Properties of High‐Tc Superconductors

Сосуществование Сверхпроводимости И Антиферромагнетизма В Тяжелофермионных Интерметаллидах

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On a Theory of the Electronic Spectrum and Magnetic Properties of High‐T_c Superconductors