Magnetic extrema in electronic susceptibility and heat capacity of mesoscopic systems

Kuzmenko, N. K.; Mikhajlov, V. M.

doi:10.1016/s0375-9601(02)00185-8

Cited by 7 publications

(5 citation statements)

References 11 publications

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“…1). Numerous peaks in χ and C result from crossings of the Fermi level and an upper level nearest to it that gives at low temperatures a maximum in χ and simultaneously a minimum in C [13] as shown in the insert in Fig. 1.…”

Section: Results Of Calculationsmentioning

confidence: 96%

Three-dimensional oscillator in magnetic field: the de Haas–van Alphen effect in mesoscopic systems

Kuzmenko

Mikhajlov

2003

Physics Letters A

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The theoretical investigation of the cluster de Haas -van Alphen (dHvA) oscillations in three-dimensional systems performed for the first time. Applying a threedimensional oscillator model to systems with electron numbers 10 < N ≤ 10 5 we predict distinctive size effects: the dHvA oscillations can be observed only within a certain temperature range determined by N ; the lower size limit for N is ≈ 20; the amount of the dHvA oscillations is reduced with decreasing N which is accompanied by stretching the period of the oscillations.

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Section: Results Of Calculationsmentioning

confidence: 96%

Three-dimensional oscillator in magnetic field: the de Haas–van Alphen effect in mesoscopic systems

Kuzmenko

Mikhajlov

2003

Physics Letters A

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“…This result is found in qualitative agreement with those obtained in the calculations of the canonical gap of in Refs. [20,32] various T . For T /T c 0.2, the pairing gap undergoes a backbending, which will be discussed under Sec.…”

Section: B Results Within the Doubly-folded Multilevel Equidistant Mmentioning

confidence: 99%

“…(2), the rotational part ν = i exp(βγ M ν,i ) of the partition function Z(β, γ ) is calculated following Ref. [32]. The resulting canonical average value M(β, γ ) C = βZ(β, γ ) −1 ∂Z(β, γ )/∂γ of angular momentum, therefore, varies with T .…”

Section: Discussionmentioning

confidence: 99%

Pairing in hot rotating nuclei

Hưng

Dang

2008

Phys. Rev. C

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Nuclear pairing properties are studied within an approach that includes the quasiparticle-number fluctuation (QNF) and coupling to the quasiparticle-pair vibrations at finite temperature and angular momentum. The formalism is developed to describe non-collective rotations about the symmetry axis. The numerical calculations are performed within a doubly-folded equidistant multilevel model as well as several realistic nuclei. The results obtained for the pairing gap, total energy and heat capacity show that the QNF smoothes out the sharp SN phase transition and leads to the appearance of a thermally assisted pairing gap in rotating nuclei at finite temperature. The corrections due to the dynamic coupling to SCQRPA vibrations and particle-number projection are analyzed. The effect of backbending of the momentum of inertia as a function of squared angular velocity is also discussed.Comment: 30 pages and 9 figures. Accepted in Phys. Rev.

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“…In Ref. [26] we showed that similar oscillations in C (and in the magnetic susceptibility) are stimulated by the increasing magnetic field H i.e. in that case the role of α was performed by H.…”

Section: Shape Resonances In the Fermion Heat Capacitymentioning

confidence: 80%