Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Dai, Xianxi"'
A theoretical model calculation of measurement of anisotropic resistivity for high Tc superconductor
Publikováno v:
In Physica C: Superconductivity and its applications 2000 334(1):44-54
Autor:
Dai Xianxi, Hu Guang-Xi
Publikováno v:
Chinese Physics Letters. 21:1201-1204
The functional integral approach (FIA) is introduced to study the transition temperature of an imperfect Bose gas in traps. An interacting model in quantum statistical mechanics is presented. With the model we study a Bose gas with attractive interac
Publikováno v:
Communications in Theoretical Physics. 33:697-700
The divergence problem in momentum representation of some singular potentials in Schrodinger equation is discussed. A set of exact solutions for a singular integral equation and the criteria determining the solutions in momentum space are obtained. T
Publikováno v:
International Journal of Modern Physics B. 13:3499-3504
A new possible mechanism is suggested based on the Wigner crystal and Bose–Einstein condensation. Our previous studies on the singular states that Loudon's singular ground state is rejected by the orthogonality criteria. It is shown that 2D Wigner
Publikováno v:
Physics Letters A. 264:68-73
In this Letter, a phonon spectrum of YBCO is obtained from its experimental specific heat data by an exact inversion formula with eliminating divergence parameter [Dai Xianxi, Xu Xinwen and Dai Jiqiong, Proceedings of Beijing International Conference
Autor:
Yong-li Ma, Dai Xianxi
Publikováno v:
Physics Letters A. 256:411-416
A phenomenological calculation of commensurate enhancement of critical current density J c with periodic columnar pins in a magnetic field parallel is presented. The strongly pinned vortex lattice through columnar defects can carry the greatly enhanc
Publikováno v:
Physical Review A. 55:2617-2624
Autor:
Pei-Herng Hor, Dai Xianxi
Publikováno v:
Physica C: Superconductivity. 219:281-287
Recently, the classification of high- T c superconductors (HTS) and the number of stages of intercalation have become of interest to scientists. The stage number is closely related to the layer force range. In this paper we discuss the layer force ra
Publikováno v:
Chinese Physics Letters. 9:151-154
With the use of coherent-state method, a quantum approach for the intrinsic phonon localized modes in an anharmonic monoatomic chain is given. It is shown that the envelope soliton with zero group velocity can exist in the lattice and that the freque
Autor:
Dai Xianxi
Publikováno v:
Journal of Physics: Condensed Matter. 4:1339-1357
For pt.I see ibid., vol.3, p.4389, 1991. In this paper the causes of the 'mathematical breakdown' of the random-phase approximation RPA' are analysed. Starting from an exact matrix formula, a diagram analysis of a functional-integral approach is deve