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pro vyhledávání: '"Zheng, X. H."'
Autor:
Zheng, X H, Zheng, J X
The Wheeler equation has an extension in the Kerr background. It has an exact solution representing a running harmonic wave in the tortoise coordinate. The wave models astrophysical jets in a new light because it collimates along the axis of spacetim
Externí odkaz:
http://arxiv.org/abs/2207.08088
Autor:
Zheng, X H, Zheng, J X
Publikováno v:
Physical Review D 102 (2020) 104049
The Wheeler equation, for electromagnetic disturbances in a gravitational field, was found by Fiziev to have exact solutions both above and below the event horizon, in the form of waves propagating both inwardly and outwardly. This observation can be
Externí odkaz:
http://arxiv.org/abs/2011.12175
Akademický článek
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Autor:
Zheng, X. H., Zheng, J. X.
With the help of the McMillan formula and virtual crystal model, we predict $T_c$ may exceed 34 K in a beryllium-based alloy with a specific composition, reminiscent of $T_c$ = 35 K in the first cuprate superconductor. This may similarly inspire rese
Externí odkaz:
http://arxiv.org/abs/1907.07597
With a generic model for the electron-phonon spectral density, two simple expressions are derived to estimate the transition temperature and gap-to-temperature ratio in conventional superconductors. They entail that on average the numerical value of
Externí odkaz:
http://arxiv.org/abs/1905.01367
Akademický článek
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Publikováno v:
J. Phys. Chem. C, 2010, 114 (51), pp 22636-22643
The understanding of the kinetic properties of hydrogen (isotopes) adatoms on graphene is important in many fields. The kinetic properties of hydrogen-isotope (H, D and T) monomers were simulated using a composite method consisting of density functio
Externí odkaz:
http://arxiv.org/abs/1007.1109
Autor:
Zheng, X. H., Walmsley, D. G.
The BCS theory of superconductivity is extended to recognize pairing of electrons by both normal and umklapp scattering. Application of the variational approach shows that coexistence of normal and umklapp scattering frustrates superconductivity.
Externí odkaz:
http://arxiv.org/abs/cond-mat/0410638
Autor:
Zheng, X. H., Walmsley, D. G.
In a superconductor electrons form pairs for which the end states of normal and umklapp scattering may overlap. This cuts electron pairing off at a phonon frequency, $\omega_c$, low compared with the Debye frequency, $\omega_D$. Using this insight, c
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308350
Autor:
Pogrebnyakov, A. V., Zheng, X. H., Kotcharov, A., Jones, J. E., Xi, X. X., Lysczek, E. M., Redwing, J., Xu, S. Y., Li, Q., Lettiery, J., Schlom, D. G., Schallenberger, J., Liu, Z. K., Tian, W., Pan, X. Q.
The paper has been withdrawn
Comment: 14 pages, 5 figures
Comment: 14 pages, 5 figures
Externí odkaz:
http://arxiv.org/abs/cond-mat/0204158