4 papers
cond-mat.supr-con2003
Umklapp scattering and electron pairing cutoff in BCS superconductors
X. H. Zheng, D. G. Walmsley
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, , low com…
cond-mat.supr-con2002
CVD-based approach to the growth of epitaxial MgB2 thin films
A. V. Pogrebnyakov, X. H. Zheng, A. Kotcharov +12
The paper has been withdrawn
cond-mat.supr-con2001
BCS Theory for Binary Systems with 2D Electrons
X. H. Zheng
MgB_2 is considered as a binary system with 2D electrons. The classic BCS theory is applied to this system. The transition temperature is found to be relatively high, because 2D el…
cond-mat.supr-con2000
Cooper Pairs in Alternating Layers of Light and Heavy Atoms
X. H. Zheng
The Hamiltonian and trial function in the BCS theory are improved to test the limit of this theory. The Cooper pairs arise from standing electron waves, ready to move with atoms, g…