In short,BCS theory proposes that superconductivity arises when electrons pair and condense in a quantum state with macroscopic phase coherence. Let's see what this means…SUPERCONDUCTIVITY BEGINS WITHH:both properly understood, and misunderstood: Superconductivity basics rethoughtJorge E. Hirsch...
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We show how from our self-consistent equations the BCS theory and the theory of a superfluid Bose gas can be recovered in the weak and strong coupling limit, respectively. In the strong coupling limit we find that there is a repulsive interaction between the composite bosons due to the Pauli...
The BCS pairing theory and the new high Toxide superconductors The recent discoveries of the various high-temperature oxide superconductors have given rise to many questions regarding the actual mechanism for the BCS p... SS Jha - World Scientific, Singapore...
A variational theory of the BCS pair-condensed state of strongly interacting Fermi systems is presented. The short-ranged correlations among the particles are described by a correlation operator which induces state-independent correlations of the Jastrow type. The two-body distribution function and the...
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BCS theory and its developmentResponse to electromagnetic fieldsWe consider the current correlation function for a three-dimensional system of fermions embedded in a homogeneous background and mutually interacting via an attractive short-range potential, below the (superconducting) critical temperature. ...
The theory recovers the BCS mean field approximation at zero temperature and the ... L He,P Zhuang - 《Physical Review D》 被引量: 35发表: 2007年 Projected BCS Tamm〥ancoff method for molecular electronic structures A new Tamm–Dancoff method for the ground and excited states of molecular...
We consider a Fermi gas with a short range s-wave interaction U(k, k′) = U < 0, which exists only between opposite spins. Our theory can be effectively represented by a T-matrix approximation, shown diagrammatically in Fig. 1. However, we emphasize that Fig....
In the non selfconsistent formulation of the theory the system always shows an instability towards Bose condensation of pairs into an infinite lifetime two-particle bound state. If the calculations are performed selfconsistently pair-pair scattering is included which causes the pairs to have finite ...