Sökning: "Eliashberg"

Hittade 3 uppsatser innehållade ordet Eliashberg.

1. 1. On the superconducting critical temperature in Eliashberg theory

   Master-uppsats, KTH/Fysik

   Författare :Max Oliveberg; [2021]
   Nyckelord :Eliashberg; Superconductivity; Mathematical Physics; Eliashberg; Supraledning; Matematisk Fysik;

   Sammanfattning : This thesis presents a brief synopsis of the derivations of the BCS and Eliashberg equations. An analytic formula for the critical temperature $T_c$ in Eliashberg theory is derived, which contains a sum of iterative integral corrections. LÄS MER

3. 2. A Space-Time Study of the Electron-Electron Interaction in High-TC Parent Compound La2CuO4: In Search of an Attractive Effective Interaction

   Master-uppsats, Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

   Författare :Tor Sjöstrand; [2016]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : The superconductivity under doping in the famous cuprate compounds is believed to originate in the CuO2 planes. The mediator of pairing is generally accepted to be induced from electronic degrees of freedom. LÄS MER

4. 3. Efficient Computational Procedure for the Analytic Continuation of Eliashberg Equations

   Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper

   Författare :Joakim Johansson; Fredrik Lauren; [2014]
   Nyckelord :superconductivity; analytic continuation; BCS theory;

   Sammanfattning : The superconducting order parameter and the mass renormalization function can be solved either at discrete frequencies along the imaginary axis, or as a function of continuous real frequencies. The latter is done with a method called analytic continuation. LÄS MER