Recent content by Foyevtsov

  1. F

    BCS Theory & Cooper Pairs in Cuprate Superconductors

    Absolutely. Magnetic excitation DOS says that magnetic nature is responsible fo pairing. Who knows? Yesterday, I saw a few presentations and posters concernig exsaxtly the same questions. A few of them say "yes" to phonons (APRES) and other few say "yes" to magnetic nature. All this results are...
  2. F

    BCS Theory & Cooper Pairs in Cuprate Superconductors

    Don't worry about the word "belief". I've read that paper. Well, they said "most likely", means that they cannot prove (disprove) it. It sounds the same as "magnetic glue" or "spin density wave" stories, isn't it?. I am not very confident with these kind of materials, but thank you for this...
  3. F

    Exploring Reciprocal Space in Crystallography

    That is exactly what I am doing. Is the reciprocal space (actually k-space) which comes from the free electron gas model (almost in the beginning of Ashkroft&Mermin) the same as reciprocal space from diffraction of x-ray (or newtrons, doesn't matter), namely from Laue equations? It is a bit...
  4. F

    BCS Theory & Cooper Pairs in Cuprate Superconductors

    Please, do not tell that you really believe that in cuprates phohons can be responsible for the pairing. Concerning pairing (as far as I remember) Cooper (before BSC) proposed that it can be some glue and after they three together create elegant theory which hold inside this phonon-caused...
  5. F

    BCS Theory & Cooper Pairs in Cuprate Superconductors

    Agree, but for now it was only one glue was found: phonon-glue. Spin fluctuation is a theory so far (with some possible scenarios). BSC perfectly explains low temperature SC with phonons but it definitely cannot be a phonons at high temperatures (because of interactions will be too strong for...
  6. F

    BCS Theory & Cooper Pairs in Cuprate Superconductors

    BCS says that if material has magnetic ion impurities (even very small amount) than this would destroy superconductive state (because of the interactions between Cooper pairs and unfinished atoms shell). Since the energy of coupling is much less than 1 eV pairs would be uncoupled by magnetism...
  7. F

    Exploring Reciprocal Space in Crystallography

    OK, I'll try. I am not a mathematician, but physicist. So, probably some mathematical views are not so close to my view. Why the reciprocal space is so convenient for describing of x-ray diffraction from physicist point of view? (Let say here...
  8. F

    Exploring Reciprocal Space in Crystallography

    Hello all, I don't understand some things concerning reciprocal space. I know how it appears from quantum mechanics (it comes from gas of free electrons model, then applying Fermi-statistics for it and solve Heisenberg equation and get some kx,y,z which have to be integer. After that we call the...
Back
Top