how can I understand spin fluctuation in iron based superconductors?
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In study of iron based superconductors, one of the starting point is that electrons are weakly interacting(or weakly correlated) such that we can still apply many body perturbation theory(so called weak coupling scenario by A.Chubukov, for instance). According to them, nesting give rises to SDW(itinerant) and superconductivity appears by doping from SDW. More importantly, superconducting interaction between cooper pair is mediated by so called "spin fluctuation", the collective bosonic degrees of freedom. Can anyone give more clear and simple picture for spin fluctuation?
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In study of iron based superconductors, one of the starting point is that electrons are weakly interacting(or weakly correlated) such that we can still apply many body perturbation theory(so called weak coupling scenario by A.Chubukov, for instance).
According to them, nesting give rises to SDW(itinerant) and superconductivity appears by doping from SDW.
More importantly, superconducting interaction between cooper pair is mediated by so called "spin fluctuation", the collective bosonic degrees of freedom.
✔✔✔
________________
HOLE IT'LL HELP YOU ☺☺☺☺☺
HERE'S THE ANSWER ✌
_______________
⬇⬇⬇
In study of iron based superconductors, one of the starting point is that electrons are weakly interacting(or weakly correlated) such that we can still apply many body perturbation theory(so called weak coupling scenario by A.Chubukov, for instance).
According to them, nesting give rises to SDW(itinerant) and superconductivity appears by doping from SDW.
More importantly, superconducting interaction between cooper pair is mediated by so called "spin fluctuation", the collective bosonic degrees of freedom.
✔✔✔
________________
HOLE IT'LL HELP YOU ☺☺☺☺☺
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