In
condensed matter physics, a Bogoliubov quasiparticle or Bogoliubon is a
quasiparticle that occurs in
superconductors.[1] Whereas superconductivity is characterized by the condensation of
Cooper pairs into the same ground quantum state, Bogoliubov quasiparticles are elementary excitations above the ground state, which are superpositions (linear combinations) of the excitations of negatively charged
electrons and positively charged
electron holes, and are therefore neutral
spin-½fermions.[2] These quasiparticles are named after
Nikolay Bogolyubov.
Sometimes these quasiparticles are also called Majorana modes, in analogy with the equations for
Majorana fermions.[3]