Physics:Electron quadruplets

Short description: State of matter

Electron quadruplets are a possible phenomenon in an exotic state of matter in which Cooper pairs do not exhibit long-range order, but electron quadruplets do. This "quartic metal" phase is related to but distinct from those superconductors explained by the standard BCS theory; rather than expelling magnetic field lines as in the Meissner effect, it generates them, a spontaneous Nernst effect that indicates the breaking of time-reversal symmetry.<ref name=":0">{{Cite journal|last1=Grinenko|first1=Vadim|last2=Weston|first2=Daniel|last3=Caglieris|first3=Federico|last4=Wuttke|first4=Christoph|last5=Hess|first5=Christian|last6=Gottschall|first6=Tino|last7=Maccari|first7=Ilaria|last8=Gorbunov|first8=Denis|last9=Zherlitsyn|first9=Sergei|last10=Wosnitza|first10=Jochen|last11=Rydh|first11=Andreas|last12=Kihou |first12=Kunihiro |last13=Lee |first13=Chul-Ho |last14=Sarkar |first14=Rajib |last15=Dengre |first15=Shanu |last16=Garaud |first16=Julien |last17=Charnukha |first17=Aliaksei |last18=Hühne |first18=Ruben |last19=Nielsch |first19=Kornelius |last20=Büchner |first20=Bernd |last21=Klauss |first21=Hans-Henning

See also

• List of states of matter