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- W2043360219 abstract "We argue that circular currents generation by small bipolarons embedded in the antiferromagnetic background is the origin of the Fermi arc in cuprates. When the small polarons become cores of merons or antimerons (vortices in the spin configuration with winding numbers +1 and −1, respectively) a circular spin current is generated by a spin Berry phase arising from the spiral spin textures of merons and antimerons. In this situation, the electric current is zero due to the exact cancellation of currents carried by up- and down-spin electrons. This cancellation is upset when side-by-side bipolaronic cores of merons and antimerons are formed and spontaneous circular currents around the bipolarons are generated. The comparison of the ARPES spectrum for such a state and the experimentally obtained one suggests the presence of an extended circular current region around bipolarons in the pseudo gap phase of the cuprates." @default.
- W2043360219 created "2016-06-24" @default.
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- W2043360219 date "2007-09-01" @default.
- W2043360219 modified "2023-09-27" @default.
- W2043360219 title "The origin of the Fermi arc in cuprates" @default.
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- W2043360219 doi "https://doi.org/10.1016/j.physc.2007.03.268" @default.
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