Abstract
We show a spin superconductor in ferromagnetic graphene as the counterpart to the charge superconductor in which a spin-polarized electron-hole pair plays the role of the spin 2(/2) "Cooper pair" with a neutral charge. We present a BCS-type theory for the spin superconductor. With the "London-type equations" of the super-spin-current density, we show the existence of an electric "Meissner effect" against a spatial varying electric field. We further study a spin superconductor/normal conductor/spin superconductor junction and predict a spin-current Josephson effect.
| Original language | English |
|---|---|
| Article number | 214501 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 84 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 2 Dec 2011 |
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Sun, Q. F., Jiang, Z. T., Yu, Y., & Xie, X. C. (2011). Spin superconductor in ferromagnetic graphene. Physical Review B - Condensed Matter and Materials Physics, 84(21), Article 214501. https://doi.org/10.1103/PhysRevB.84.214501