Superconductivity through Quantum Critical Fluctuations in the ...
Superconductivity through Quantum Critical Fluctuations in the ...
Superconductivity through Quantum Critical Fluctuations in the ...
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Pair<strong>in</strong>g VertexScatter<strong>in</strong>g <strong>through</strong> π/2 favoredk’-k’ik k ik k: g 2 (k ⇥ k 0 ) 2 hLLi(k, k 0 ,!)k-kProject to different angular momentum channels|k × k ′ | 2 =1/2(k 2 x + k 2 y)(k → k ′ ) − 1/2(k 2 x − k 2 y)(k → k ′ ) − 1/2(2k x k y )(k → k ′ ).Repulsive <strong>in</strong> s-wave channel, equally attractive <strong>in</strong>d(x 2 y 2 ) and d(xy) channels.
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