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#### Crossover from d-wave to p-wave pairing in the t-t' Hubbard model at zero temperature

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##### Citation

Arita, R., & Held, K. (2006). Crossover from d-wave to p-wave pairing in the t-t'
Hubbard model at zero temperature.* Physical Review B,* *73*(6):
064515.

Cite as: https://hdl.handle.net/21.11116/0000-000F-0311-A

##### Abstract

We develop an algorithm which employs the projective quantum Monte

Carlo method for solving the equations of the dynamical cluster

approximation at zero temperature, and apply it for studying pair

susceptibilities of the two-dimensional Hubbard-model with next-nearest

neighbor hopping. In particular, we identify which pairing symmetry is

dominant in the U-n parameter space (U: repulsive Coulomb interaction;

n: electron density). We find that p(x+y)(-)(d(x)(2)-y(2-)) wave is

dominant among triplet (singlet) pairings-at least for 0.3 < n < 0.8

and U <= 4t. The crossover between d(x)(2)-y(2-) wave and p(x+y)(-)

wave occurs around n similar to 0.4.

Carlo method for solving the equations of the dynamical cluster

approximation at zero temperature, and apply it for studying pair

susceptibilities of the two-dimensional Hubbard-model with next-nearest

neighbor hopping. In particular, we identify which pairing symmetry is

dominant in the U-n parameter space (U: repulsive Coulomb interaction;

n: electron density). We find that p(x+y)(-)(d(x)(2)-y(2-)) wave is

dominant among triplet (singlet) pairings-at least for 0.3 < n < 0.8

and U <= 4t. The crossover between d(x)(2)-y(2-) wave and p(x+y)(-)

wave occurs around n similar to 0.4.