D-WAVE AND S-WAVE SUPERCONDUCTIVITY IN 2 COUPLED HUBBARD PLANES AND COMPARISON WITH NEUTRON-SCATTERING IN YBA2CU3O7

Dahm T, TEWORDT L (1995)
Physica C Superconductivity 253(3-4): 334-338.

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Abstract
The general equations determining the quasiparticle, spin, and charge excitations of two coupled Hubbard planes are derived within the inverted perpendicular matrix or fluctuation-exchange approximation, For equal intralayer and interlayer Coulomb repulsions we obtain s(+/-) wave superconducting gaps with opposite signs in the two bands, The magnitude of this gap is highly anisotropic but is far away from exhibiting a zero. The resulting spin susceptibility develops a spin gap and a commensurate peak at higher frequency as T decreases below T-c. This is quite similar to the results for the d(x2-y2) wave gap and agrees qualitatively with neutron scattering on YBa2Cu3O7 below T-c.
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Dahm T, TEWORDT L. D-WAVE AND S-WAVE SUPERCONDUCTIVITY IN 2 COUPLED HUBBARD PLANES AND COMPARISON WITH NEUTRON-SCATTERING IN YBA2CU3O7. Physica C Superconductivity. 1995;253(3-4):334-338.
Dahm, T., & TEWORDT, L. (1995). D-WAVE AND S-WAVE SUPERCONDUCTIVITY IN 2 COUPLED HUBBARD PLANES AND COMPARISON WITH NEUTRON-SCATTERING IN YBA2CU3O7. Physica C Superconductivity, 253(3-4), 334-338.
Dahm, T., and TEWORDT, L. (1995). D-WAVE AND S-WAVE SUPERCONDUCTIVITY IN 2 COUPLED HUBBARD PLANES AND COMPARISON WITH NEUTRON-SCATTERING IN YBA2CU3O7. Physica C Superconductivity 253, 334-338.
Dahm, T., & TEWORDT, L., 1995. D-WAVE AND S-WAVE SUPERCONDUCTIVITY IN 2 COUPLED HUBBARD PLANES AND COMPARISON WITH NEUTRON-SCATTERING IN YBA2CU3O7. Physica C Superconductivity, 253(3-4), p 334-338.
T. Dahm and L. TEWORDT, “D-WAVE AND S-WAVE SUPERCONDUCTIVITY IN 2 COUPLED HUBBARD PLANES AND COMPARISON WITH NEUTRON-SCATTERING IN YBA2CU3O7”, Physica C Superconductivity, vol. 253, 1995, pp. 334-338.
Dahm, T., TEWORDT, L.: D-WAVE AND S-WAVE SUPERCONDUCTIVITY IN 2 COUPLED HUBBARD PLANES AND COMPARISON WITH NEUTRON-SCATTERING IN YBA2CU3O7. Physica C Superconductivity. 253, 334-338 (1995).
Dahm, Thomas, and TEWORDT, L. “D-WAVE AND S-WAVE SUPERCONDUCTIVITY IN 2 COUPLED HUBBARD PLANES AND COMPARISON WITH NEUTRON-SCATTERING IN YBA2CU3O7”. Physica C Superconductivity 253.3-4 (1995): 334-338.
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