The ground state of an antiferromagnetic superconductor in the presence of a homogeneous magnetic field |
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Authors: | Y. Suzumura A.D.S. Nagi |
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Affiliation: | Physics Department, University of Waterloo, Waterloo, Ontario, Canada |
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Abstract: | The effect of a homogeneous magnetic field, H0. on the ground state of an antiferromagnetic superconductor has been investigated. Assuming a one-dimensional like half-filled band, we have found a new state having gapless superconductivity and H0-dependent order parameter. This state exists for HQ/Δ0>0.22 and when ∣Δ ? HQ∣?H0 < Δ + HQ (HQ is the staggered magnetic field, Δ is the superconducting order parameter and Δ0 is Δ in the absence of HQ and H0). |
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