Indications of unconventional superconductivity in doped and undoped triangular antiferromagnets
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Contributors
Abstract
The possibility of superconductivity in doped and undoped triangular antiferromagnets is discussed. Using the Bethe-Salpeter (BS) equation, it is shown that the exchange of random-phase approximation paramagnons on a triangular lattice Hubbard model leads to strong pairing correlations at and near half filling. The dominant states for this system correspond to d-wave singlet (even-frequency) and s-wave triplet (odd-frequency) pairing. Analytical techniques applied to the hole-doped (Formula presented) model yield similar results. A (Formula presented) Hubbard model interpolating between square (Formula presented) and triangular (Formula presented) lattices has a tendency to only d-wave singlet pairing for (Formula presented) Experimental consequences for organic compounds (Formula presented) are discussed.
Details
Original language | English |
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Pages (from-to) | R713-R716 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 59 |
Issue number | 2 |
Publication status | Published - 1999 |
Peer-reviewed | Yes |
Externally published | Yes |