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Hole pairing symmetry in attractive Hubbard model

✍ Scribed by C. Wang; O. Navarro; R. Oviedo-Roa; L.A. Pérez


Book ID
108466126
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
165 KB
Volume
282-287
Category
Article
ISSN
0921-4534

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New skyrmions in the attractive Hubbard
✍ W.Vincent Liu 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 66 KB

The coexistence of superconducting and charge-density-wave order in the half-filled attractive Hubbard model is Ž . Ž . interpreted as a consequence of the pseudospin SU 2 symmetry spontaneously broken to a 'hidden' subgroup U 1 . By topological arguments we show that there must exist new skyrmion t