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Is the pi-particle responsible for the 41 meV peak in YBa_2Cu_3O_7? | Martin Greiter
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6 May 1997 | Journal: | Phys. Rev. Lett. 79, 4898 (1997) | Subject: | Superconductivity | cond-mat.supr-con | Affiliation: | Stanford University | Abstract: | It is argued that there is no low-energy resonance associated with the pi-operators introduced by Demler and Zhang. This implies that the Hubbard model does not possess an approximate SO(5) symmetry generated by these operators. Recent finite-size studies are re-interpreted accordingly. | Source: | arXiv, cond-mat/9705049 | Services: | Forum | Review | PDF | Favorites |
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