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Null orbital frustration at the pseudogap boundary in a layered cuprate superconductor | L Krusin-Elbaum
; T Shibauchi
; C H Mielke
; | Date: |
5 Mar 2004 | Journal: | Phys Rev Lett, 92 (9), 097005 | Abstract: | We assess the relative importance of orbital frustration at the pseudogap closing field H(pg). Using interlayer tunneling transport in pulsed magnetic fields nearly up to 60 T, we track the field-temperature (H-T) phase diagram for fields parallel ( parallel ab) and normal ( parallel c) to the layered structure of Bi(2)Sr(2)CaCu(2)O(8+y). In contrast to large orientational anisotropy of the superconducting state related to the orbital motion of Cooper pairs, we find anisotropy of H(pg) temperature independent and small, due solely to the g factor. The obtained Zeeman relation with the pseudogap temperature T small star, filled, g( parallel c)micro(B)H( parallel c)(pg)=g( parallel ab)micro(B)H( parallel ab)(pg) approximately k(B)T small star, filled, is fully consistent with the correlations only in the spin channel. | Source: | PubMed, pmid15089504 | Services: | Forum | Review | Favorites |
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