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We analyze the vortex core structure in the stripe phase of underdoped layered superconductors. The stripes arise primarily from charge-spin separation in a low-dimensional system. Coexistence of charge (hole-rich) and spin (hole-poor) nanodomains and superconductivity has been reported in recent years. Recently, the local density of states modulation around a vortex core has been found. The modulation indicates a competing type of order that can coexist with superconductivity. The idea is that where the superconducting order is suppressed in the core of a vortex, the competing order can be manifested. We analyze the competing orders on the basis of the Ginzburg-Landau theory. Finally, we note that the existence of competing orders gives rise to vortices that effectively have two core radii defined by the superconducting and charge coherence length.
Słowa kluczowe
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Tom
Strony
403--408
Opis fizyczny
Bibliogr. 16 poz.
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autor
- Laboratory of Physics of Structured Matter, IFTR Polish Academy of Sciences, Świętokrzyska 21, 00-049 Warsaw, Poland, tlenkoc@ippt.gov.pl
Bibliografia
- 1. H. DING, M.R. NORMAN, J.C. CAMPUZANO, M. RANDERIA, A.F. BALLMAN, T. TOKOYA, T. TAKAHASHI, T. MOCHIKU, K. KADOWAKI, Angle-resolved photoemission spectroscopy study of the superconducting anisotropy in Bi2Sr2CaCu20s+x, Phys. Rev. B 54, R9678, 1996.
- 2. J.G. BEDNORZ, K.A. MOLLER, Possible high Tc superconductivity in the Ba-La-Cu-O system, Z. Phys. B64, 189, 1986.
- 3. L.P. PRYADKO, S. KIVELSON, D.W. HONE, Instability of charge ordered states in doped antiferromagnets, Phys. Rev. Lett. 80, 5651, 1998.
- 4. Y. ZHANG, E. DEMLER, S. SACHDEV, Competing orders in magnetic field: Spin and charge order in the cuprate superconductors, Phys. Rev. B 66, 0945501, 2002.
- 5. C. HOWALD, H. EISAKI, N. KANEKO, A KAPITULNIE, Coexistence of charged stripes and superconductivity in Bi2Sr2CaCu20g+i, cond-mat/0201546.
- 6. Z. ISLAM, S.K. SINHA, D. HASKEL, J.C. LANG, G. SRAJER, D.R. HAEPFNER, B.W. VEAL, H.A. MOOK, X-ray-diffraction study of charge-density-waves and oxygen-ordering in YBa2Cu306+i Superconductor, cond-mat/0110390.
- 7. J. TRANQUADA, B.J. STERNLIEB, J.D. AXE, Y. NAKAMURA, S. UCHIDA, Evidence for stripe correlations of spins and holes in copper oxide superconductors, Nature, 375, 561-563, 1995.
- 8. J. ZAANEN, O. GUNNARSON, Charged magnetic domains and the magnetism of high-Tc oxides, Phys. Rev. B 40, 7391, 1989; H. Schultz, Phys. Rev. Lett. 64, 1445, 1990.
- 9. S. MORI, C. CHEN, S.-W. CHEONG, Pairing of charge-ordered stripes in (La,Ca)Mn03, Nature, 392, 473, 1998.
- 10. D. ROGULA, T. LENKOWSKA-CZERWIŃSKA, Alternating states in layered high-Tc supeconductors, J. Tech. Phys., 42, 2, 269, 2001.
- 11. S.A. KIVELSON, V.J. EMERY, [in:] Strongly Correlated Electronic Materials: The Los Alamos Symposium 1993, K.S. Bedell, Z. Wang, D.E. Meltzer, A.V. Balatsky, E. Abrahams [Eds.] (Addison-Wesley, Reading, Massachusetts, 1994).
- 12. O. ZACHAR, S.A. KIVELSON, V.J. EMERY, Landau theory of stripe phases in cuprates and nicelates, Phys. Rev. B 57, 1422, 1998.
- 13. D.-H. LEE, Superconductivity in a doped Mott insulator, Phys. Rev. Lett., 84, 2694, 2000.
- 14. M. FRANZ, Z. TESANOVIC, Vortex state in a doped Mott insulator, cond-mat/0002137.
- 15. E. HOFFMAN, E.W. HUDSON, K.M. LANG, V. MADHAVAN, H. EISAKI, S. UCHIDA, J.C. DAVIS, A four-unit cell periodic pattern of quasiparticle states surrounding vortex cores in Bi2Sr2CaCu20g+ls, Science 295, 466, 2002.
- 16. B. LAKE et al., Antiferromagnetic Order Induced by an Applied Magnetic Field in a High-Temperature Superconductor, Nature 415, 299, 2002, cond-mat/0201349; H.A. Mook et al., Magnetic Order in YBa2Cu306+a: Superconductors, cond-mat/0204002.
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Bibliografia
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bwmeta1.element.baztech-article-BAT5-0002-0061