Magnetic Structure of Electronic Inhomogeneities in Cuprates: Competition between Stripes and Spirals

G. Seibolda, R.S. Markiewiczb,c,d and J. Lorenzanac,d aInstitut für Physik, BTU Cottbus, P.). Box 101344, 03013 Cottbus, Germany bPhysics Department, Northeastern University, Boston MA 02115, USA cSMC-INFM-CNR and Dipartimento di Fisica, Università di Roma "La Sapienza", P. Aldo Moro 2, 00185 Roma, Italy dISC-CNR, Via dei Taurini 19, I-00185 Roma, Italy

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It is shown that the magnetic structure of high-Tc superconductors is strongly influenced by the next-nearest neighbor hopping parameter t' which distinguishes different families of cuprates. Our investigations indicate that uniform: spirals get favored by a large t'/t ratio but are unstable at small doping towards stripes with spin canting. For large |t'/t| spirals can be stabilized under certain conditions in the overdoped regime which may explain the elastic incommensurate magnetic response recently observed in iron-co-doped Bi2201 materials.

DOI: 10.12693/APhysPolA.121.1019 PACS numbers: 71.27.+a, 73.22.Gk, 75.10.Lp