Enhancement of long-range magnetic order by magnetic field in superconducting La2CuO4+y
B. Khaykovich, Y. S. Lee, R. W. Erwin, S.-H. Lee, S. Wakimoto, K. J. Thomas, M. A. Kastner, R. J. Birgeneau
DOI 10.1103/PhysRevB.66.014528 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We report a detailed study, using neutron scattering, transport and magnetization measurements, of the interplay between superconducting (SC) and spin density wave (SDW) orders in La2CuO4+y. Both kinds of order set in below the same critical temperature. However, the SDW order grows with applied magnetic field, whereas SC order is suppressed. Most importantly, the field dependence of the SDW Bragg peak intensity has a cusp at zero field, as predicted by a recent theory of competing SDW and SC orders. This leads us to conclude that there is a repulsive coupling between the two order parameters. The question of whether the two kinds of order coexist or microscopically phase separate is discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2CuO4+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 42 | Pressure unresolved | onset |
| La2CuO4.11 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 42 | Pressure unresolved | onset |
| La2-x-yNdySrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La1.88Sr0.12CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Direct Relation between the Low-Energy Spin Excitations and Superconductivity of Overdoped High-Tc Superconductors
similarity 0.96S. Wakimoto et al.
Source status unknown — claims are unverified
Magnetic-field dependence of planar copper and oxygen spin-lattice relaxation rates in the superconducting state of YBa2Cu3O7
similarity 0.95J. A. Martindale et al.
Source status unknown — claims are unverified
Importance of structural instability to high-temperature superconductivity
similarity 0.95A. Bussmann-Holder et al.
Source status unknown — claims are unverified
Hidden Quantum Spin-Gap State in the Static Stripe Phase of High-Temperature La2−xSrxCuO4 Superconductors
similarity 0.95M. Kofu et al.
Source status unknown — claims are unverified
Effect of a magnetic field on long-range magnetic order in stage-4 and stage-6 superconducting La2CuO4+y
similarity 0.95B. Khaykovich et al.
Source status unknown — claims are unverified
Angular dependence of upper critical field for high-temperature superconductors
similarity 0.95Kenji Takanaka et al.
Source status unknown — claims are unverified