TY - JOUR

T1 - Magnetic field effects and magnetic anisotropy in lightly doped (formula presented)

AU - Matsuda, M.

AU - Fujita, M.

AU - Yamada, K.

AU - Birgeneau, R. J.

AU - Endoh, Y.

AU - Shirane, G.

PY - 2002

Y1 - 2002

N2 - The effects of the application of a magnetic field on the diagonal stripe spin-glass phase is studied in lightly doped (formula presented) (formula presented) and 0.024). With increasing magnetic field, the magnetic elastic intensity at the diagonal incommensurate (DIC) positions (formula presented) decreases as opposed to the increase seen in superconducting samples. This diminution in intensity with increasing magnetic field originates from a spin reorientation transition, which is driven by the antisymmetric exchange term in the spin Hamiltonian. On the other hand, the transition temperature, the incommensurability, and the peak width of the diagonal incommensurate correlations are not changed with magnetic field. This result suggests that the magnetic correlations are determined primarily by the charge disproportionation and that the geometry of the diagonal incommensurate magnetism is also determined by effects-that is, stripe formation-which are not purely magnetic in origin. The Dzyaloshinskii-Moriya antisymmetric exchange is nevertheless important in determining the local spin structure in the DIC stripe phase.

AB - The effects of the application of a magnetic field on the diagonal stripe spin-glass phase is studied in lightly doped (formula presented) (formula presented) and 0.024). With increasing magnetic field, the magnetic elastic intensity at the diagonal incommensurate (DIC) positions (formula presented) decreases as opposed to the increase seen in superconducting samples. This diminution in intensity with increasing magnetic field originates from a spin reorientation transition, which is driven by the antisymmetric exchange term in the spin Hamiltonian. On the other hand, the transition temperature, the incommensurability, and the peak width of the diagonal incommensurate correlations are not changed with magnetic field. This result suggests that the magnetic correlations are determined primarily by the charge disproportionation and that the geometry of the diagonal incommensurate magnetism is also determined by effects-that is, stripe formation-which are not purely magnetic in origin. The Dzyaloshinskii-Moriya antisymmetric exchange is nevertheless important in determining the local spin structure in the DIC stripe phase.

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U2 - 10.1103/PhysRevB.66.174508

DO - 10.1103/PhysRevB.66.174508

M3 - Article

AN - SCOPUS:85038272790

SN - 1098-0121

VL - 66

SP - 1

EP - 6

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

ER -