Magnetic-field effects on the charge-spin stripe order in La-214 high-Tc cuprates

TL;DR

This study investigates how magnetic fields influence charge-spin stripe order in La-214 high-Tc cuprates, revealing that magnetic fields stabilize stripe order when it is not fully stable in zero field, affecting electrical resistivity.

Contribution

The paper demonstrates that magnetic fields can stabilize charge-spin stripe order in La-214 cuprates, especially when such order is weak or unobservable at zero field, providing new insights into field-induced effects.

Findings

Magnetic fields increase resistivity in samples with weak stripe order.

Stripe order stabilization depends on magnetic field strength.

Magnetic fields have negligible effect when stripe order is already stable.

Abstract

Magnetic-field effects on the charge-spin stripe order in La-214 high-Tc cuprates have been investigated from measurements of the in-plane electrical-resistivity, Rho_ab_. In La_2-x_Ba_x_CuO_4_ with x=0.10 and La_2-x_Sr_x_CuO_4_ with x=0.115 where the incommensurate charge peaks are weak and unobservable in zero field in elastic neutron-scattering measurements, respectively, the normal-state value of Rho_ab_ at low temperatures markedly increases with increasing field up to 27 T. For La_2-x_Ba_x_CuO_4_ with x=0.11 and Zn-substituted La_2-x_Sr_x_Cu_1-y_Zn_y_O_4_ with x=0.115 and y=0.02 where the charge stripe order is fairly stabilized in zero field, on the other hand, the increase in Rho_ab_ with increasing field is negligibly small. In conclusion, when the charge-spin stripe order is not fully stable in zero field, magnetic field operates to stabilize the charge-spin stripe order. The value of Rho_ab_ increases with increasing field depending on the stability of the charge stripe order.