Magnetotransport evidence of irreversible spin reorientation in the collinear antiferromagnetic state of underdoped ${\mathrm{Nd}}_{2-x}{\mathrm{Ce}}_x{\mathrm{CuO}}_4$

Abstract

We make use of the strong spin-charge coupling in the electron-doped cuprate ${\mathrm{Nd}}_{2-x}{\mathrm{Ce}}_x{\mathrm{CuO}}_4$ to probe changes in its spin system via magnetotransport measurements. We present a detailed study of the out-of-plane magnetoresistance in underdoped single crystals of this compound, including the nonsuperconducting, $0.05\le x\le 0.115$, and superconducting, $0.12\le x\le 0.13$, compositions. Special focus is put on the dependence of the magnetoresistance on the field orientation in the plane of the CuO${}_2$ layers. In addition to the kink at the field-induced transition between the noncollinear and collinear antiferromagnetic configurations, a sharp irreversible feature is found in the angle-dependent magnetoresistance of all samples in the high-field regime, at field orientations around the Cu--O--Cu direction. The obtained behavior can be explained in terms of field-induced reorientation of Cu${}^{2+}$ spins within the collinear antiferromagnetic state. It is, therefore, considered as an unambiguous indication of the long-range magnetic order.

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Cited by in corpus (4)

• Experimental evidence for Zeeman spin-orbit coupling in layered antiferromagnetic conductors
• High magnetic field evolution of the in-plane angular magnetoresistance of electron-doped Sr1-xLaxCuO2 in the normal state
• Texture-induced spin-orbit coupling and Skyrmion-electron bound states in a Néel antiferromagnet
• Electron states, bound to a texture in a Néel antiferromagnet