Mean-field model of the ferromagnetic ordering in the superconducting phase of ErNi2B2C

Article

关键词: MAGNETIC-STRUCTURES;    HOLMIUM;   

DOI  :  10.1103/PhysRevB.65.140514

来源: SCIE

【 摘 要 】

A mean-field model explaining most of the details in the magnetic phase diagram of ErNi2B2C is presented. The low-temperature magnetic properties are found to be dominated by the appearance of long-period commensurate structures. The stable structure at low temperatures and zero field is found to have a period of 40 layers along the a direction, and upon cooling it undergoes a first-order transition at T(C)similar or equal to2.3 K to a different 40-layered structure having a net ferromagnetic component of about 0.4mu(B)/Er. The neutron-diffraction patterns predicted by the two 40-layered structures, above and below T-C, are in agreement with the observations of Choi [Phys. Rev. Lett. 87, 107001 (2001)].

【 授权许可】

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