Spherical neutron polarimetry of the magnetic structure in HoNi2B2C: Interplay between magnetic phases and superconductivity

M. Schneider; O. Zaharko; U. Gasser; A. Kreyssig; P. J. Brown; P. C. Canfield

doi:10.1103/PhysRevB.74.104426

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Spherical neutron polarimetry of the magnetic structure in HoNi2B2C: Interplay between magnetic phases and superconductivity

M. Schneider, O. Zaharko, U. Gasser, A. Kreyssig, P. J. Brown, P. C. Canfield

DOI 10.1103/PhysRevB.74.104426 · Physical Review B

T1

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Abstract

Spherical neutron polarimetry has been used to answer open questions about different magnetic phases in HoNi2B2C, which are important in their interplay with superconductivity. We established that the incommensurate a* structure of k3=(0.58500) at 5.4K in a zero magnetic field is a transverse-amplitude modulated wave with the magnetic moment along the b direction of the tetragonal structure. The depolarization of a neutron beam scattered from the k2=(000.915) reflections reveals a multidomain state but does not allow an unambiguous determination of the spin configuration. Based on present knowledge of borocarbides and other rare-earth systems we give preference to a long-range incommensurate helical structure as the origin of the k2=(000.915) reflections.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
HoNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	8.5	Pressure not reported	unknown