TY - JOUR
T1 - Field-induced magnetic phases in the normal and superconducting states of ErNi2B2C
AU - Jensen, A.
AU - Toft, K.N.
AU - Abrahamsen, A.B.
AU - McMorrow, D.F.
AU - Eskildsen, M.R.
AU - Andersen, N.H.
AU - Jensen, J.
AU - Hedegård, P.
AU - Klenke, J.
AU - Danilkin, S.
AU - Prokes, K.
AU - Sikolenko, V.
AU - Smeibidl, P.
AU - Bud'ko, S.L.
AU - Canfield, P.C.
PY - 2004
Y1 - 2004
N2 - We present a comprehensive neutron-diffraction study of the magnetic structures of ErNi2B2C in the presence of a magnetic field applied along [010], [110], or [001]. In zero field, the antiferromagnetic structure is transversely polarized with Qapproximate to0.55a* and the moments along the b direction. At the lowest temperatures, the modulation is close to a square wave, and transitions of Q between different commensurable values are observed when varying the field. The commensurable structures are analyzed in terms of a detailed mean-field model. Experimentally, the minority domain shows no hysteresis and stays stable up to a field close to the upper critical field of superconductivity, when the field is applied along [010]. Except for this possible effect, the influences of the superconducting electrons on the magnetic structures are not directly visible. Another peculiarity is that Q rotates by a small, but clearly detectable, angle of about 0.5degrees away from the [100] and the field direction, when the field is applied along [110] and is approximately equal to or larger than the upper critical field.
AB - We present a comprehensive neutron-diffraction study of the magnetic structures of ErNi2B2C in the presence of a magnetic field applied along [010], [110], or [001]. In zero field, the antiferromagnetic structure is transversely polarized with Qapproximate to0.55a* and the moments along the b direction. At the lowest temperatures, the modulation is close to a square wave, and transitions of Q between different commensurable values are observed when varying the field. The commensurable structures are analyzed in terms of a detailed mean-field model. Experimentally, the minority domain shows no hysteresis and stays stable up to a field close to the upper critical field of superconductivity, when the field is applied along [010]. Except for this possible effect, the influences of the superconducting electrons on the magnetic structures are not directly visible. Another peculiarity is that Q rotates by a small, but clearly detectable, angle of about 0.5degrees away from the [100] and the field direction, when the field is applied along [110] and is approximately equal to or larger than the upper critical field.
KW - 5-I nano
U2 - 10.1103/PhysRevB.69.104527
DO - 10.1103/PhysRevB.69.104527
M3 - Journal article
SN - 0163-1829
VL - 69
SP - 104527
JO - Physical Review B Condensed Matter
JF - Physical Review B Condensed Matter
IS - 10
ER -