Antiferromagnetic interlayer exchange coupling in all-semiconducting EuS/PbS/EuS trilayers

C.J.P. Smits; A.T. Filip; H.J.M. Swagten; B. Koopmans; W.J.M. Jonge, de; M. Chernyshova; L. Kowalczyk; K. Grasza; A. Szczerbakow; T. Story; W. Palosz; A.Y. Sipatov

doi:10.1103/PhysRevB.69.224410

Antiferromagnetic interlayer exchange coupling in all-semiconducting EuS/PbS/EuS trilayers

C.J.P. Smits, A.T. Filip, H.J.M. Swagten, B. Koopmans, W.J.M. Jonge, de, M. Chernyshova, L. Kowalczyk, K. Grasza, A. Szczerbakow, T. Story, W. Palosz, A.Y. Sipatov

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Abstract

A comprehensive experimental study on the antiferromagnetic interlayer exchange coupling in high quality epitaxial all-semiconducting EuS/PbS/EuS trilayers is reported. The influence of substrates, of the thickness of the nonmagnetic PbS spacer layer, and of temperature was investigated by means of SQUID magnetometry. In trilayers with a PbS thickness between 4 and 12 A the low temperature hysteresis loops showed the signature of antiferromagnetic coupling. The value of the interlayer exchange coupling energy was determined by simulating the data based on a Stoner-Wohlfarth model. An important observation was that the interlayer exchange coupling energy varies strongly with temperature, consistent with a power-law dependence of the exchange coupling constant on the saturation magnetization of the EuS layers. While no theoretical description is readily available, we conjecture that the observed behavior is due to a dependence of the interlayer exchange coupling energy on the exchange splitting of the EuS bands

Original language	English
Article number	224410
Pages (from-to)	224410-1/7
Journal	Physical Review B
Volume	69
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.69.224410
Publication status	Published - 2004

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Smits, C. J. P., Filip, A. T., Swagten, H. J. M., Koopmans, B., Jonge, de, W. J. M., Chernyshova, M., Kowalczyk, L., Grasza, K., Szczerbakow, A., Story, T., Palosz, W., & Sipatov, A. Y. (2004). Antiferromagnetic interlayer exchange coupling in all-semiconducting EuS/PbS/EuS trilayers. Physical Review B, 69(22), 224410-1/7. Article 224410. https://doi.org/10.1103/PhysRevB.69.224410

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title = "Antiferromagnetic interlayer exchange coupling in all-semiconducting EuS/PbS/EuS trilayers",

abstract = "A comprehensive experimental study on the antiferromagnetic interlayer exchange coupling in high quality epitaxial all-semiconducting EuS/PbS/EuS trilayers is reported. The influence of substrates, of the thickness of the nonmagnetic PbS spacer layer, and of temperature was investigated by means of SQUID magnetometry. In trilayers with a PbS thickness between 4 and 12 A the low temperature hysteresis loops showed the signature of antiferromagnetic coupling. The value of the interlayer exchange coupling energy was determined by simulating the data based on a Stoner-Wohlfarth model. An important observation was that the interlayer exchange coupling energy varies strongly with temperature, consistent with a power-law dependence of the exchange coupling constant on the saturation magnetization of the EuS layers. While no theoretical description is readily available, we conjecture that the observed behavior is due to a dependence of the interlayer exchange coupling energy on the exchange splitting of the EuS bands",

author = "C.J.P. Smits and A.T. Filip and H.J.M. Swagten and B. Koopmans and {Jonge, de}, W.J.M. and M. Chernyshova and L. Kowalczyk and K. Grasza and A. Szczerbakow and T. Story and W. Palosz and A.Y. Sipatov",

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T1 - Antiferromagnetic interlayer exchange coupling in all-semiconducting EuS/PbS/EuS trilayers

AU - Smits, C.J.P.

AU - Filip, A.T.

AU - Swagten, H.J.M.

AU - Koopmans, B.

AU - Jonge, de, W.J.M.

AU - Chernyshova, M.

AU - Kowalczyk, L.

AU - Grasza, K.

AU - Szczerbakow, A.

AU - Story, T.

AU - Palosz, W.

AU - Sipatov, A.Y.

PY - 2004

Y1 - 2004

N2 - A comprehensive experimental study on the antiferromagnetic interlayer exchange coupling in high quality epitaxial all-semiconducting EuS/PbS/EuS trilayers is reported. The influence of substrates, of the thickness of the nonmagnetic PbS spacer layer, and of temperature was investigated by means of SQUID magnetometry. In trilayers with a PbS thickness between 4 and 12 A the low temperature hysteresis loops showed the signature of antiferromagnetic coupling. The value of the interlayer exchange coupling energy was determined by simulating the data based on a Stoner-Wohlfarth model. An important observation was that the interlayer exchange coupling energy varies strongly with temperature, consistent with a power-law dependence of the exchange coupling constant on the saturation magnetization of the EuS layers. While no theoretical description is readily available, we conjecture that the observed behavior is due to a dependence of the interlayer exchange coupling energy on the exchange splitting of the EuS bands

AB - A comprehensive experimental study on the antiferromagnetic interlayer exchange coupling in high quality epitaxial all-semiconducting EuS/PbS/EuS trilayers is reported. The influence of substrates, of the thickness of the nonmagnetic PbS spacer layer, and of temperature was investigated by means of SQUID magnetometry. In trilayers with a PbS thickness between 4 and 12 A the low temperature hysteresis loops showed the signature of antiferromagnetic coupling. The value of the interlayer exchange coupling energy was determined by simulating the data based on a Stoner-Wohlfarth model. An important observation was that the interlayer exchange coupling energy varies strongly with temperature, consistent with a power-law dependence of the exchange coupling constant on the saturation magnetization of the EuS layers. While no theoretical description is readily available, we conjecture that the observed behavior is due to a dependence of the interlayer exchange coupling energy on the exchange splitting of the EuS bands

U2 - 10.1103/PhysRevB.69.224410

DO - 10.1103/PhysRevB.69.224410

M3 - Article

SN - 1098-0121

VL - 69

SP - 224410-1/7

JO - Physical Review B

JF - Physical Review B

IS - 22

M1 - 224410

ER -

Antiferromagnetic interlayer exchange coupling in all-semiconducting EuS/PbS/EuS trilayers

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