Перегляд інформації про документ
Назва:
Antiferromagnetic interlayer exchange coupling in all-semiconducting EuS/PbS/EuS trilayers
Колекція:
Статті »
Видавець:
Physical review B
Рік публікації:
ISBN/ISSN:
Вид документа:
стаття
Мова документа:
англійська
Додано у архів:
17.09.2013
Зведена інформація по документу:
Smits, C.J.P. Antiferromagnetic interlayer exchange coupling in all-semiconducting EuS/PbS/EuS trilayers [Текст] / Smits C.J.P., Filip A.T., Swagten H.J.M., Koopmans B., de Jonge W.J.M., Chernyshova M., Kowalczyk L., Grasza K., Szczerbakow A., Story T., Palosz W., Sipatov A.Yu. // Статті : - Physical review B, 2004.
Постійне посилання:
Коротке посилання на файл:
Аанотація:

вiдсутня

отсутствует

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 Å 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.


© 2019 — Розроблено лабораторією інформаційно-пошукових систем НТУ "ХПІ"