Giant parametric amplification of the nonlinear response in a single crystal of beryllium in a quantizing magnetic field

• Опубліковано в: : Физика низких температур
• Дата: 2006
• Автори: Tsindlekht, M.I., Logoboy, N., Egorov, V.S., Kramer, R.B.G., Jansen, A.G.M., Joss, W.
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2006
• Теми: К 100-летию со дня рождения Б.Г. Лазарева
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/120353
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Giant parametric amplification of the nonlinear response in
 a single crystal of beryllium in a quantizing magnetic field / M.I. Tsindlekht, N. Logoboy, V.S. Egorov, R.B.G. Kramer, A.G.M. Jansen, W. Joss // Физика низких температур. — 2006. — Т. 32, № 8-9. — С. 1129–1135. — Бібліогр.: 23 назв. — англ.

The nonlinear response to an ac magnetic field with and without parametric pumping was studied
 experimentally on a rod-like beryllium single crystal at low temperatures in a quantizing magnetic
 field applied parallel to the hexagonal axis. At low temperatures (≤ 3 K) giant parametric
 amplification of the nonlinear response is observed in narrow windows near de Haas– van Alphen
 (dHvA) beating antinodes where the amplitude of the magnetic oscillations is maximal. This effect
 is of threshold character with respect to the amplitude of the dHvA oscillations and occurs as a result
 of a diamagnetic phase transition of a strongly correlated electron gas into nonuniform state
 with formation of Condon domain structure. It is shown that the nonuniform phase appears periodically
 in a magnetic field. The components of rectified signal field reproduce the envelope of H–T
 critical curves and can be used for reconstruction of diamagnetic phase diagrams.