کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10682843 | 1016225 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The de Haas-van Alphen effect at a quantum critical point
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Many heavy-fermion systems are close to a quantum critical point in that, as pressure is varied, the paramagnetic heavy-fermion phase becomes unstable to a magnetically ordered phase at zero temperature. The superconducting phases all occur within a narrow range of pressures centered around the quantum critical point. In materials such as UGe2, the paramagnetic phase is unstable to a ferromagnetically ordered phase. In this case, the heavy-fermion superconducting phase is contained within the ferromagnetic phase. We examine the effect of quantum critical fluctuations on the heavy quasi-particles, and how these effects are manifested in the de Haas-van Alphen oscillations. It is found that the non-linear field-dependence of the susceptibility becomes vitally important as the quantum critical point is approached, and can give rise to a logarithmic dependence of the quasi-particle mass on the applied field.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 30, Issue 6, May 2005, Pages 885-895
Journal: Energy - Volume 30, Issue 6, May 2005, Pages 885-895
نویسندگان
Peter S. Riseborough,