کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1863865 | 1037686 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic-field-induced reentrance of Fermi-liquid behavior and spin-lattice relaxation rates in YbCu5âxAux
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Magnetic-field-induced reentrance of Fermi-liquid behavior and spin-lattice relaxation rates in YbCu5âxAux Magnetic-field-induced reentrance of Fermi-liquid behavior and spin-lattice relaxation rates in YbCu5âxAux](/preview/png/1863865.png)
چکیده انگلیسی
A strong departure from Landau-Fermi liquid (LFL) behavior have been recently revealed in observed anomalies in both the magnetic susceptibility Ï and the muon and 63Cu nuclear spin-lattice relaxation rates 1/T1 of YbCu5âxAux (x=0.6). We show that the above anomalies along with magnetic-field-induced reentrance of LFL properties are indeed determined by the dependence of the quasiparticle effective mass Mâ on magnetic field B and temperature T and demonstrate that violations of the Korringa law also come from Mâ(B,T) dependence. We obtain this dependence theoretically utilizing our approach based on fermion condensation quantum phase transition (FCQPT) notion. Our theoretical analysis of experimental data on the base of FCQPT approach permits not only to explain the above two experimental facts in a unified manner, but to unveil their universal properties, relating the peculiar features of both longitudinal magnetoresistance and specific heat in YbRh2Si2 to the behavior of spin-lattice relaxation rates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 373, Issue 41, 5 October 2009, Pages 3783-3786
Journal: Physics Letters A - Volume 373, Issue 41, 5 October 2009, Pages 3783-3786
نویسندگان
V.R. Shaginyan, A.Z. Msezane, K.G. Popov, V.A. Stephanovich,