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Momentum dependence of magnetic response in heavy-fermion systems
Affiliation:1. Laboratoire de Magnétisme et Physique des Hautes Energies, LMPHE (URAC 12), Département de Physique, B.P. 1014, Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco;2. Institut of Nanomaterials and Nanotechnology, MAScIR, Rabat, Morocco;3. Hassan II Academy of Science and Technology, Rabat, Morocco;4. Department of Science, Moulay Ismail University, Faculté Polydisciplinaire, B.P. 509, Boutalamine 52000, Errachidia, Morocco;1. Department of Vehicle Engineering, College of Mechanical and Electrical Engineering, Central South University, 932 Lushan South Road, Changsha, Hunan 410083, China;2. Department of Mechanical and Energy Engineering, Shaoyang University, 207 National Road, Daxiang District, Shaoyang, Hunan 422000, China;3. School of Physics and Electronics, Central South University, 932 Lushan South Road, Changsha, Hunan 410083, China;4. College of Electrical and Information Engineering, Hunan University, 2 Lusahan South Road, Hunan, Changsha 410082, China;5. Science and Technology of Optical Radiation Laboratory, 50 Yongding Road, Beijing 100854, China;1. School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China;2. Tianjin Key Laboratory for Photoelectric Materials and Devices, Tianjin University of Technology, Tianjin 300384, China;1. Environmental Microbiology and Ecology Research Center, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China;2. Shanghai Information Center for Life Sciences, Shanghai Institute of Biological Sciences, Chinese Academy of Science, Shanghai 200031, PR China;3. Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China;4. Department of Civil & Environmental Engineering, Wayne State University, Detroit, MI 48202, USA
Abstract:The dynamical magnetic response of a heavy-fermion system CeCu6 is analyzed with the concept of nearly localized quasi-particles. It is explained why the product χ(q)Г(q) of the susceptibility χ(q) and the magnetic relaxation rate Г(q) is independent of the momentum q although both χ(q) and Г(q) depend on q. A generalization of the Korringa relation between χ(q) and Г(q) is formulated.
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