Strongly correlated new state Fermi systems as a of matter

作     者：V. R. Shaginyan A. Z. Msezane G. S. Japaridze K. G. Popov V. A. Khodel 

作者机构：Petersburg Nuclear Physics Institute NRC Kurchatov Institute Gatchina 188300 Russia Clark Atlanta University Atlanta GA 30314 USA Komi Science Center Ural Division RAS Syktyvkar 167982 Russia Russian Research Centre Kurchatov Institute Moscow 123182 Russia McDonnell Center for the Space Sciences & Department of Physics Washington University St. Louisa MO 63130 USA 

出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)

年 卷 期：2016年第11卷第5期

页      面：57-78页

核心收录：

学科分类：080705[工学-制冷及低温工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 070205[理学-凝聚态物理] 0807[工学-动力工程及工程热物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Acknowledgements V.R. Shaginyan is supported by the Russian Science Foundation  Grant No. 14-22-00281. A. Z. Msezane thanks the US DOE  Division of Chemical Sciences  Office of Energy Research  and ARO for research support. K. G. Popov is partly supported by RFBR # 14-02-00044. V. A. Khodel thanks the McDonnell Center for the Space Sciences for support 

主　　题：quantum phase transition flat bands systems quantum spin liquids heavy fermions effects scaling behavior new state of matter non-Fermi-liquid states strongly correlated electron quasicrystals thermoelectric and thermomagnetic 

摘      要：The aim of this review paper is to expose a new state of matter exhibited by strongly correlated Fermi systems represented by various heavy-fermion （HF） metals, two-dimensional liquids like 3He, compounds with quantum spin liquids, quasicrystals, and systems with one-dimensional quantum spin liquid. We name these various systems HF compounds, since they exhibit the behavior typical of HF metals. In HF compounds at zero temperature the unique phase transition, dubbed throughout as the fermion condensation quantum phase transition （FCQPT） can occur; this FCQPT creates flat bands which in turn lead to the specific state, known as the fermion condensate. Unlimited increase of the effective mass of quasiparticles signifies FCQPT; these quasiparticles determine the thermodynamic, transport and relaxation properties of HF compounds. Our discussion of numerous salient experimen- tal data within the framework of FCQPT resolves the mystery of the new state of matter. Thus, FCQPT and the fermion condensation can be considered as the universal reason for the non-Fermi liquid behavior observed in various HF compounds. We show analytically and using arguments based completely on the experimental grounds that these systems exhibit universal scaling behavior of their thermodynamic, transport and relaxation properties. Therefore, the quantum physics of different HF compounds is universal, and emerges regardless of the microscopic structure of the compounds. This uniform behavior allows us to view it as the main characteristic of a new state of matter exhibited by HF compounds.