Relationship between the thermopower and entropy of strongly correlated electron systems
نویسندگان
چکیده
V. Zlatić,1,2 R. Monnier,3 J. K. Freericks,4 and K. W. Becker2 1Institute of Physics, Bijenička cesta 46, 10001 Zagreb, Croatia 2Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden, Germany 3ETH Hönggerberg, Laboratorium für Festkörperphysik, 8093 Zürich, Switzerland 4Georgetown University, Washington, DC 20057, USA Received 14 December 2005; revised manuscript received 18 May 2007; published 20 August 2007
منابع مشابه
Thermoelectric effects in a strongly correlated model for NaxCoO2
Thermal response functions of strongly correlated electron systems are of appreciable interest to the larger scientific community both theoretically and technologically. Here, we focus on the infinitely correlated t-J model on a geometrically frustrated two-dimensional triangular lattice. Using exact diagonalization on a finite sized system, we calculate the dynamical thermal response functions...
متن کاملEnhanced n-type thermopower in distortion-free LiMn2O4
Thermoelectric devices for power generation and solid-state refrigeration represent an important technology that could potentially offer long term solid-state solutions for increased energy efficiency and address environmental concerns. However, the efficiency of existing thermoelectric materials, limited temperature stability and potential scarcity of key elements, such as Te, have motivated r...
متن کاملNernst effect: evidence of local Kondo scattering in heavy fermions.
A distinctly temperature-dependent Nernst coefficient, ν, which is strongly enhanced over that of LaCu(2)Si(2), is observed between T=2 and 300 K for CeCu(2)Si(2) and Ce(0.8)La(0.2)Cu(2)Si(2). The enhanced ν(T) is determined by the asymmetry of the on-site Kondo (conduction electron -4f electron) scattering rate. Taking into account the measured Hall mobility, μ(H), the highly unusual thermopow...
متن کاملOxide Thermoelectrics: The Role of Crystal Structure on Thermopower in Strongly Correlated Spinels
This dissertation reports on the synthesis, structural and thermal characterization and electrical and thermal transport properties of a variety of strongly correlated spinels. General structure property relationships for electrical and thermal transport are discussed. However, the relationship between thermopower and features of the crystal structure such as spin, crystal field, anti-site diso...
متن کاملمقدمهای بر مدل هابارد و قطری‌سازی دقیق
Hubbard model is an important model in the theory of strongly correlated electron systems. In this contribution we introduce this model and the concepts of electron correlation by building on a tight binding model. After enumerating various methods of tackling the Hubbard model, we introduce the numerical method of exact diagonalization in detail. The book keeping and practical implementation ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007