High-performance non-Fermi-liquid metallic thermoelectric materials
نویسندگان
چکیده
Abstract Searching for high-performance thermoelectric (TE) materials in the paradigm of narrow-bandgap semiconductors is hampered by a bottleneck. Here we report on discovery metallic compounds, TiFe x Cu 2 ?1 Sb and 1.33 Sb, showing thermopower exceeding many TE dimensionless figure merits zT s comparable with state-of-the-art materials. A quasi-linear temperature ( T ) dependent electrical resistivity 2–700 K logarithmic -dependent electronic specific heat at low coexist high thermopower, highlighting strong intercoupling non-Fermi-liquid (NFL) quantum critical behavior electrons transports. Electronic structure analysis reveals competition between antiferromagnetic (AFM) ordering Kondo-like spin compensation as well parallel two-channel Kondo effect. The magnetic susceptibility agrees scenario local correlation. Our work demonstrates correlation among performance, NFL criticality, fluctuation, which opens up directions future research.
منابع مشابه
Eco-friendly high-performance silicide thermoelectric materials
Silicide-based thermoelectrics are examples of cost-efficient and environmentally friendly new energy materials, which can be used for power-generation applications in the range of 500–800 K. We review the research focusing on the exploration of n-typeMg2IV-based solid solutions (IV= Si, Ge and Sn) and summarize the most prominent discoveries achieved so far in their studies. Owing to their sup...
متن کاملNon-fermi-liquid behavior of quasi-one-dimensional pseudogap materials.
We study the spectral function of the pseudogap phase of quasi-one-dimensional charge density wave materials. Using a stochastic approach and emphasizing an exact treatment of non-Gaussian order parameter fluctuations we will go beyond a usual perturbative calculation. Our results give a good fit to angle-resolved photoemission spectroscopy data and explain the absence of the Fermi edge in char...
متن کاملDesigning high-performance layered thermoelectric materials through orbital engineering
Thermoelectric technology, which possesses potential application in recycling industrial waste heat as energy, calls for novel high-performance materials. The systematic exploration of novel thermoelectric materials with excellent electronic transport properties is severely hindered by limited insight into the underlying bonding orbitals of atomic structures. Here we propose a simple yet succes...
متن کاملStrain-assisted, low-temperature synthesis of high-performance thermoelectric materials.
Utilizing internal energy artificially implemented by cold-pressing in the specimens, we demonstrate a way to synthesize high-quality bulk thermoelectric materials at otherwise too low a temperature to approach to an equilibrium state. This low-temperature synthesis technique will provide a new opportunity to integrate high-performance thermoelectric materials into various electronic devices fo...
متن کاملStripes, Non-Fermi-Liquid Behavior, and High-Tc Superconductivity
Received 19 February 1997 The electronic structure of the high-Tc cuprates is studied in terms of “large-U” and “small-U” orbitals. A striped structure and three types of quasiparticles are obtained, polaron-like “stripons” carrying charge, “svivons” carrying spin, and “quasielectrons” carrying both. The anomalous properties are explained, and specifically the behavior of the resistivity, Hall ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: npj computational materials
سال: 2023
ISSN: ['2057-3960']
DOI: https://doi.org/10.1038/s41524-023-01001-y