Extraordinary role of Zn in enhancing thermoelectric performance of Ga-doped n-type PbTe

2022 ◽  
Author(s):  
Zhong-zhen Luo ◽  
Songting Cai ◽  
Shiqiang Hao ◽  
Trevor Bailey ◽  
Yubo Luo ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Carrier Concentration ◽  
Lattice Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Ga Doping ◽  
Role Of Zn

Although Ga doping can weaken the electron phonon coupling of n-type PbTe, Ga-doped PbTe has a relatively low carrier concentration (n) and high lattice thermal conductivity (κlat), resulting in a...

scholarly journals A first-principles study of the effects of electron–phonon coupling on the thermoelectric properties: a case study of the SiGe compound

2018 ◽  
Vol 6 (25) ◽  
pp. 12125-12131 ◽  
Author(s):  
D. D. Fan ◽  
H. J. Liu ◽  
L. Cheng ◽  
J. H. Liang ◽  
P. H. Jiang
Keyword(s):  
Thermal Conductivity ◽  
Carrier Concentration ◽  
First Principles ◽  
Figure Of Merit ◽  
Lattice Thermal Conductivity ◽  
Thermoelectric Figure Of Merit ◽  
Phonon Coupling ◽  
Thermoelectric Figure ◽  
Electron Phonon Coupling

The lattice thermal conductivity of the SiGe compound can be significantly reduced by electron–phonon coupling at higher carrier concentration, which in turn obviously enhances its thermoelectric figure-of-merit.

Role of electron–phonon coupling in thermal conductivity of metallic nanofluids

2019 ◽  
Vol 52 (48) ◽  
pp. 485302 ◽  
Author(s):  
Dong-Xing Song ◽  
Yu-Feng Zhang ◽  
Wei-Gang Ma ◽  
Xing Zhang
Keyword(s):  
Thermal Conductivity ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

Distinct Signatures of Electron–Phonon Coupling Observed in the Lattice Thermal Conductivity of NbSe3 Nanowires

Nano Letters ◽  
2018 ◽  
Vol 19 (1) ◽  
pp. 415-421 ◽  
Author(s):  
Lin Yang ◽  
Yi Tao ◽  
Jinyu Liu ◽  
Chenhan Liu ◽  
Qian Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Lattice Thermal Conductivity ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

Large electronic sputtering yield of nanodimensional Au thin films: Dominant role of thermal conductivity and electron phonon coupling factor

2017 ◽  
Vol 121 (9) ◽  
pp. 095308 ◽  
Author(s):  
Udai B. Singh ◽  
Compesh Pannu ◽  
Dinesh C. Agarwal ◽  
Sunil Ojha ◽  
Saif A. Khan ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Dominant Role ◽  
Coupling Factor ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Sputtering Yield ◽  
Au Thin Films

scholarly journals Pivotal role of magnetic ordering and strain in lattice thermal conductivity of chromium-trihalide monolayers

2D Materials ◽  
2021 ◽  
Author(s):  
Tribhuwan Pandey ◽  
Francois M Peeters ◽  
Milorad V Milosevic
Keyword(s):  
Thermal Conductivity ◽  
Magnetic Materials ◽  
Tensile Strain ◽  
Lattice Thermal Conductivity ◽  
Magnetic Ordering ◽  
Phonon Transport ◽  
Phonon Coupling ◽  
Spin Devices ◽  
Very High

Abstract Understanding the coupling between spin and phonons is critical for controlling the lattice thermal conductivity (κl) in magnetic materials, as we demonstrate here for CrX3 (X = Br and I) monolayers. We show that these compounds exhibit large spin-phonon coupling (SPC), dominated by out-ofplane vibrations of Cr atoms, resulting in significantly different phonon dispersions in ferromagnetic (FM) and paramagnetic (PM) phases. Lattice thermal conductivity calculations provide additional evidence for strong SPC, where particularly large κlis found for the FM phase. Most strikingly, PM and FM phases exhibit radically different behavior with tensile strain, where κl increases with strain for the PM phase, and strongly decreases for the FM phase — as we explain through analysis of phonon lifetimes and scattering rates. Taken all together, we uncover the very high significance of SPC on the phonon transport in CrX3 monolayers, a result extendable to other 2D magnetic materials, that will be useful in further design of thermal spin devices.

Ultralow Lattice Thermal Conductivity in SnTe by Manipulating the Electron–Phonon Coupling

2019 ◽  
Vol 123 (26) ◽  
pp. 15996-16002 ◽  
Author(s):  
Shi-Xin Lin ◽  
Xiaojian Tan ◽  
Hezhu Shao ◽  
Jingtao Xu ◽  
Qingsong Wu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Lattice Thermal Conductivity ◽  
Phonon Coupling ◽  
Electron Phonon Coupling
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