scholarly journals Thermal transport of the frustrated spin-chain mineral linarite: Magnetic heat transport and strong spin-phonon scattering

2021 ◽  
Vol 104 (23) ◽  
Author(s):  
Matthias Gillig ◽  
Xiaochen Hong ◽  
Piyush Sakrikar ◽  
Gaël Bastien ◽  
A. U. B. Wolter ◽  
...  
Keyword(s):  
Heat Transport ◽  
Thermal Transport ◽  
Spin Chain ◽  
Phonon Scattering ◽  
Frustrated Spin ◽  
Strong Spin

scholarly journals Unusual Phonon Heat Transport in α−RuCl3 : Strong Spin-Phonon Scattering and Field-Induced Spin Gap

2018 ◽  
Vol 120 (11) ◽  
Author(s):  
Richard Hentrich ◽  
Anja U. B. Wolter ◽  
Xenophon Zotos ◽  
Wolfram Brenig ◽  
Domenic Nowak ◽  
...  
Keyword(s):  
Heat Transport ◽  
Phonon Scattering ◽  
Spin Gap ◽  
Strong Spin

scholarly journals Thermal transport properties of decagonal quasicrystals and their approximants

2013 ◽  
Vol 1517 ◽  
Author(s):  
Petar Popčević ◽  
Ante Bilušić ◽  
Kristijan Velebit ◽  
Ana Smontara
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
Transport Properties ◽  
Heat Transport ◽  
Thermal Transport ◽  
Strong Relationship ◽  
Decagonal Quasicrystal ◽  
Decagonal Quasicrystals ◽  
Plane Anisotropy ◽  
Out Of Plane

ABSTRACTTransport properties (thermal conductivity, electrical resistivity and thermopower) of decagonal quasicrystal d-AlCoNi, and approximant phases Y-AlCoNi, o-Al13Co4, m-Al13Fe4, m-Al13(Fe,Ni)4 and T-AlMnFe have been reviewed. Among all presented alloys the stacking direction (periodic for decagonal quasicrystals) is the most conductive one for the charge and heat transport, and the in/out-of-plane anisotropy is much larger than the in-plane anisotropy. There is a strong relationship between periodicity length along stacking direction and anisotropy of transport properties in both quasicrystals and their approximants suggesting a decrease of the anisotropy with increasing number of stacking layers.

ESR study of frustrated spin chain [Cu(bpy)H2O][Cu(bpy)(mal)H2O](ClO4)2

2002 ◽  
pp. 759-762
Author(s):  
T. Kunimoto ◽  
T. Kamikawa ◽  
S. Okubo ◽  
H. Ohta ◽  
H. Kikuchi
Keyword(s):  
Spin Chain ◽  
Frustrated Spin

Effects of composition and phonon scattering mechanisms on thermal transport in MFI zeolite films

2007 ◽  
Vol 102 (5) ◽  
pp. 053523 ◽  
Author(s):  
Yeny Hudiono ◽  
Abraham Greenstein ◽  
Carine Saha-Kuete ◽  
Brandon Olson ◽  
Samuel Graham ◽  
...  
Keyword(s):  
Thermal Transport ◽  
Phonon Scattering ◽  
Mfi Zeolite ◽  
Scattering Mechanisms ◽  
Zeolite Films

scholarly journals Thermodynamic properties of the anisotropic frustrated spin-chain compound linarite PbCuSO4(OH)2

2013 ◽  
Vol 88 (18) ◽  
Author(s):  
M. Schäpers ◽  
A. U. B. Wolter ◽  
S.-L. Drechsler ◽  
S. Nishimoto ◽  
K.-H. Müller ◽  
...  
Keyword(s):  
Thermodynamic Properties ◽  
Spin Chain ◽  
Frustrated Spin ◽  
Chain Compound

Transient Energy and Heat Transport in Metals

2009 ◽  
Author(s):  
Y. Ezzahri ◽  
A. Shakouri
Keyword(s):  
Heat Transport ◽  
Energy Transport ◽  
Phonon Scattering ◽  
Effect Of Temperature ◽  
New Formalism ◽  
Transient Energy ◽  
Scattering Time ◽  
Short Time ◽  
New Phenomena ◽  
Diffusive Part

A recently developed Shastry formalism for energy transport is used to analyze the temporal behavior of the energy and heat transport in metals. Comparison with Cattaneo’s equation is performed. Both models show the transition between ballistic and diffusive regimes. Furthermore, because the new model considers the discrete character of the lattice, it highlights some new phenomena such as oscillations in the energy transport at very short time scales. The energy relaxation of the conduction band electrons in metals is considered to be governed by the electron-phonon scattering, and the scattering time is taken to be averaged over the Fermi surface. Using the new formalism, one can quantify the transfer from ballistic modes to diffusive ones as energy propagates in the material and it is transformed into heat. While the diffusive contribution shows an almost exponentially decaying behavior with time, the non-diffusive part shows a damped oscillating behavior. The origin of this oscillation will be discussed as well as the effect of temperature on the dynamics of the energy modes transport.

scholarly journals Direct observation of large electron–phonon interaction effect on phonon heat transport

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiawei Zhou ◽  
Hyun D. Shin ◽  
Ke Chen ◽  
Bai Song ◽  
Ryan A. Duncan ◽  
...  
Keyword(s):  
Heat Transport ◽  
Phonon Scattering ◽  
Crystalline Silicon ◽  
Substantial Reduction ◽  
Phonon Transport ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Exciting Electron ◽  
Energy Conversion Devices ◽  
The Impact

AbstractAs a foundational concept in many-body physics, electron–phonon interaction is essential to understanding and manipulating charge and energy flow in various electronic, photonic, and energy conversion devices. While much progress has been made in uncovering how phonons affect electron dynamics, it remains a challenge to directly observe the impact of electrons on phonon transport, especially at environmental temperatures. Here, we probe the effect of charge carriers on phonon heat transport at room temperature, using a modified transient thermal grating technique. By optically exciting electron-hole pairs in a crystalline silicon membrane, we single out the effect of the phonon–carrier interaction. The enhanced phonon scattering by photoexcited free carriers results in a substantial reduction in thermal conductivity on a nanosecond timescale. Our study provides direct experimental evidence of the elusive role of electron–phonon interaction in phonon heat transport, which is important for understanding heat conduction in doped semiconductors. We also highlight the possibility of using light to dynamically control thermal transport via electron–phonon coupling.

scholarly journals Dynamical lattice instability versus spin liquid state in a frustrated spin chain system

2012 ◽  
Vol 85 (21) ◽  
Author(s):  
V. Gnezdilov ◽  
P. Lemmens ◽  
Yu. G. Pashkevich ◽  
D. Wulferding ◽  
I. V. Morozov ◽  
...  
Keyword(s):  
Liquid State ◽  
Spin Chain ◽  
Spin Liquid ◽  
Lattice Instability ◽  
Chain System ◽  
Dynamical Lattice ◽  
Frustrated Spin ◽  
Spin Liquid State

scholarly journals Reduction of Lattice Thermal Conductivity in PbTe Induced by Artificially Generated Pores

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Jae-Yeol Hwang ◽  
Eun Sung Kim ◽  
Syed Waqar Hasan ◽  
Soon-Mok Choi ◽  
Kyu Hyoung Lee ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Pore Structure ◽  
Transport Properties ◽  
Thermoelectric Materials ◽  
Thermal Transport ◽  
Lattice Thermal Conductivity ◽  
Phonon Scattering ◽  
Phonon Modes ◽  
Thermal Transport Properties

Highly dense pore structure was generated by simple sequential routes using NaCl and PVA as porogens in conventional PbTe thermoelectric materials, and the effect of pores on thermal transport properties was investigated. Compared with the pristine PbTe, the lattice thermal conductivity values of pore-generated PbTe polycrystalline bulks were significantly reduced due to the enhanced phonon scattering by mismatched phonon modes in the presence of pores (200 nm–2 μm) in the PbTe matrix. We obtained extremely low lattice thermal conductivity (~0.56 W m−1 K−1at 773 K) in pore-embedded PbTe bulk after sonication for the elimination of NaCl residue.

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