1.2k citations · 2.6k across the 29 of their papers we have counts for
29 papers
Breaking Rayleigh's law with spatially correlated disorder to control phonon transport
Simon Thébaud, Lucas Lindsay, Tom Berlijn
Controlling thermal transport in insulators and semiconductors is crucial for many technological fields such as thermoelectrics and thermal insulation, for which a low thermal cond…
Magnon Orbital Angular Momentum of Ferromagnetic Honeycomb and Zig-Zag Lattices
R. S. Fishman, T. Berlijn, J. Villanova +1
By expanding the gauge for magnon band in harmonics of momentum , we demonstrate that the only observable component of the magnon orbital angular momen…
Atomic dynamics in fluids: Normal mode analysis revisited
Jaeyun Moon, Lucas Lindsay, Takeshi Egami
Developing microscopic understanding of the thermal properties of liquids is challenging due to their strong dynamic disorder, which prevents characterization of the atomic degrees…
Primitive to conventional geometry projection for efficient phonon transport calculations
Xun Li, Simon Thebaud, Lucas Lindsay
The primitive Wigner-Seitz cell and corresponding first Brillouin zone (FBZ) are typically used in calculations of lattice vibrational and transport properties as they contain the…
Differential Multi-probe Thermal Transport Measurements of Multi-walled Carbon Nanotubes grown by Chemical Vapor Deposition
Qianru Jia, Yuanyuan Zhou, Xun Li +2
Carbon nanotubes (CNTs) are quasi-1D nanostructures that display both high thermal conductivity and intriguing low-dimensional phonon transport phenomena. In comparison to the adva…
Microscopic view of heat capacity of matter: solid, liquid, and gas
Jaeyun Moon, Simon Thébaud, Lucas Lindsay +1
Understanding thermodynamics in liquids at the atomic level is challenging because of strong atomic interactions and lack of symmetry. Recent prior theoretical works have focused o…
Phonons and phase symmetries in bulk from scattering measurements and theory
Xun Li, Seunghwan Do, Jiaqiang Yan +7
Phonon-derived behaviors are important indicators of novel phenomena in transition metal trihalides, including spin liquid behavior, two-dimensional magnetism, and spin-lattice cou…
Exact Results for the Orbital Angular Momentum of Magnons on Honeycomb Lattices
Randy S. Fishman, Lucas Lindsay, Satoshi Okamoto
We obtain exact results for the orbital angular momentum (OAM) of magnons at the high symmetry points of ferromagnetic (FM) and antiferromagnetic (AF) honeycomb lattices in the pre…
Perturbation theory and thermal transport in mass-disordered alloys: Insights from Green's function methods
Simon Thébaud, Tom Berlijn, Lucas Lindsay
Lowest-order quantum perturbation theory (Fermi's golden rule) for phonon-disorder scattering has been used to predict thermal conductivities in several semiconducting alloys with…
Phonon Chirality Induced by Vibronic-Orbital Coupling
Yun-Yi Pai, Claire E. Marvinney, Liangbo Liang +12
The notion that phonons can carry pseudo-angular momentum has become popular in the last decade, with recent research efforts highlighting phonon chirality, Berry curvature of phon…
Nearly-Resonant Crystalline-Phononic Coupling in Quantum Spin Liquid Candidate CsYbSe
Yun-Yi Pai, Claire E. Marvinney, Liangbo Liang +10
CsYbSe, a recently identified quantum spin liquid (QSL) candidate, exhibits strong crystal electric field (CEF) excitations. Here, we identify phonon and CEF modes with Raman s…
Success and breakdown of the T-matrix approximation for phonon-disorder scattering
S. Thébaud, C. A. Polanco, L. Lindsay +1
We examine the validity of the widely used T-matrix approximation for treating phonon-disorder scattering by implementing an unfolding algorithm that allows simulation of disorder…
Space-time dependent thermal conductivity in nonlocal thermal transport
Chengyun Hua, Lucas Lindsay
Nonlocal thermal transport is generally described by the Peierls-Boltzmann transport equation (PBE). However, solving the PBE for a general space-time dependent problem remains a c…
Phonons, Q-dependent Kondo spin fluctuations, and 4/phonon resonance in YbAl
Andrew D. Christianson, Victor R. Fanelli, Lucas Lindsay +7
The intermediate valence (IV) compound YbAl exhibits nonintegral valence (Yb 4 (5d6s) where z = 2+n = 2.75) in a moderately heavy (m* = 20-30me) ground stat…
Unfolding the complexity of quasi-particle physics in disordered materials
Sai Mu, Raina Olsen, B. Dutta +9
The concept of quasi-particles forms the theoretical basis of our microscopic understanding of emergent phenomena associated with quantum mechanical many-body interactions. However…
Experimental demonstration of a generalized Fourier's Law for non-diffusive thermal transport
Chengyun Hua, Lucas Lindsay, Xiangwen Chen +1
Phonon heat conduction over length scales comparable to their mean free paths is a topic of considerable interest for basic science and thermal management technologies. Although th…
Phonon-induced multi-color correlations in hBN single-photon emitters
Matthew Feldman, Alex Puretzky, Lucas Lindsay +5
Color centers in hexagonal boron nitride have shown enormous promise as single-photon sources, but a clear understanding of electron-phonon interaction dynamics is critical to thei…
Anisotropic thermal transport in bulk hexagonal boron nitride
Puqing Jiang, Xin Qian, Ronggui Yang +1
Hexagonal boron nitride (h-BN) has received great interest in recent years as a wide bandgap analog of graphene-derived systems. However, the thermal transport properties of h-BN,…
Dislocation-induced thermal transport anisotropy in single-crystal group-III nitride films
Bo Sun, Georg Haunschild, Carlos Polanco +4
Dislocations, one-dimensional lattice imperfections, are common to technologically important materials such as III-V semiconductors, and adversely affect heat dissipation in e.g.,…
Antisite pairs suppress the thermal conductivity of BAs
Qiang Zheng, Carlos A. Polanco, Mao-Hua Du +4
BAs was predicted to have an unusually high thermal conductivity at room temperature of 2000WmK, comparable to that of diamond. However, the experimentally me…
Interfacial Phonon Scattering and Transmission Loss in >1 um Thick Silicon-on-insulator Thin Films
Puqing Jiang, Lucas Lindsay, Xi Huang +1
Scattering of phonons at boundaries of a crystal (grains, surfaces, or solid/solid interfaces) is characterized by the phonon wavelength, the angle of incidence, and the interface…
Size Dependence and Ballistic Limits of Thermal Transport in Anisotropic Layered Two-Dimensional Materials
Zuanyi Li, Yizhou Liu, Lucas Lindsay +3
Layered materials have uncommonly anisotropic thermal properties due to their strong in-plane covalent bonds and weak out-of-plane van der Waals interactions. Here we examine heat…
High-temperature magnetostructural transition in van der Waals-layered a-MoCl3
Michael A. McGuire, Jiaqiang Yan, Paula Lampen-Kelley +9
The crystallographic and magnetic properties of the cleavable 4d3 transition metal compound a-MoCl3 are reported, with a focus on the behavior above room temperature. Crystals were…
Phonon thermal transport in 2H, 4H and 6H silicon carbide from first principles
Nakib Haider Protik, Ankita Katre, Lucas Lindsay +3
Silicon carbide (SiC) is a wide band gap semiconductor with a variety of industrial applications. Among its many useful properties is its high thermal conductivity, which makes it…