Uniaxial Strain Engineering of Anisotropic Phonon in Few‐Layer Violet Phosphorus with High Stretchability for Polarized Sensitive Flexible Photodetector
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DOI: 10.1002/adfm.202410783
Abstract: The manifestation of mechanical phenomena in quantum materials at the macroscopic level is intricately linked to pronounced electron‐electron interactions within their lattices, a relationship that becomes especially evident in low‐dimensional materials. Violet phosphorous (VP), a… read more here.
Keywords: phonon; layer; uniaxial strain; strain engineering ... See more keywords
Near‐Field Phonon Nanoscopy and Imaging of Structural Variants in Mixed Phase BiFeO3
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DOI: 10.1002/adfm.202422945
Abstract: Epitaxial mixed phase BiFeO3 (BFO) can be stabilized in a nanoscale mixture of tetragonal‐like and rhombohedral‐like polymorphs embedded in a tetragonal‐like matrix, which provides a fertile playground for the exploration of fascinating material properties. The… read more here.
Keywords: phonon; field; mixed phase; structural variants ... See more keywords
Unveiling Phonon Contributions to Thermal Conductivity and the Applicability of the Wiedemann—Franz Law in Ruthenium and Tungsten Thin Films
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DOI: 10.1002/adfm.202511592
Abstract: Thermal transport in nanoscale interconnects is dominated by intricate electron–phonon interactions and microstructural influences. As copper faces limitations at the nanoscale, tungsten and ruthenium have emerged as promising alternatives due to their substantial phonon contributions… read more here.
Keywords: phonon; thermal conductivity; ruthenium; thermal transport ... See more keywords
Launching Phonon Polaritons by Natural Boron Nitride Wrinkles with Modifiable Dispersion by Dielectric Environments.
Sign Up to like & getrecommendations! Published in 2017 at "Advanced materials"
DOI: 10.1002/adma.201702494
Abstract: Interference-free hyperbolic phonon polaritons (HPPs) excited by natural wrinkles in a hexagonal boron nitride (hBN) microcrystal are reported both experimentally and theoretically. Although their geometries are off-resonant with the excitation wavelength, the wrinkles compensate for… read more here.
Keywords: phonon polaritons; dielectric environments; boron nitride; phonon ... See more keywords
Semiconductor Thermal and Electrical Properties Decoupled by Localized Phonon Resonances.
Sign Up to like & getrecommendations! Published in 2023 at "Advanced materials"
DOI: 10.1002/adma.202209779
Abstract: Thermoelectric materials convert heat into electricity through thermally driven charge transport in solids, or vice versa for cooling. To be competitive with conventional energy-generation technologies, a thermoelectric material must possess the properties of both an… read more here.
Keywords: phonon resonances; electrical properties; semiconductor; phonon ... See more keywords
Interstitials in Thermoelectrics
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DOI: 10.1002/adma.202406009
Abstract: Defect structure is pivotal in advancing thermoelectric performance with interstitials being widely recognized for their remarkable roles in optimizing both phonon and electron transport properties. Diverse interstitial atoms are identified in previous works according to… read more here.
Keywords: phonon; electron transport; transport; interstitials thermoelectrics ... See more keywords
Fundamental Limits on the Electron‐Phonon Coupling and Superconducting Tc
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DOI: 10.1002/adma.202507013
Abstract: Fundamental upper bounds on the electron‐phonon interaction strength and superconducting transition temperature Tc in metals are established based on the intrinsic instability of the equilibrium between electrons and the crystal lattice under strong interaction. This… read more here.
Keywords: phonon; limits electron; coupling superconducting; phonon coupling ... See more keywords
Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α-Quartz.
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DOI: 10.1002/adma.202511289
Abstract: While the linear motion of phonons is widely understood as arising from the translational symmetry of crystal lattices, recent studies have revealed the intrinsic rotational motion of phonons in condensed matter with discrete rotational symmetry.… read more here.
Keywords: phonon; pseudoangular momentum; conservation pseudoangular; chiral acoustic ... See more keywords
Tuning Electron–Phonon Coupling Interaction for the Efficient Wide Blue Emission of Pb2+‐Doped Cs2InCl5·H2O
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DOI: 10.1002/adom.202400184
Abstract: Lead‐free perovskites exhibit unique crystal structures and optical properties due to their low‐dimensional structure. However, the 0D structure of Cs2InCl5·H2O usually demonstrates poor optical properties at room temperature due to their extremely strong electron–phonon coupling… read more here.
Keywords: phonon; pb2; blue emission; cs2incl5 h2o ... See more keywords
Anomalously Suppressed Thermal Conduction by Electron‐Phonon Coupling in Charge‐Density‐Wave Tantalum Disulfide
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DOI: 10.1002/advs.201902071
Abstract: Abstract Charge and thermal transport in a crystal is carried by free electrons and phonons (quantized lattice vibration), the two most fundamental quasiparticles. Above the Debye temperature of the crystal, phonon‐mediated thermal conductivity (κ L)… read more here.
Keywords: density wave; charge density; charge; phonon ... See more keywords
Atomistic Engineering of Phonons in Functional Oxide Heterostructures
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DOI: 10.1002/advs.202103403
Abstract: Engineering of phonons, that is, collective lattice vibrations in crystals, is essential for manipulating physical properties of materials such as thermal transport, electron‐phonon interaction, confinement of lattice vibration, and optical polarization. Most approaches to phonon‐engineering… read more here.
Keywords: atomic scale; phonon; engineering phonons; atomistic engineering ... See more keywords