Results 231 to 240 of about 246,481 (370)

Decoupling Ultralow Coherent and Particle‐Like Phonon Transport via Bonding Hierarchy in Soft Superionic Crystals

open access: yesAdvanced Science, EarlyView.
The bonding hierarchy in X6Re6S8I8 (X = Rb, Cs) promotes phonon localization, generating extensive discrete phonon flat bands that redefine the lower bounds of lattice thermal conductivity in crystals. Abstract Within the unified theoretical framework for thermal transport, the inherent interplay between coherent tunneling and propagative phonon ...
Wenjie Xiong   +6 more
wiley   +1 more source

Machine‐Learning‐Assisted Understanding of Depth‐Dependent Thermal Conductivity in Lithium Niobate Induced by Point Defects

open access: yesAdvanced Electronic Materials, EarlyView.
Thermal conductivity, a fundamental property of lithium niobate, plays a pivotal role in determining its device performance. By integrating experiments with machine‐learning‐assisted simulations, this study demonstrates that oxygen vacancies induced by thermal reduction result in a pronounced suppression of thermal conductivity and a marked depth ...
Yunjia Bao   +7 more
wiley   +1 more source

Weyl Fermion Manipulation Through Magnetic Transitions in the Ferromagnetic Non‐Centrosymmetric Weyl Semimetal PrAlSi

open access: yesAdvanced Electronic Materials, EarlyView.
During the ferromagnetic phase transition in inversion‐symmetry broken PrAlSi, both the energy/momentum positions and the number of Weyl points can be altered. These modifications induce a net chirality charge and affect the optical conductivity, positioning PrAlSi as a model system for controlling topological states through intrinsic magnetism ...
Kaipu Wang   +17 more
wiley   +1 more source

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