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6 papers · 2 filters
Verification and Validation of zero-point electron-phonon renormalization of the bandgap, mass enhancement, and spectral functions
Samuel Poncé, Jae-Mo Lihm, Cheol-Hwan Park
Verification and validation of methods and first-principles software are at the core of computational solid-state physics but are too rarely addressed. We compare four first-princi…
Plasmon-Phonon Hybridization in Doped Semiconductors from First Principles
Jae-Mo Lihm, Cheol-Hwan Park
Although plasmons and phonons are the collective excitations that govern the low-energy physics of doped semiconductors, their nonadiabatic hybridization and mutual screening have…
Probing Intrinsic Elastic Properties of Multilayer Graphene -- a New Mechanical Constant
Yun Hwangbo, Seong-jae Jeon, Young-Woo Son +1
We present measurements on in-plane Young's modulus and the Grüneisen parameter of multilayer graphene with varying number of layers, obtained through {\it in situ} bulge tests. Ac…
Room temperature quantum emitters in van der Waals α-MoO3
Jeonghan Lee, Haiyuan Wang, Keun-Yeol Park +6
Quantum emitters in solid-state materials are highly promising building blocks for quantum information processing and communication science. Recently, single-photon emission from v…
Giant piezoelectricity in group IV monochalcogenides with ferroelectric AA layer stacking
Seungjun Lee, Hyeong-Ryul Kim, Wei Jiang +2
The piezoelectricity of group IV monochalcogenides (MXs, with M = Ge, Sn and X = S, Se) has attracted much attention due to their substantially higher piezoelectric coefficients co…
Amorphous Boron Nitride as an Ultrathin Copper Diffusion Barrier for Advanced Interconnects
Onurcan Kaya, Hyeongjoon Kim, Byeongkyu Kim +7
This study focuses on amorphous boron nitride (-BN) as a novel diffusion barrier for advanced semiconductor technology, particularly addressing the critical challenge of cop…