Results 1 to 10 of about 467,022 (240)
State-dependent phonon-limited spin relaxation of nitrogen-vacancy centers
Physical Review Research, 2021 Understanding the limits to the spin coherence of the nitrogen-vacancy (NV) center in diamond is vital to realizing the full potential of this quantum system.
M. C. Cambria +5 more
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Dirac semimetal PdTe2 temperature-dependent quasiparticle dynamics and electron–phonon coupling
Results in Physics, 2021 Dirac semimetal PdTe2 single-crystal temperature-dependent ultrafast carrier and phonon dynamics were studied using ultrafast optical pump-probe spectroscopy. Quantitative analysis revealed a fast relaxation process (τf) occurring at a subpicosecond time
Shu-Yu Liu +17 more
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Ultrafast scattering dynamics of coherent phonons in Bi1−x Sb x in the Weyl semimetal phase
New Journal of Physics, 2021 We investigate ultrafast phonon dynamics in the Bi _1− _x Sb _x alloy system for various compositions x using a reflective femtosecond pump-probe technique. The coherent optical phonons corresponding to the A _1 _g local vibrational modes of Bi–Bi, Bi–Sb,
Yuta Komori +3 more
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Phonon-assisted relaxation between triplet and singlet states in a self-assembled double quantum dot
Scientific Reports, 2021 We study theoretically phonon-induced spin dynamics of two electrons confined in a self-assembled double quantum dot. We calculate the transition rates and time evolution of occupations for the spin-triplet and spin-singlet states.
Krzysztof Gawarecki, Paweł Machnikowski
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Results in Physics, 2023 Motivated by the recent experimental synthesis of a new hexagonal two-dimensional GeSe material, γ-GeSe, we systematically investigated the phonon transport properties of two-dimensional IV-VI compounds γ-GeS, γ-GeSe and γ-GeTe using first principles ...
Qiang Fan +5 more
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Phonon-assisted relaxation and decoherence of singlet-triplet qubits in Si/SiGe quantum dots [PDF]
Quantum, 2018 We study theoretically the phonon-induced relaxation and decoherence of spin states of two electrons in a lateral double quantum dot in a SiGe/Si/SiGe heterostructure.
Viktoriia Kornich +2 more
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Journal of Materiomics, 2023 It has now become recognized that the electron-phonon coupling (EPC) may play an important role in governing the phonon transport, especially for metallic and semiconducting systems at high carrier concentration. Here we focus on the Weyl semimetals TaAs
Shihao Han +4 more
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Estimation of phonon relaxation time for silicon by means of using the velocity autocorrelation function of atoms in molecular dynamics [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2019 Results of the ab initio molecular dynamics calculations of silicon crystals are presented by means of analysis of the velocity autocorrelation function and determination of mean phonon relaxation time.
B. Andriyevsky +6 more
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Size effect on the phonon heat conduction in semiconductor nanostructures [PDF]
مجلة التربية والعلم, 2010 Lattice thermal conductivity for silicon nanowires and quantum well are theoretically investigated in the temperature range from 2K to 300K. The modified Gallaway method for bulk crystal is used for calculating lattice thermal conductivity. All important
Abdurrahman Khaleel Suleiman +1 more
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Spin-phonon decoherence in solid-state paramagnetic defects from first principles
npj Computational Materials, 2023 Paramagnetic defects in diamond and hexagonal boron nitride possess a combination of spin and optical properties that make them prototypical solid-state qubits. Despite the coherence of these spin qubits being critically limited by spin-phonon relaxation,
Sourav Mondal, Alessandro Lunghi
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