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相关论文: Phonon Effects on Spin-Charge Separation in One Di…

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An effective spin relaxation mechanism that leads to electron spin decoherence in a quantum dot is proposed. In contrast to the common calculations of spin-flip transitions between the Kramers doublets, we take into account a process of…

材料科学 · 物理学 2009-11-10 Y. G. Semenov , K. W. Kim

We study the effect of spin-phonon coupling in small magnetic clusters, concentrating on a S=1/2 ring of 4 spins coupled antiferromagnetically. If the phonons are treated as classical variables, there is a critical value of the spin-phonon…

强关联电子 · 物理学 2009-11-11 M. Elhajal , F. Mila

A variational solution of the coupled electron-phonon Boltzmann equations is used to calculate the phonon drag contribution to the thermopower in a 1-D system. A simple formula is derived for the temperature dependence of the phonon drag in…

介观与纳米尺度物理 · 物理学 2007-05-23 V. W. Scarola , G. D. Mahan

We predict a spin pure dephasing channel in electron relaxation between states with unequal Zeeman splittings, exemplified by a spin-preserving electron tunneling between quantum dots in a magnetic field. The dephasing is caused by a…

介观与纳米尺度物理 · 物理学 2018-08-07 Michał Gawełczyk , Mateusz Krzykowski , Krzysztof Gawarecki , Paweł Machnikowski

We report the first measurement of 1/f type noise associated with electronic spin transport, using single layer graphene as a prototypical material with a large and tunable Hooge parameter. We identify the presence of two contributions to…

介观与纳米尺度物理 · 物理学 2017-02-09 S. Omar , M. H. D. Guimarães , A. Kaverzin , B. J. van Wees , I. J. Vera-Marun

A time-dependent inelastic electron transport theory for strong electron-phonon interaction is established via the equations of motion method combined with the small polaron transformation. In this work, the dissipation via electron-phonon…

介观与纳米尺度物理 · 物理学 2015-05-21 Yu Zhang , ChiYung Yam , GuanHua Chen

We study the variations of electron-phonon coupling and their spectroscopic consequences in response to sliding of two layers in bilayer graphene using first-principles calculations and a model Hamiltonian. Our study shows that the long…

介观与纳米尺度物理 · 物理学 2013-07-25 Seon-Myeong Choi , Seung-Hoon Jhi , Young-Woo Son

In this work, the effect of electron-phonon (e-ph) coupling on both electron and phonon transport of metals is investigated via first principles calculations. A Monte-Carlo (MC) approach for solving the coupled electron-phonon Boltzmann…

材料科学 · 物理学 2024-02-14 Jie Peng , W. Ryan Deskins , Maria Helena Braga , Anter El-Azab

The magnon-phonon coupling has received growing attention in recent years due to its central role in spin caloritronics and the emerging field of acoustic spintronics. At resonance, this magnetoelastic interaction drives the formation of…

数学物理 · 物理学 2021-11-02 Tor Jonas Sjöstrand , Ferdi Aryasetiawan

A thorough understanding of the microscopic picture of heat conduction in solids is critical to a broad range of applications, from thermal management of microelectronics to more efficient thermoelectric materials. The transport properties…

材料科学 · 物理学 2021-02-04 Yujie Quan , Shengying Yue , Bolin Liao

First-principles calculations enable accurate predictions of electronic interactions and dynamics. However, computing the electron spin dynamics remains challenging. The spin-orbit interaction causes various dynamical phenomena that couple…

材料科学 · 物理学 2022-11-04 Jinsoo Park , Yao Luo , Jin-Jian Zhou , Marco Bernardi

We present results for the spin conductance of the one dimensional spin-1/2 Heisenberg and XY model coupled to phonons. We apply an approach based on the Stochastic Series Expansion (Quantum Monte Carlo) method to evaluate the conductance…

强关联电子 · 物理学 2009-11-11 Kim Louis , Xenophon Zotos

We investigate the temperature dependence of photon coherence properties through two photon interference (TPI) measurements from a single QD under resonant excitation. We show that the loss of indistinguishability is only related to the…

We study the effect of phonons on a proposed scheme for the direct measurement of two-electron spin states in a double quantum dot by monitoring the the noise of the current flowing through a quantum point contact coupled to one of the…

量子物理 · 物理学 2015-04-01 Katarzyna Roszak , Łukasz Marcinowski , Paweł Machnikowski

We study electron-phonon interaction induced decoherence between two-electron singlet and triplet states in a semiconductor double quantum dot using a spin-boson model. We investigate the onset and time evolution of this dephasing, and…

介观与纳米尺度物理 · 物理学 2015-05-20 Xuedong Hu

MnV$_2$O$_4$ in the spinel structure is known to exhibit coupled orbital and spin ordering, and its Raman spectra show interesting anomalies in its low-temperature phase. With a goal to explain this behavior involving coupled spins and…

材料科学 · 物理学 2020-05-27 Dibyendu Dey , T. Maitra , U. V. Waghmare , A. Taraphder

Nowadays, the interaction between phonon and magnon subsystems of a magnetic medium is a hot topic of research. The complexity of phonon and magnon spectra, the existence of both bulk and surface modes, the quantization effects, and the…

介观与纳米尺度物理 · 物理学 2023-11-01 D. A. Bozhko , V. I. Vasyuchka , A. V. Chumak , A. A. Serga

Raman scattering in the spin-crossover system [Fe(pmd)(H2O){Au(CN)2}2]*H2O reveals a complex three-phase spin-state transition in contrast to earlier observations in magnetization measurements. We observe different spin state phases as…

We study all of the leading-order contributions to spin relaxation of \textit{conduction} electrons in silicon due to the electron-phonon interaction. Using group theory, $k\cdot p$ perturbation method and rigid-ion model, we derive an…

材料科学 · 物理学 2013-05-21 Yang Song , Hanan Dery

Gate-modulated low-temperature Raman spectra reveal that the electric field effect (EFE), pervasive in contemporary electronics, has marked impacts on long wavelength optical phonons of graphene. The EFE in this two dimensional honeycomb…

介观与纳米尺度物理 · 物理学 2009-11-11 Jun Yan , Yuanbo Zhang , Philip Kim , Aron Pinczuk