Article
Multidisciplinary Sciences
John Sous, Benedikt Kloss, Dante M. Kennes, David R. Reichman, Andrew J. Millis
Summary: By simulating the non-equilibrium dynamics of a metal driven by light pumping, researchers found rapid loss of spatial coherence leading to emergent disorder in the dynamics, which dominates electronic behavior. This study sheds light on correlation dynamics in vibrationally coupled electrons and highlights the significance of phase coherence evolution.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Rizwan Nabi, Jakob K. Staab, Andrea Mattioni, Jon G. C. Kragskow, Daniel Reta, Jonathan M. Skelton, Nicholas F. Chilton
Summary: Molecular materials are important for the development of optoelectronic and quantum technologies, and the study of spin-phonon coupling is crucial for understanding energy transfer processes and spin dynamics. Ab initio methods can accurately calculate spin-phonon coupling and spin dynamics in molecular solids, as demonstrated in this study.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
S. Djurdjic Mijin, A. Solajic, J. Pesic, Y. Liu, C. Petrovic, M. Bockstedte, A. Bonanni, Z. V. Popovic, N. Lazarevic
Summary: The vibrational properties of ferrimagnetic Mn3Si2Te6 single crystals are studied using Raman spectroscopy and density functional theory calculations. Eighteen Raman-active modes are identified, with 14 assigned based on trigonal symmetry. Four additional peaks following A1g selection rules are attributed to overtones. The temperature evolution of the A51g mode self-energy suggests competing short-range magnetic correlations in Mn3Si2Te6 that significantly impact the spin-phonon interaction. This research provides comprehensive insight into lattice properties, explores their temperature dependence, and provides evidence for competing short-range magnetic phases in Mn3Si2Te6.
Article
Chemistry, Physical
Clemens Vittmann, James Lim, Dario Tamascelli, Susana F. Huelga, Martin B. Plenio
Summary: This study examines the role of delocalized phonon modes in electron transport in chiral structures and demonstrates that spin selectivity can originate from spin-dependent energy and momentum conservation in electron-phonon scattering events. The degree of spin polarization, however, depends on environmental factors and the presence of external driving fields. The parametric dependence allows for experimentally testable predictions of the model.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Physics, Applied
M. M. Glazov, Z. A. Iakovlev, S. Refaely-Abramson
Summary: This study theoretically investigates the contribution of quantum effects to the exciton diffusion coefficient in atomically thin crystals. The weak localization caused by the interference of excitonic wavefunctions on closed loop trajectories plays a significant role, even when the excitons are scattered by long-wavelength acoustic phonons. The study identifies the regimes where the weak localization effect is particularly pronounced and briefly addresses the role of free charge carriers in exciton quantum transport and higher-order weak localization effects within the self-consistent theory of localization.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Martin Amoza, Lindley Maxwell, Nuria Aliaga-Alcalde, Silvia Gomez-Coca, Eliseo Ruiz
Summary: The study reveals the spin dynamic properties of non-substituted ferrocenium complexes, showing field-induced single-molecule magnet behavior for ferrocenium in solution, while cobaltocene lacks slow spin relaxation in both powder and solution. Quantum mechanical calculations and analysis of spin relaxation mechanisms suggest the importance of quantum tunnelling, Raman, direct and local-mode mechanisms, which are influenced by temperature and external field conditions. Additionally, the spin-phonon coupling constants for vibrational modes indicate that the first vibrational mode plays a crucial role in spin relaxation at low temperatures, with higher spin-phonon coupling modes not being populated under such conditions.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Physics, Multidisciplinary
Jinsoo Park, Jin-Jian Zhou, Yao Luo, Marco Bernardi
Summary: Developing a microscopic understanding of spin decoherence is crucial for advancing quantum technologies. In this study, the authors present a computational approach that unifies the modeling of two main sources of phonon-induced spin decoherence and enables accurate predictions of spin relaxation and precession in semiconductors. Their findings highlight the significant role of vertex correction in the electron spin dynamics in solids, providing insights for the development of spin-based quantum technologies.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Qiyang Sun, Songrui Hou, Bin Wei, Yaokun Su, Victor Ortiz, Bo Sun, Jiao Y. Y. Lin, Hillary Smith, Sergey Danilkin, Douglas L. Abernathy, Richard Wilson, Chen Li
Summary: Nickel (II) oxide is a potential material for spintronic and spin-caloritronic applications at room temperature. This study investigates the relationship between spin-phonon interactions and thermal transport in nickel oxide using inelastic neutron scattering, time-domain thermoreflectance measurements, and atomistic thermal transport calculations. The results reveal the importance of spin-phonon interactions on lattice thermal transport and provide insights into the engineering of antiferromagnetic spintronic and spin-caloritronic materials.
MATERIALS TODAY PHYSICS
(2023)
Article
Computer Science, Interdisciplinary Applications
Yulong Shen, Nengji Zhou
Summary: With the use of a generalized trial wave function, this study accurately determines the transition points and critical exponents in the sub-Ohmic spin-boson model and confirms the quantum-to-classical correspondence. Mean-field and non-mean-field critical behaviors are found in deep and shallow sub-Ohmic regimes, respectively.
COMPUTER PHYSICS COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
Longkai Lu, Dengke Ma, Ming Zhong, Lifa Zhang
Summary: Temperature oscillations are observed in one-dimensional superlattices due to the localization of high frequency phonons.
NEW JOURNAL OF PHYSICS
(2022)
Article
Physics, Applied
K. Park, J. Kim, S. Choi, S. Fan, C. Kim, D. G. Oh, N. Lee, S. -W Cheong, V. Kiryukhin, Y. J. Choi, D. Vanderbilt, J. H. Lee, J. L. Musfeldt
Summary: To explore the effects of spin-orbit coupling on spin-phonon interactions, we studied the infrared vibrational properties of chemically similar mixed metal oxides. Our findings showed significant shifts in the Co2+ shearing mode near 150 cm(-1) across the magnetic ordering temperature. These shifts were especially large in relative terms. The spin-phonon coupling constants were derived from interlayer exchange interactions and contained competing antiferromagnetic and ferromagnetic contributions.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Te-Huan Liu, Jiawei Zhou, Qian Xu, Xin Qian, Bai Song, Ronggui Yang
Summary: The study shows that long-range electron-phonon interaction can significantly suppress thermal conductivity in certain polar semiconductors by scattering acoustic phonons. The breaking of centrosymmetry has different effects on phonon transport in different crystal structures.
MATERIALS TODAY PHYSICS
(2022)
Article
Physics, Multidisciplinary
J. D. Watts, J. T. Batley, N. A. Rabideau, J. P. Hoch, L. O'Brien, P. A. Crowell, C. Leighton
Summary: The Elliott-Yafet theory of spin relaxation in nonmagnetic metals, which predicts the proportionality between spin and momentum relaxation times for scattering centers such as phonons, is tested in Al nanowires. The study reveals a significant finite-size effect on the Elliott-Yafet proportionality constant for phonon scattering, attributed to strong phonon-induced spin relaxation at surfaces and interfaces, particularly driven by enhanced spin-orbit coupling.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Abhishek Kumar, Premala Chandra, Pavel A. Volkov
Summary: We study the interaction between collective electronic and lattice modes in polar metals. We find that in the presence of an applied magnetic field, a weak spin-orbit coupling induces the emergence of electronic collective modes. These modes can be observed through optical spectroscopy experiments.
Article
Materials Science, Multidisciplinary
Jinsoo Park, Yao Luo, Jin-Jian Zhou, Marco Bernardi
Summary: This work presents a rigorous framework for studying phonon-induced spin relaxation and decoherence by computing the spin-spin correlation function and its vertex corrections due to electron-phonon interactions. The method is applied to GaAs spin relaxation and is shown to unify different spin decoherence mechanisms. It enables quantitative studies of spin relaxation, decoherence, and transport in various materials and devices.