Article
Chemistry, Multidisciplinary
Xue Dong, Zhipeng Wang, Qiang Yan, Haiwang Liu, Yuxiao Guo, Hong Cao, Jing Chen, Chao Xu
Summary: The spectroscopic study reveals the strong complexation between pentavalent neptunium and nitrate ion in an ionic liquid. A centrosymmetric 1:2 neptunium/nitrate complex is formed, which results in the significant change in the absorption band of neptunium.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Analytical
K. Suresh, K. Monisha, Aseefhali Bankapur, Subha Krishna Rao, Srinivas Mutalik, Sajan D. George
Summary: This study investigates the thermal sensitivity of nanoparticles at the single particle level using optical trapping technology in biological cells, and explores the role of surface passivation layers and plasmonic particles on thermal sensitivity. The results show that bare upconverting nanoparticles (UCNP) have greater thermal relative sensitivity than UCNP@SiO2 and UCN-P@SiO2@Au particles in an aqueous medium.
ANALYTICA CHIMICA ACTA
(2023)
Article
Physics, Multidisciplinary
Jing Liang, Dongyang Yang, Jingda Wu, Jerry I. Dadap, Kenji Watanabe, Takashi Taniguchi, Ziliang Ye
Summary: This study reveals the asymmetric interlayer coupling and spontaneous polarization between the conduction band and valence band in a 3R-MoS2 bilayer, uncovering the stacking-induced ferroelectricity in TMD homostructures and its implications for moire physics in 2D semiconductors.
Article
Materials Science, Multidisciplinary
Lakpa Tamang, Tutul Biswas
Summary: The alpha-T3 lattice undergoes a topological phase transition at alpha = 1/2, where the signs of both the Berry curvature and the orbital magnetic moment of the flat band change. The orbital magnetization varies linearly with the chemical potential in the forbidden gaps, and the change in Chern number is manifested by a change in the slope of the orbital magnetization.
Article
Physics, Multidisciplinary
Genwang Fan, Xiao-Long Chen, Peng Zou
Summary: In this theoretical study, we investigate the Higgs oscillation in a one-dimensional Raman-type spin-orbit-coupled Fermi superfluid using the time-dependent Bogoliubov-de Gennes equations. By linearly ramping or abruptly changing the effective Zeeman field in both the Bardeen-Cooper-Schrieffer state and the topological superfluid state, we find that the amplitude of the order parameter exhibits an oscillating behavior over time with two different frequencies. We further verify the existence of these two Higgs oscillations using a periodic ramp strategy with theoretically calculated driving frequency. Our predictions would be useful for further theoretical and experimental studies of these Higgs oscillations in spin-orbit-coupled systems.
FRONTIERS OF PHYSICS
(2022)
Article
Optics
Libo Liang, Yuqing Wang, Qi Huang, Qinpei Zheng, Xuzong Chen, Jiazhong Hu
Summary: Manipulating ultracold atoms in optical lattices is an optimal method to observe phase transitions of the useful Hubbard model. Bosonic atoms in this model undergo a phase transition from superfluids to Mott insulators by adjusting systematic parameters. However, in conventional setups, phase transitions occur over a wide range of parameters due to the Gaussian shape of the optical lattice lasers. To accurately detect the phase transition point in our lattice system, we use a blue-detuned laser to compensate for the local Gaussian geometry. By examining the change in visibility, we find a sudden jump point at a specific trap depth of the optical lattice, corresponding to the first appearance of Mott insulators in inhomogeneous systems. This provides a simple method to detect the phase transition point in such systems, and it is expected to be a useful tool for cold atom experiments.
Article
Multidisciplinary Sciences
Inaki Garcia-Elcano, Jaime Merino, Jorge Bravo-Abad, Alejandro Gonzalez-Tudela
Summary: Fermi arcs are surface states connecting topologically distinct Weyl points, which showcase the topological aspects of Weyl physics. We investigate the photonic counterpart of these states and demonstrate unique phenomena. We show how to image the Fermi arcs through the spontaneous decay of emitters coupled to the system's border. We also demonstrate the potential of Fermi arc surface states as a robust quantum link, enabling perfect quantum state transfer and the formation of highly entangled states.
Article
Materials Science, Multidisciplinary
Tom Lichtenberg, Maarten Beens, Menno H. Jansen, Bert Koopmans, Rembert A. Duine
Summary: This study investigates optically-induced spin currents using the excitation of THz spin-waves in noncollinear bilayer structures. The measurements show a correlation between the spin-wave phase and laser fluence, which can be explained by assuming the spin current is proportional to the time derivative of the magnetization. The results, supported by theoretical calculations and micromagnetic simulations, suggest that angular momentum transfer via the s-d interaction and ballistic interlayer transport are sufficient to explain spin-current generation and transport. Additionally, it is found that the damping-like optical spin transfer torque dominates THz spin-wave generation, indicating a shared microscopic origin for laser-induced demagnetization and spin-current generation.
Article
Physics, Condensed Matter
Orifjon K. Ganiev, Bakhrom Ya. Yavidov
Summary: This study investigated superfluid density and critical current density in cuprate superconductors using different pairing scenarios and extended d-wave gap symmetry. The calculated results were compared with experimental data, showing good quantitative agreement in all cases considered.
EUROPEAN PHYSICAL JOURNAL B
(2021)
Article
Physics, Multidisciplinary
Yanping Cai, Daniel G. Allman, Parth Sabharwal, Kevin C. Wright
Summary: Researchers have successfully generated persistent currents of ultracold fermionic atoms trapped in a ring, with lifetimes exceeding 10 seconds in the strongly interacting regime. These currents remain stable even in the BCS regime at low temperatures. By manipulating the interaction strength, they were able to switch the circulating BCS superfluid into the normal phase and observed that the probability of quantized superflow reappearing was not significantly affected by the time spent in the normal phase or the minimum interaction strength. This study demonstrates the potential use of ultracold fermionic atoms with tunable interactions in creating matter-wave circuits similar to those previously created with weakly interacting bosonic atoms.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
A. Farolfi, A. Zenesini, D. Trypogeorgos, C. Mordini, A. Gallemi, A. Roy, A. Recati, G. Lamporesi, G. Ferrari
Summary: The study successfully achieved effects similar to magnetic junctions using a coherently coupled mixture of ultracold bosonic gases, observing the formation of magnetic interfaces and waves. These results establish ultracold gases as a platform for studying far-from-equilibrium spin dynamics in regimes not easily accessible in solid-state systems.
Article
Chemistry, Multidisciplinary
Umberto Celano, Hai Zhong, Florin Ciubotaru, Laurentiu Stoleriu, Alexander Stark, Peter Rickhaus, Felipe Favaro de Oliveira, Mathieu Munsch, Paola Favia, Maxim Korytov, Patricia Van Marcke, Patrick Maletinsky, Christoph Adelmann, Paul van der Heide
Summary: In this study, nonperturbative field distribution mapping in ultra-scaled magnetic nanowires with diameters down to 6 nm was achieved using scanning nitrogen-vacancy magnetometry, enabling localized, minimally invasive magnetic imaging with sensitivity down to 3 μT Hz(-1/2). The imaging revealed the presence of weak magnetic inhomogeneities inside in-plane magnetized nanowires, largely undetectable with standard metrology. The strong magnetic field confinement in the nanowires allowed for the study of the interaction between the stray magnetic field and the nitrogen-vacancy sensor, clarifying the formation mechanisms for technologically relevant magnetic nanostructures.
Article
Chemistry, Multidisciplinary
Chengyuan Yu, Xiaodong Wang, Cai-Xin Zhao, Shun Yang, Jiaan Gan, Zhuo Wang, Zhanqi Cao, Da-Hui Qu
Summary: A bistable [2]rotaxane with a conformation-adaptive macrocycle was synthesized and utilized to probe the molecular shuttling motion. The fluorescence intensity was controlled by the modulation of intramolecular photo-induced electron transfer.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Jeonghyeon Kim, Olivier J. F. Martin
Summary: Single-particle tracking and optical tweezers are powerful techniques for studying microscopic processes, providing insights into the interactions between microscopic particles and surrounding molecules. This article demonstrates their application in studying molecular interactions at solid-liquid interfaces, specifically investigating surfactant behaviors at the water-glass interface by tracking optically trapped gold nanoparticles.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Vahagn Mkhitaryan, Eduardo J. C. Dias, Fabrizio Carbone, F. Javier Garcia de Abajo
Summary: Recent advances in ultrafast electron microscopy have enabled the combination of optical pumping of nanostructures and electron beam probing with sub-Angstrom and femtosecond spatiotemporal resolution. This technique is predicted to reveal the rich out-of-equilibrium dynamics of plasmon excitations in graphene and graphite samples. By measuring angle-resolved, energy-integrated inelastic electron scattering, it is possible to track the temporal evolution of plasmons in these structures and provide momentum-resolved mode identification.
Article
Physics, Multidisciplinary
Michele Buzzi, Gregor Jotzu, Andrea Cavalleri, J. Ignacio Cirac, Eugene A. Demler, Bertrand Halperin, Mikhail D. Lukin, Tao Shi, Yao Wang, Daniel Podolsky
Summary: The study introduces a novel nonequilibrium phenomenon where a prompt quench from a metal to a transient superconducting state induces large oscillations of the order parameter amplitude. The oscillating mode is suggested to act as a source of parametric amplification of the incident radiation, with experimental results on optically driven K3C60 supporting these predictions. The effect diminishes when the excitation onset surpasses the Higgs-mode period, presenting new possibilities for inducing nonlinear optical effects using collective modes in many-body systems.
Article
Chemistry, Multidisciplinary
Sean M. Walker, Tarun Patel, Junichi Okamoto, Deler Langenberg, E. Annelise Bergeron, Jingjing Gao, Xuan Luo, Wenjian Lu, Yuping Sun, Adam W. Tsen, Jonathan Baugh
Summary: This study investigates the properties of ultrathin 1T-TaS2 and reveals the presence of nonequilibrium phases consisting of intertwined NC-like and C-like domains. The relationship between electronic inhomogeneity and bulk resistivity in ultrathin 1T-TaS2 is also explored.
Article
Multidisciplinary Sciences
Jacqueline Bloch, Andrea Cavalleri, Victor Galitski, Mohammad Hafezi, Angel Rubio
Summary: A goal of modern condensed-matter physics is to search for states of matter with emergent properties and desirable functionalities. By controlling light-matter interactions, it is possible to manipulate and synthesize strongly correlated quantum matter, leading to phenomena like photon-mediated superconductivity, cavity fractional quantum Hall physics, and optically driven topological phenomena.
Article
Physics, Multidisciplinary
M. Henstridge, M. Foerst, E. Rowe, M. Fechner, A. Cavalleri
Summary: Nonlinear phononics is a method for creating transient structural changes in solids. This study extends nonlinear phononics to propagating polaritons, separating the functional response from the optical drive.
Article
Multidisciplinary Sciences
D. Nicoletti, M. Buzzi, M. Fechner, P. E. Dolgirev, M. H. Michael, J. B. Curtis, E. Demler, G. D. Gu, A. Cavalleri
Summary: Research finds that coherent terahertz radiation can be emitted by surface Josephson plasmons when there are incommensurate or fluctuating charge stripes in cuprates.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
A. S. Disa, J. Curtis, M. Fechner, A. Liu, A. von Hoegen, M. Foerst, T. F. Nova, P. Narang, A. Maljuk, A. V. Boris, B. Keimer, A. Cavalleri
Summary: Lattice manipulation through optical methods can enhance and stabilize high-temperature ferromagnetism, expanding the potential applications of YTiO3.
Review
Entomology
Mariana F. Lindner, Leonardo T. Goncalves, Filipe M. Bianchi, Augusto Ferrari, Adriano Cavalleri
Summary: DNA Barcoding is a significant tool in various scientific disciplines, and Barcode of Life Data System (BOLD) is the largest database for the species' sequences. This study provides the first comprehensive analysis of available information in BOLD for the insect order Thysanoptera. The research reveals that only a small percentage of the valid thrips species are represented in BOLD, indicating the need for improvement in data quality.
BULLETIN OF ENTOMOLOGICAL RESEARCH
(2023)
Article
Physics, Multidisciplinary
E. Rowe, B. Yuan, M. Buzzi, G. Jotzu, Y. Zhu, M. Fechner, M. Foerst, B. Liu, D. Pontiroli, M. Ricco, A. Cavalleri
Summary: Photo-excitation at terahertz and mid-infrared frequencies has been proven to be an effective method for manipulating functionalities in quantum materials. Researchers have observed a metastable zero-resistance phase in K3C60 and discovered the microscopic mechanism underlying photo-induced superconductivity.
Article
Multidisciplinary Sciences
E. Wang, J. D. Adelinia, M. Chavez-Cervantes, T. Matsuyama, M. Fechner, M. Buzzi, G. Meier, A. Cavalleri
Summary: This article reports on ultrafast transport measurements in photo-excited K3C60, which exhibit characteristic nonlinear current-voltage responses indicating photo-induced granular superconductivity. This study provides valuable new information on the nature of the light-induced superconducting-like state and highlights the potential integration of non-equilibrium superconductivity into optoelectronic platforms for high-speed device applications.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Eric J. McShane, Partha P. Paul, Tanvir R. Tanim, Chuntian Cao, Hans-Georg Steinruck, Vivek Thampy, Stephen E. Trask, Alison R. Dunlop, Andrew N. Jansen, Eric J. Dufek, Michael F. Toney, Johanna Nelson Weker, Bryan D. McCloskey
Summary: By combining multiple characterization techniques, this study identified specific degradation mechanisms occurring during extended fast charge cycling, including lithium plating, Li2C2, and solid carbonate SEI species, providing a more holistic understanding of degradative phenomena during fast charging.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
Junichi Okamoto, Sajad Mirmohammadi
Summary: We investigate the microscopic dynamics of photoinduced phase transitions in tetrathiafulvalene-p-chloranil using exact diagonalization. We discover three ground-state phases, namely the neutral phase, ionic phase, and dipole phase. The transitions between these phases are induced by short optical pulses and result in changes in electronic order parameters and lattice displacement. Spectroscopic analysis reveals the generation of coherent charge-transfer strings and the crucial roles of excited states and metastable ground state in the ultrafast dynamics.
Article
Materials Science, Multidisciplinary
D. Fu, D. Nicoletti, M. Fechner, M. Buzzi, G. D. Gu, A. Cavalleri
Summary: Interlayer transport in high-TC cuprates is mediated by superconducting tunneling, resulting in highly nonlinear terahertz frequency optical response. Surprisingly, nonlinearities have also been observed in certain doping values above TC, indicating superfluidity in the stripe phase. An electric-field-induced second harmonic method is used to study the voltage anomalies associated with Josephson phase slips in La2-xBaxCuO4 (LBCO) both below and above TC, revealing a regime of nonlinear transport with features of fluctuating stripes and superconducting phase dynamics.
Article
Physics, Multidisciplinary
Sebastian Stumper, Michael Thoss, Junichi Okamoto
Summary: In this study, we investigate dynamical quantum phase transitions (DQPTs) in the extended Bose-Hubbard model. We demonstrate that interaction-driven DQPTs can occur after quenches between two topologically trivial insulating phases, which has previously only been studied between gapped and gapless phases. We define a new set of order parameters and find a close connection between DQPTs and these newly defined order parameters for both types of quenches. In addition, we examine the timescales of DQPTs and reveal different types of power laws for the topological and interaction-driven cases.
PHYSICAL REVIEW RESEARCH
(2022)
