Article
Physics, Mathematical
Peter J. Forrester
Summary: The first work of Dyson on random matrix theory is reviewed, focusing on the exact solution for type I chain with gamma distribution disorder variables. The exact solution exhibits a singularity in the density of states around the origin, which is proven to be universal for one-dimensional tight binding models with off diagonal disorder. Additionally, a connection between the exact solution and a tridiagonal formalism of anti-symmetric Gaussian beta-ensembles with beta proportional to 1/N is established.
JOURNAL OF MATHEMATICAL PHYSICS
(2021)
Article
Chemistry, Physical
Lijin Wang, Grzegorz Szamel, Elijah Flenner
Summary: The density of states for two-dimensional glasses exhibits different system-size scaling depending on the number of particles. For systems with fewer than 100 particles, the density of states scales with the system size as if all the modes were plane-wave-like. However, for systems with more than 100 particles, the cumulative density of states below the first transverse sound mode frequency shows a different system-size dependence, suggesting quasi-localized modes. In addition, the cumulative density of states scales with the frequency as a power law with an exponent that leads to β = 3.5 for the density of states.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Multidisciplinary Sciences
Sae Hee Ryu, Minjae Huh, Do Yun Park, Chris Jozwiak, Eli Rotenberg, Aaron Bostwick, Keun Su Kim
Summary: The research reports the observation of an unusual band structure at the interface between a crystalline solid (black phosphorus) and disordered alkali-metal dopants. It shows that the depth of the potential tuned by different types of disordered alkali metals leads to the classification of the pseudogap of p-wave and d-wave resonance. These findings may provide insights into the spectrum of various crystalline insulators doped by disordered dopants.
Article
Materials Science, Multidisciplinary
Eyal Walach, Efrat Shimshoni
Summary: The research reveals that interactions and disorder in low-dimensional superconductors can lead to the formation of multiple quantum phases at a quantum critical point, with a key feature being the perfect Z(2) symmetry. The study of weak disorder on a two-leg Josephson ladder model has identified at least one intermediate phase between a full-fledged superconductor and a disorder-dominated insulator, with the presence of two distinct mixed phases.
Article
Materials Science, Ceramics
Heng Kang, Yanhui Zhang, Xiaoqian Lu, Shaopeng Pan, Ji Wang, Shidong Feng, Limin Wang
Summary: The intensity and origin of boson peaks are influenced by the vibrational amplitudes, anisotropy, and local geometric distortion.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Analytical
Dong Qin, Jiezhi Chen, Nianduan Lu
Summary: In this study, a novel theory of density of states (DOS) for disordered organic semiconductors based on the frontier orbital theory and probability statistics is proposed. The proposed DOS is verified by comparing with other alternatives and experimental data, and the calculated mobility using the proposed DOS is found to be closer to experimental data than traditional DOS. A detailed method for choosing the DOS parameter is provided for better utilization of the proposed DOS. The prediction of the DOS parameters and their physical meaning are also discussed and verified by experimental data. This work presents a new attempt to combine probabilistic theory with physical theory regarding DOS in disordered organic semiconductors, and is of great significance for further investigation of DOS properties.
Article
Physics, Fluids & Plasmas
Giampaolo Folena, Giulio Biroli, Patrick Charbonneau, Yi Hu, Francesco Zamponi
Summary: This study investigates mean-field models of glasses using the replica method, revealing the fluctuation characteristics under thermodynamic limits. It analyzes the heterogeneous fluctuations between different states and achieves good quantitative agreement through numerical simulations.
Article
Multidisciplinary Sciences
Zhetao Jia, Matteo Secli, Alexander Avdoshkin, Walid Redjem, Elizabeth Dresselhaus, Joel Moore, Boubacar Kante
Summary: Complex networks are crucial in understanding phenomena like collective behavior of spins, neural networks, power grids, and disease spread. Recent studies have used topological phenomena in these networks to maintain system response in the presence of disorder. This article proposes and demonstrates topological structurally disordered systems with enhanced nonlinear phenomena in the topological channels. The construction of the graph and its dynamics significantly increase the rate of topologically protected photon pair generation. Disordered nonlinear topological graphs can enable advanced quantum interconnects, efficient nonlinear sources, and light-based information processing for artificial intelligence.
Article
Chemistry, Physical
Ushnish Rana, Clifford P. Brangwynne, Athanassios Z. Panagiotopoulos
Summary: The study on liquid-liquid phase separation (LLPS) of proteins through Monte Carlo simulations reveals that LLPS is influenced by factors such as sequence distribution, sticker fraction, and chain length. The normalized sequence charge decoration (SCD) parameter can predict whether a protein will undergo macroscopic phase separation or finite aggregation. Results show that at sufficiently long chain lengths, most sequences are likely to undergo phase separation.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
Adway Kumar Das, Anandamohan Ghosh, Ivan M. Khaymovich
Summary: In this study, we introduce a new discrete model that exhibits both localized and extended states without forming a mobility edge. By locally mapping the model, we confirm the coexistence of localized and extended states and analytically estimate the fractal dimensions of the extended states.
PHYSICAL REVIEW LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Tilen Cadez, Yeongjun Kim, Alexei Andreanov, Sergej Flach
Summary: We study the effect of infinitesimal onsite disorder on d-dimensional all bands flat lattices, finding that localization persists for any choice of local unitaries in d = 1 and d = 2, and the localization length can be maximized for specific values of theta i. However, in d = 3, we identify a nonperturbative metal-insulator transition upon varying all bands' flat manifold angles.
Article
Engineering, Electrical & Electronic
Dong Qin, Kaifei Chen, Jiezhi Chen, Nianduan Lu
Summary: Accurate density of states is essential for understanding charge carrier transport properties. The unified distribution form based on the Poisson flow allows for better discussion of charge carrier transport, improving rationality, and also introduces entropy analysis of disorder parameters for the first time.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Materials Science, Multidisciplinary
Ndeye Saly Ndiaye, Olivier Simonetti, Thien-Phap Nguyen, Louis Giraudet
Summary: This study proposes an adaptation of the SRH model for disordered organic semiconductors to extract trap parameters, with validation through QDLTS spectra. The findings suggest that the relationship between trap activation energy and charge transients deviates from traditional patterns when considering Gaussian trap distributions.
ORGANIC ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Serafima Guseva, Vincent Schnapka, Wiktor Adamski, Damien Maurin, Rob W. H. Ruigrok, Nicola Salvi, Martin Blackledge
Summary: The liquid-liquid phase separation of flexible biomolecules is a common phenomenon in the formation of membraneless organelles. Nuclear magnetic resonance spectroscopy and molecular dynamics simulations were used to study the dynamics of an intrinsically disordered protein in dilute and dense phases. The results showed that the dynamics of the protein were significantly slowed down and chain-like motions dominated in the dense phase.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Miles Martinati, Wim Wenseleers, Lei Shi, Saied Md Pratik, Philip Rohringer, Weili Cui, Thomas Pichler, Veaceslav Coropceanu, Jean-Luc Bredas, Sofie Cambre
Summary: In this study, the excited states of ultralong carbon chains encapsulated inside double-walled carbon nanotubes were investigated using wavelength-dependent resonant Raman spectroscopy. The study identified vibronic series of two different electronic states.
Article
Physics, Condensed Matter
John Russo, Flavio Romano, Lukas Kroc, Francesco Sciortino, Lorenzo Rovigatti, Petr Sulc
Summary: This study proposes a general framework for solving inverse self-assembly problems and successfully demonstrates the design and numerical simulation of a specific cubic diamond structure. The approach uses patchy particles as building blocks and transforms the problem into a Boolean satisfiability problem to determine the interaction rules between patches.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Review
Physics, Multidisciplinary
John Russo, Fabio Leoni, Fausto Martelli, Francesco Sciortino
Summary: This study focuses on the connections between empty liquids, patchy particles, and water. It highlights the modeling principles that allow an empty liquid to behave like water, including factors such as the appearance of thermodynamic and dynamic anomalies, the possibility of liquid-liquid phase transitions, and the crystallization of open crystalline structures.
REPORTS ON PROGRESS IN PHYSICS
(2022)
Article
Chemistry, Physical
Jiting Tian, Walter Kob, Jean-Louis Barrat
Summary: Quasi-2D colloidal suspensions in a slit geometry exhibit faster diffusion and relaxation compared to their 2D counterparts due to the additional vertical space that allows overlapping of particles in the projected trajectories. The difference in dynamics can be explained by characterizing the systems using a suitable structural quantity instead of surface density. These results have practical implications for 2D colloidal experiments and provide insights into the 3D-to-2D crossover in glass-forming systems.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Physics, Multidisciplinary
Lorenzo Rovigatti, Francesco Sciortino
Summary: Single-chain nanoparticles are polymeric objects with special structures, and the phase transition can be controlled by designing the arrangement of reactive monomers. The study of this structure is of great significance for controlling polymer bonding.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Zhen Zhang, Simona Ispas, Walter Kob
Summary: Large-scale simulations have shown that sodium-silicate glasses exhibit nanoductility and composition-dependent crack velocity during dynamic fracture. The local properties of these glasses, including composition, structure, and mechanical properties, display heterogeneity in space and their correlation provides insights into the deformation and fracture behavior. Local heating in the crack tip allows relaxation of the glass structure.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Chemistry, Physical
E. Lattuada, T. Pietrangeli, F. Sciortino
Summary: In this experiment, we investigated the equilibrium gel formation in a binary mixture of DNA nanostars. We found that two interpenetrating unconnected gels formed in the sample on cooling, with each gel forming at a temperature controlled by the selected binding DNA sequence. The dynamic light scattering correlation functions showed a non-common three-step relaxation process.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Valerio Sorichetti, Andrea Ninarello, Jose Ruiz-Franco, Virginie Hugouvieux, Emanuela Zaccarelli, Cristian Micheletti, Walter Kob, Lorenzo Rovigatti
Summary: We used simulations to self-assemble polymer networks with a mixture of bivalent and tri- or tetravalent patchy particles, resulting in an exponential strand length distribution similar to experimental cross-linked systems. The fractal structure of the network depends on the assembly number density, but systems with the same mean valence and assembly density have the same structural properties. We also examined the dynamics of long strands using the tube model and found a relation between the localization lengths and shear modulus.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Riccardo Foffi, Francesco Sciortino
Summary: Multiple numerical studies have confirmed the existence of a liquid-liquid critical point and proposed various structural indicators to describe the associated phase transition. Analyzing simulations of near-critical supercooled water, it is found that most indicators are strongly correlated to density, suggesting a tight coupling between apparently distinct structural degrees of freedom near the critical point.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Physics, Multidisciplinary
Zhikun Zeng, Shuyang Zhang, Xu Zheng, Chengjie Xia, Walter Kob, Ye Yuan, Yujie Wang
Summary: By analyzing particle trajectory data, we have identified two types of effective temperatures in a cyclically sheared granular system. These temperatures, obtained from different methods, show consistent results and provide experimental evidence for the validity of the concept of effective temperature in driven frictional granular systems.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Misaki Ozawa, Yasutaka Iwashita, Walter Kob, Francesco Zamponi
Summary: A recent breakthrough in glass science involves the synthesis of ultrastable glasses using physical vapor deposition techniques. These glasses exhibit increased stability in terms of thermodynamics, kinetics, and mechanics, with significant implications for both fundamental research and practical applications. However, the current deposition technique is limited to specific types of glass-formers and can only produce thin film samples. In this study, a novel approach using random particle bonding is proposed to generate ultrastable glassy configurations in bulk materials. Computer simulations show the effectiveness of this method, which can be applied to various molecular and soft matter systems, offering great potential for the design of a wide range of ultrastable glasses.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Camilla Beneduce, Diogo E. P. Pinto, Petr Sulc, Francesco Sciortino, John Russo
Summary: This study investigates the nucleation process of a binary mixture of patchy particles designed to nucleate into a diamond lattice. By combining Gibbs-ensemble simulations and direct nucleation simulations, the role of the liquid-gas metastable phase diagram on the nucleation process is revealed. The strongest enhancement of crystallization is found to occur at an azeotropic point with the same stoichiometric composition of the crystal.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Editorial Material
Chemistry, Physical
Michele Ceriotti, Lasse Jensen, David E. Manolopoulos, Todd Martinez, David R. Reichman, Francesco Sciortino, C. David Sherrill, Qiang Shi, Carlos Vega, Lai-Sheng Wang, Emily A. Weiss, Xiaoyang Zhu, Jenny Stein, Tianquan Lian
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Francesco Guidarelli Mattioli, Francesco Sciortino, John Russo
Summary: We propose a new neural network potential that incorporates atomic fingerprints based on both two- and three-body contributions. These fingerprints probe distances and local orientational order. The training process of the proposed potential is simplified by using a small set of tunable parameters for the fingerprints. This approach improves the overall accuracy of the network representation and successfully reproduces the behavior of the mW model of water.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Francesco Guidarelli Mattioli, Francesco Sciortino, John Russo
Summary: Neural network potentials (NNPs) are increasingly used to study long time scale processes, such as crystal nucleation. It is unclear whether NN potentials trained on equilibrium liquid states can accurately describe nucleation processes. In this study, a NNP trained on a classical three-body potential for water accurately reproduces nucleation rates and free energy barriers, supporting the use of NNPs for studying nucleation events.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Multidisciplinary Sciences
Diogo E. P. Pinto, Petr Sulc, Francesco Sciortino, John Russo
Summary: The control over self-assembly of complex structures, particularly at the colloidal scale, has been a significant challenge in material science. The formation of amorphous aggregates often disrupts the desired assembly pathway. In this study, we investigate the self-assembly problem of three Archimedean shells using patchy particles as model building blocks. By recasting the assembly problem as a Boolean satisfiability problem, we find effective designs and selectively suppress unwanted structures.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)