2360 papers
Explore the fascinating intersection where quantum materials meet the complexity of everyday environments in the Cond-Mat — Mes-Hall section. This field investigates how tiny particles behave when caught between the orderly world of single atoms and the chaotic nature of bulk matter, revealing the hidden rules that govern electricity, magnetism, and heat in novel substances.
Gist.Science brings these cutting-edge discoveries to you directly from arXiv, the leading repository for physics preprints. We process every new submission in this category as soon as it appears, offering both straightforward, plain-language explanations and deep technical summaries to help researchers and curious minds alike grasp the latest breakthroughs without getting lost in dense equations.
Below are the most recent papers in this dynamic area of condensed matter physics, ready for you to explore.
This paper investigates the spectral fluctuations of a single charge-tunable GaAs quantum dot using time-resolved resonance fluorescence and spin noise spectroscopy to reveal rare, sub-linewidth Stark shifts caused by complex impurity charge dynamics and demonstrates how a secondary non-resonant laser can significantly enhance hole occupancy and tunneling rates.
This paper demonstrates that gate geometry and bias asymmetry in Ge hole quantum dots can be strategically engineered to modulate the g-factor, create dephasing sweet spots, and optimize spin relaxation by reshaping the confinement potential and controlling heavy-hole/light-hole mixing through a comprehensive 3D simulation framework.
This paper presents a unified framework combining AC impedance spectroscopy, DLTS, and C-V analysis to identify and quantify distinct charge noise sources in quantum dot spin qubits, demonstrating how specific trap states at oxide interfaces, quantum well boundaries, and in the bulk can be resolved through their unique spectral and temporal signatures to guide coherence optimization.
This paper presents a theoretical framework and experimental proposal for a quantum-enhanced two-qubit refrigerator that utilizes internally correlated atom pairs to autonomously cool a microwave cavity to sub-100 mK temperatures from a 4 K bath, a capability achieved through collective coupling that surpasses the limitations of single-atom cooling.
This paper establishes that the diffusion constant and DC conductivity in systems with linear Dirac dispersion can be rigorously separated into ordinary band velocity and quantum geometric contributions, revealing that the diffusion constant of three-dimensional Dirac fermions at charge neutrality is entirely quantum geometric due to an accidental cancellation of the band velocity term, a phenomenon not observed in two dimensions.
This paper demonstrates that unconventional ferroelectricity in graphene-heterostructure systems can be engineered through specific hexagonal boron nitride (hBN) boundaries and line defects, revealing that such behavior arises from localized charge states even without the precise lattice alignments previously thought necessary.
This expository paper derives the electrostatic potential arising from image charges for an electron confined between grounded conducting planes, coupling a hydrogen-like system with a particle-in-a-box model, and solves the resulting Schrödinger equation to analyze the transition between large and small separation limits and the associated tunneling level splitting.
This paper demonstrates ultrastrong light-matter coupling in near-field coupled split-ring resonators (specifically dimers and topological chains) via photocurrent spectroscopy, revealing hybridization with both bright and dark modes as well as topological edge states.
This paper challenges the conventional belief that quantum fluctuations always lower transition temperatures by demonstrating, through numerical simulations and perturbation theory on generalized Wigner crystals in moiré systems, that the interplay between quantum and thermal fluctuations can be competitive and actually increase the melting temperature in certain regimes.
This paper introduces a continuum framework for directly modeling finite geometries in twisted bilayer WSe to demonstrate that magic-angle nanoribbons host electrically tunable, layer-polarized chiral edge states consistent with bulk topology, thereby establishing a general approach for studying boundary physics in topological moiré materials without relying on lattice models.