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Using atomistic pseudopotential and configuration-interaction many-body calculations, we predict a metal-nonmetal transition and an excitonic ground state in the InAs/InSb quantum dot (QD) system. For large dots, the conduction band minimum…

Materials Science · Physics 2009-11-10 Lixin He , Gabriel Bester , Alex Zunger

The non-resonant tunneling regime for charge transfer across nanojunctions is critically dependent on the so-called \beta{} parameter, governing the exponential decay of the current as the length of the junction increases. For periodic…

The topic of superconductivity in strongly disordered materials has attracted a significant attention. In particular vivid debates are related to the subject of intrinsic spatial inhomogeneity responsible for non-BCS relation between the…

For finite chemical potential effective models of QCD predict a first order phase transition. In favour for the search of such a phase transition in nature, we construct an equation of state for strange quark matter based on the MIT bag…

Solar and Stellar Astrophysics · Physics 2010-07-28 T. Fischer , I. Sagert , M. Hempel , G. Pagliara , J. Schaffner-Bielich , A. Mezzacappa , F. -K. Thielemann , M. Liebendorfer

The physics of a genuine one-dimensional system in which electrons are confined in one direction remains unclear. The actual electronic state of such a genuinely one-dimensional system has not been investigated in previous experiments, for…

Mesoscale and Nanoscale Physics · Physics 2026-04-21 S. Tanda , S. Kashimoto , H. Yamamoto , K. Inagaki , H. Nobukane , Y. Fukuda

We study nanoelectromechanical resonators fabricated from suspended flakes of NbSe$_2$ (thickness$\sim$30-50 nm) to probe charge density wave (CDW) physics at nanoscale. Variation of elastic and electronic properties accompanying the CDW…

Mesoscale and Nanoscale Physics · Physics 2010-10-28 Shamashis Sengupta , Hari S. Solanki , Vibhor Singh , Sajal Dhara , Mandar M. Deshmukh

This study investigates the first-order phase transition within neutron stars, leveraging the deep neural network (DNN) framework alongside contemporary astronomical measurements. The equation of state (EOS) for neutron stars is delineated…

Nuclear Theory · Physics 2024-07-17 Wenjie Zhou , Hong Shen , Jinniu Hu , Ying Zhang

The study of particle production in high-energy collisions of heavy ions offers a unique opportunity to explore the phase transition of strongly interacting matter. The NA61/SHINE experiment, a fixed-target setup located in the CERN SPS…

Nuclear Experiment · Physics 2025-08-26 Syed Uzair Ahmed Shah

We study superconductivity in isolated superconducting nano-cubes and nano-squares of size $L$ in the limit of negligible disorder, $\delta/\Delta_0 \ll 1$ and $k_F L \gg 1$ for which mean-field theory and semiclassical techniques are…

Superconductivity · Physics 2014-07-23 James Mayoh , Antonio M. García-García

Quantum phase-slip (QPS) is the exact dual to the well-known Josephson effect. Although there are numerous proposals for applications of QPS devices, experimental work to develop these remains in the relatively early stages. Significant…

Superconductivity · Physics 2023-02-06 Jamie A. Potter , Jonathan C. Fenton , Paul A. Warburton

In this paper, we investigated structures and charge density waves, including its origin of CDW, by using first-principles calculations. Firstly, we performed structure searches of NbSe_2 under different pressures to explore the possible…

Strongly Correlated Electrons · Physics 2017-07-12 Wending Zhao

We simulate the electron transport in vertical bi-layer nanowire which can be fabricated in molecular beam epitaxy process with lateral confinement potential formed by means of cleaved overgrowth or surface oxidization methods giving…

Mesoscale and Nanoscale Physics · Physics 2016-01-20 T. Chwiej

Co$_{1/3}$NbS$_2$ is the magnetic intercalate of 2H-NbS$_2$ where electronic itinerant and magnetic properties strongly influence each other throughout the phase diagram. Here we report the first angle-resolved photoelectron spectroscopy…

In this work, we study the resonant tunneling (RT) of electrons and H atoms in double-barrier (DB) systems. Our numerical calculations directly verify the correspondence between the resonant tunneling energies and the energy levels of…

Mesoscale and Nanoscale Physics · Physics 2024-11-14 Wei Li , Yong Yang

We measured the electrical resistivity and the $^{121}$Sb nuclear quadrupole resonance (NQR) spectra of La$_3$TiSb$_5$, which is a nonmagnetic reference system for a locally noncentrosymmetric antiferromagnet Ce$_3$TiSb$_5$, in order to…

Strongly Correlated Electrons · Physics 2024-08-02 Masahiro Manago , Gaku Motoyama , Shijo Nishigori , Kenji Fujiwara , Hisatomo Harima

Ultra-wide bandgap (UWBG) semiconductors promise to revolutionize power electronics, yet a fundamental understanding of their interfacial electronic structure has been hindered by the absence of direct experimental observation. Here, we…

Quantum confinement is known to influence fermionic condensates, resulting in quantum-size oscillations of superfluid/superconducting properties. Here we show that the impact of quantum-size effects is even more dramatic. Under realistic…

Quantum Gases · Physics 2011-10-24 A. A. Shanenko , M. D. Croitoru , A. V. Vagov , V. M. Axt , A. Perali , F. M. Peeters

Single-wall carbon nanotubes (SWCNTs) are effectively narrow ribbons of 2D materials with atomically precise edges. They are ideal systems to harness quantum transport straintronics (QTS), i.e. using mechanical strain to control quantum…

Mesoscale and Nanoscale Physics · Physics 2025-01-22 L. Huang , G. Wei , A. R. Champagne

An existence of predominant symmetrical spin configuration (spin polarised phase) and "diluted" density of states (pseudo-gap) in a layer under the Fermi level in a quantum wire is predicted. The condition of cross-over from non-polarised…

Strongly Correlated Electrons · Physics 2009-10-31 V. V'yurkov , A. Vetrov

A Fermi liquid with a 'large' Fermi surface (FL) can have a quantum phase transition to a spin density wave state (SDW) with reconstructed 'small' Fermi pockets. Both FL and SDW phases obey the Luttinger constraints on the volume enclosed…

Strongly Correlated Electrons · Physics 2025-05-13 Subir Sachdev
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