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Electron excitations at silicon and 3C-SiC surfaces caused by an intense femtosecond laser pulse can be calculated by solving the time-dependent density functional theory and the Maxwell's equation simultaneously. The energy absorption,…

Applied Physics · Physics 2019-08-16 Tomohito Otobe

Highly disordered superconductors, in the magnetic-field-driven insulating state, can show discontinuous current-voltage characteristics. Electron overheating has been shown to give a consistent description of this behavior, but there are…

Strongly Correlated Electrons · Physics 2016-11-30 Tal Levinson , Adam Doron , Idan Tamir , Girish Chandra Tewari , Dan Shahar

Large-amplitude electrostatic fluctuations are routinely observed by spacecraft upon traversal of collisionless shocks in the heliosphere. Kinetic simulations of shocks have struggled to reproduce the amplitude of such fluctuations,…

Space Physics · Physics 2025-09-29 Vadim Roytershteyn , Lynn B. Wilson , Li-Jen Chen , Michael Gedalin , Nikolai Pogorelov

In collision-poor space plasmas protons with an excess of kinetic energy or temperature in direction perpendicular to background magnetic field can excite the electromagnetic ion cyclotron (EMIC) instability. This instability is expected to…

Plasma Physics · Physics 2021-02-03 S. M. Shaaban , M. Lazar , R. Schlickeiser

Understanding the non-equilibrium behavior of stainless steel under extreme electronic excitation remains a critical challenge for laser processing and radiation science. We employ a hybrid framework integrating density-functional tight…

Materials Science · Physics 2025-10-28 Nikita Medvedev

DIII-D discharges that transition to H-mode solely with off-axis electron cyclotron heating (ECH) often exhibit strong off-axis peaking of electron temperature profiles at the heating location. Electron heat transport properties near these…

Plasma Physics · Physics 2023-10-20 Ruifeng Xie , Max E. Austin , Kenneth W. Gentle , Craig C. Petty

Measuring the internal quality factor of coplanar waveguide superconducting resonators is an established method of determining small losses in superconducting devices. Traditionally, the resonator losses are only attributed to two-level…

Quantum Physics · Physics 2025-07-25 Ashish Alexander , Christopher G. Weddle , Christopher J. K. Richardson

A model of a strongly correlated electron liquid based on the fermion condensation (FC) is applied to the consideration of high temperature superconductors in its superconducting and normal states. Within our model the appearance of FC…

Superconductivity · Physics 2009-10-31 M. Ya. Amusia , V. R. Shaginyan

A Monte Carlo (MC) code is used to investigate the bremsstrahlung x-ray emission of an electron cyclotron resonance ion source (ECRIS) and its dependence on the axial magnetic confinement. The x-ray spectral temperature Ts measured with the…

Accelerator Physics · Physics 2025-01-08 Andrea Cernuschi , Thomas Thuillier

Shock parameters at Earth's bow shock in rare instances can approach the Mach numbers predicted at supernova remnants. We present our analysis of a high Alfv\'en Mach number ($M_A= 27$) shock utilizing multipoint measurements from the…

The effect of substrate bias and surface gate voltage on the low temperature resistivity of a Si-MOSFET is studied for electron concentrations where the resistivity increases with increasing temperature. This technique offers two degrees of…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 A. Lewalle , M. Pepper , C. J. B. Ford , E. H. Hwang , S. Das Sarma , D. J. Paul , G. Redmond

We develop a systematic theory of the Hall effect in Q1D conductors in both weak and strong magnetic fields for a model where the electron relaxation time varies over the Fermi surface. At high temperatures, the Hall coefficient saturates…

Condensed Matter · Physics 2007-05-23 Victor M. Yakovenko , Anatoley T. Zheleznyak

Low Mach number collisionless shocks are routinely observed in the solar wind and upstream of planetary bodies. However, most in situ observations have lacked the necessary temporal resolution to directly study the kinetic behavior of ions…

Space Physics · Physics 2024-09-17 D. B. Graham , Yu. V. Khotyaintsev

The preacceleration of electrons through reflection and shock drift acceleration (SDA) is essential for the diffusive shock acceleration (DSA) of nonthermal electrons in collisionless shocks. Previous studies suggested that, in weak…

High Energy Astrophysical Phenomena · Physics 2020-04-08 Sunjung Kim , Ji-Hoon Ha , Dongsu Ryu , Hyesung Kang

Electric, thermal and thermoelectric transport in correlated electron systems probe different aspects of the many-body dynamics, and thus provide complementary information. These are well studied in the low- and high-temperature limits,…

Strongly Correlated Electrons · Physics 2020-02-19 Woo-Ram Lee , Alexander M. Finkel'stein , Karen Michaeli , Georg Schwiete

We investigate the behavior of the thermoelectric power [S] in disordered systems close to the Anderson-type metal-insulator transition [MIT] at low temperatures. In the literature, we find contradictory results for S. It is either argued…

Disordered Systems and Neural Networks · Physics 2017-09-27 C. Villagonzalo , R. A. Roemer

We present the results of two-temperature magnetohydrodynamic simulations of the propagation of sub-relativistic jets of active galactic nuclei. The dependence of the electron and ion temperature distributions on the fraction of electron…

High Energy Astrophysical Phenomena · Physics 2020-03-18 T. Ohmura , M. Machida , K. E. Nakamura , Y. Kudoh , R. Matsumoto

We investigate evolution of the intracluster medium (ICM), considering the relaxation process between the ions and electrons. According to the standard scenario of structure formation, ICM is heated by the shock in the accretion flow to the…

Astrophysics · Physics 2009-10-30 Motokazu Takizawa

We present a detailed study of the quasiparticle contribution to the low-temperature specific heat of an extreme type-II superconductor at high magnetic fields. Within a T-matrix approximation for the self-energies in the mixed state of a…

Superconductivity · Physics 2009-11-10 A. L. Carr , J. J. Trafton , S. Dukan , Z. Tesanovic

Shock accelerated electrons are found in many astrophysical environments, and the mechanisms by which they are accelerated to high energies are still not completely clear. For relatively high Mach numbers, the shock is supercritical, and…

Space Physics · Physics 2018-10-17 D. Trotta , D. Burgess
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