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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…

无序系统与神经网络 · 物理学 2017-09-27 C. Villagonzalo , R. A. Roemer

It is found that the polycrystalline NdRu2Ge2 undergoes two successive magnetic transitions at Tt=10 K and TN=19 K. Evidence of metamagnetic transition is detected in the magnetization isotherm data in the antiferromagnetic regime.…

强关联电子 · 物理学 2015-06-11 Bibekananda Maji , K. G. Suresh , A. K. Nigam

Electrical conductivity of finite-temperature plasma in neutron star crusts is studied for applications in magneto-hydrodynamical description of compact stars. We solve the Boltzmann kinetic equation in relaxation time approximation taking…

高能天体物理现象 · 物理学 2022-01-19 Arus Harutyunyan , Armen Sedrakian

The low-temperature normal-state specific heat and resistivity curves of various nonmagnetic intermetallic compounds manifest an anomalous thermal evolution. Such an anomaly is exhibited as a break in the slope of the linearized C/T versus…

材料科学 · 物理学 2011-11-15 M. ElMassalami

We present a detailed study of the electrical transport properties of a recently discovered iron-based superconductor: Sm$_4$Fe$_2$As$_2$Te$_{0.72}$O$_{2.8}$F$_{1.2}$. We followed the temperature dependence of the upper critical field by…

超导电性 · 物理学 2016-12-20 A Pisoni , S Katrych , P Szirmai , B Náfrádi , R Gaál , J Karpinski , L Forró

Electron transport in suspended and non-suspended GaAs point contacts (PCs) of different widths is experimentally studied. The superballistic contribution to the conductance, that demonstrates a distinctive quadratic dependence on the PC…

The electron-positive fermion gas in three dimensions and $T=0$ is modeled as two independent fermion gases interacting via the coulomb interaction. The main advantage of the simple model is that all existing results from the electron gas…

超导电性 · 物理学 2024-11-27 Carl A. Kukkonen

Thermal instability in an electron-ion magnetized plasma, which is relevant in the intragalactic medium (IGM) of galaxy clusters, solar corona, and other two-component plasma objects is investigated. We apply the multicomponent plasma…

星系天体物理 · 物理学 2015-05-28 Anatoly K. Nekrasov

The depth distribution of the transport properties as well as the temperature dependence of the low field magneto-conductance for several c-axis oriented GaN nanowall network samples grown with different average wall-widths are…

介观与纳米尺度物理 · 物理学 2014-11-04 H. P. Bhasker , Varun Thakur , S. M. Shivaprasad , S. Dhar

The thermodynamic properties of the superconducting state induced in metallic molecular hydrogen under the influence of pressure 347 GPa were determined. In particular, it has been shown that the critical temperature ($T_{C}$) changes in…

超导电性 · 物理学 2012-04-24 R. Szczęśniak , M. W. Jarosik

One special interest for the industrial development of Hall thruster is characterizing the anomalous cross-field electron transport observed after the channel exit. Since the ionization efficiency is more than 90%, the neutral atom density…

等离子体物理 · 物理学 2019-07-22 Debraj Mandal , Yves Elskens , Nicolas Lemoine , Fabrice Doveil

The nuclear liquid-gas transition at normal nuclear densities, $n \sim n_0 = 0.16$ fm$^{-3}$, and small temperatures, $T \sim 20$ MeV, has a large influence on analytic properties of the QCD grand-canonical thermodynamic potential. A…

高能物理 - 唯象学 · 物理学 2020-03-25 Oleh Savchuk , Volodymyr Vovchenko , Roman V. Poberezhnyuk , Mark I. Gorenstein , Horst Stoecker

We calculate the single-particle states of a two-dimensional electron gas (2DEG) in a perpendicular quantizing magnetic field, which is periodic in one direction of the electron layer. We discuss the modulation of the electron density in…

介观与纳米尺度物理 · 物理学 2009-10-30 Ulrich J. Gossmann , Andrei Manolescu , Rolf R. Gerhardts

The deposition of a high-$\kappa$ oxide overlayer is known to significantly enhance the room-temperature electron mobility in single-layer MoS$_{2}$ (SLM) but not in single-layer graphene (SLG). We give a quantitative account of how this…

材料科学 · 物理学 2014-09-04 Zhun-Yong Ong , Massimo V. Fischetti

We study the conductivity of two-dimensional interacting electrons on the half-filled $N$th Landau level with $N \gg 1$ in the presence of the quenched disorder. The existence of the unidirectional charge-density wave state at temperature…

介观与纳米尺度物理 · 物理学 2007-05-23 I. S. Burmistrov

HII region electron temperatures are a critical ingredient in metallicity determinations and recent observations reveal systematic variations in the temperatures measured using different ions. We present electron temperatures ($T_e$)…

We present an approach which allows the consistent treatment of bound states in the context of the dc conductivity in dense partially ionized noble gas plasmas. Besides electron-ion and electron-electron collisions, further collision…

等离子体物理 · 物理学 2017-08-02 Sebastian Rosmej , Heidi Reinholz , Gerd Röpke

We report investigations of molybdenum nitride (MoN) thin films with different thickness and disorder and with superconducting transition temperature 9.89 K $\ge{T_c}\ge$ 2.78 K. Using terahertz frequency-domain spectroscopy we explore the…

For hopping transport in disordered materials, the mobility of charge carriers is strongly dependent on temperature and the electric field. Our numerical study shows that both the energy distribution and the mobility of charge carriers in…

无序系统与神经网络 · 物理学 2016-10-26 F. Jansson , S. D. Baranovskii , F. Gebhard , R. Österbacka

The relaxation of the distribution function of the electrons drifting under the influence of a homogeneous electric field in noble gases is known to take place over an extended spatial domain at `intermediate' values of the reduced electric…

等离子体物理 · 物理学 2020-10-21 A. Albert , D. Bošnjaković , S. Dujko , Z. Donkó