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The thermal transport coefficients in a weakly magnetized quark-gluon plasma have been investigated within the ambit of a quasiparticle model to encode the effects of the realistic equation of state. The presence of a weak magnetic field…

核理论 · 物理学 2020-07-27 Manu Kurian

We consider transport in the insulating regime of GaMnAs. We calculate the resistance, magnetoresitance and Hall effect, assuming that the Fermi energy is in the region of localized states above the valence band mobility edge. Both hopping…

材料科学 · 物理学 2009-11-13 Louis-Francois Arsenault , B. Movaghar , P. Desjardins , A. Yelon

The normal-state charge transport is studied systematically in high-quality single crystals of BaFe$_2$(As$_{1-x}$P$_x$)$_2$ ($0 \leq x \leq 0.71$). By substituting isovalent P for As, the spin-density-wave (SDW) state is suppressed and the…

Magnetoresistance and Hall resistance measurements have been carried out in fastcooled single crystals of Bi2Se3-xTex (x: 0 to 2) in 4 to 300 K temperature range, under magnetic fields up to 15 T. The variation of resistivity with…

材料科学 · 物理学 2016-02-17 E. P. Amaladass , T. R. Devidas , Shilpam Sharma , C. S. Sundar , A. Bharathi , Awadhesh Mani

Kagome magnet usually hosts nontrivial electronic or magnetic states drawing great interests in condensed matter physics. In this paper, we report a systematic study on transport properties of kagome magnet TmMn$_6$Sn$_6$. The prominent…

强关联电子 · 物理学 2022-11-21 Bin Wang , Enkui Yi , Leyi Li , Jianwei Qin , Bing-Feng Hu , Bing Shen , Meng Wang

Strongly underdoped RuSr_1.9La_0.1GdCu_2O_8 has been comprehensively studied by dc magnetization, microwave measurements, magnetoresistivity and Hall resistivity in fields up to 9 T and temperatures down to 1.75 K. Electron doping by La…

超导电性 · 物理学 2009-11-11 M. Pozek , A. Dulcic , A. Hamzic , M. Basletic , E. Tafra , G. V. M. Williams , S. Kraemer

The contribution of superconducting fluctuations to the conductivity, or paraconductivity is studied in the underdoped regime of $La_{2-x}Sr_xCuO_4$ cuprates. A perpendicular magnetic field up to 50 T is applied to suppress the…

超导电性 · 物理学 2007-05-23 B. Leridon , J. Vanacken , T. Wambecq , V. V. Moshchalkov

In the present work, we perform a systematic investigation on p-type codoping in (Ga,Mn)As. Through gradually increasing Zn doping concentration, the hole concentration increases, which should theoretically lead to an increase of the Curie…

The finite-temperature transport properties of FeRh compounds are investigated by first-principles Density Functional Theory-based calculations. The focus is on the behavior of the longitudinal resistivity with rising temperature, which…

Finite-temperature properties of weakly doped antiferromagnets as modeled by the two-dimensional t-J model and relevant to underdoped cuprates are investigated by numerical studies of small model systems at low doping. Two numerical methods…

强关联电子 · 物理学 2007-05-23 D. Veberic , P. Prelovsek , H. G. Evertz

Long needle-shaped single crystals of Zn1-xCoxO were grown at low temperatures using a molten salt solvent technique, up to x=0.10. The conduction process at low temperatures is determined to be by Mott variable range hopping. Both pristine…

材料科学 · 物理学 2013-06-13 N. Sharma , S. Granville , S. C. Kashyap , J. -Ph. Ansermet

In this Letter, four-point magnetotransport of high mobility InGaAs/InP heterointerfaces is measured from 1.6 K to 300 K and from 0 to 15 T, and an analysis is shown whereby the mobility and density of the two-dimensional (2D) accumulation…

介观与纳米尺度物理 · 物理学 2011-01-26 Yang Tang , Chuanle Zhou , M. Grayson

Low-temperature (down to $\sim$ 50 mK) thermal conductivity measurements with the heat flow direction along the inter-plane tetragonal $c$-axis, $\kappa_c$, were used to study the superconducting state of heavy fermion CeIrIn$_5$.…

超导电性 · 物理学 2022-04-14 H. Shakeripour , M. A. Tanatar , C. Petrovic , Louis Taillefer , Louis Taillefer

The negative Hall constant R_H measured all over the phase diagram of Ba(Fe(1-x)Cox)2As2 allows us to show that electron carriers always dominate the transport properties. The evolution of R_H with x at low doping (x<2%) indicates that…

超导电性 · 物理学 2009-09-04 F. Rullier-Albenque , D. Colson , A. Forget , H. Alloul

Magnetic and transport properties of $Co Sr_2 Y_{1-x} Ca_x Cu_2 O_7$ ($x=0 \sim 0.4$) system have been investigated. A broad maximum in M(T) curve, indicative of low-dimensional antiferromagnetic ordering originated from $CoO_{1+\delta}$…

强关联电子 · 物理学 2007-05-23 X. G. Luo , X. H. Chen , X. Liu , R. T. Wang , Y. M. Xiong , C. H. Wang , G. Y. Wang , X. G. Qiu

Ferromagnetic Co$_2$MnGa has recently attracted significant attention due to effects related to non-trivial topology of its band structure, however a systematic study of canonical magneto-galvanic transport effects is missing. Focusing on…

We calculate the thermal and thermoelectric transport coefficients for a two-dimensional spin-density-wave metal in the presence of weak disorder and under an external magnetic field using the Mori-Zwanzig memory matrix formalism. As a…

强关联电子 · 物理学 2019-05-09 Hermann Freire

he relationship between photoemission spectra of high-$T_{\textrm{c}}$ cuprates and their thermodynamic and transport properties are discussed. The doping dependence of the expected quasi-particle density at the Fermi level ($E_\mathrm{F}$)…

The effect of Pr-doping on structural, magnetic and transport properties in electron-doped manganites La0.9-xPrxTe0.1MnO3 with fixed carrier concentration are investigated. The room temperature structural transition from rhombohedral (R3C)…

强关联电子 · 物理学 2009-11-10 J. Yang , W. H. Song , Y. Q. Ma , R. L. Zhang , B. C. Zhao , Z. G. Sheng , G. H. Zheng , J. M. Dai , Y. P. Sun

We have investigated the temperature and magnetic field dependence of the Hall coefficient of two well-characterized superconducting MgB$_2$ films (T$_{c0}$=38.0 K) in both the normal and superconducting states. Our results show that the…

超导电性 · 物理学 2007-05-23 R. Jin , M. Paranthaman , H. Y. Zhai , H. M. Christen , D. K. Christen , D. Mandrus