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A coordinated temperature behavior of magnetic susceptibility and internal friction has been observed in the La2/3Ba1/3MnO3 manganite in the temperature region of the crystal phase separation 5-340 K. Stepwise temperature behavior of the…

Here, we report the magneto-conductivity (up to 14Tesla and down to 5K) analysis of Bi2Te3 single-crystal. A sharp magneto-conductivity (MC) rise (inverted v-type cusp) is observed near H=0 due to the weak antilocalization (WAL) effect,…

材料科学 · 物理学 2021-03-17 Yogesh Kumar , Rabia Sultana , V. P. S. Awana

Measurements of magnetoresistance and magnetization were carried out on ceramic samples of La_{0.5}Pb_{0.5}MnO_{3} and La_{0.5}Pb_{0.5}MnO_{3}, containing 10 at. % Ag in a dispersed form. The results obtained for the resistivity at zero…

无序系统与神经网络 · 物理学 2013-07-09 E. Rozenberg , M. Auslender , I. Felner , G. Gorodetsky

As interest in nanomaterials grows, ab initio simulations play a crucial role in designing electrochemical catalysts. Electrochemical reactions depend on electrode potential, highlighting the importance of the grand canonical…

化学物理 · 物理学 2025-09-03 Márton Guba , Tibor Höltzl

Electronic states in nanographite ribbons with zigzag edges are studied using the extended Hubbard model with nearest neighbor Coulomb interactions. The electronic states with the opposite electric charges separated along both edges are…

量子物理 · 物理学 2007-05-23 Kikuo Harigaya

We investigate bulk superconductivity in a high-quality single crystal of Bi$_2$Pd ($\beta$-Bi$_2$Pd, space group; I4/mmm) at temperatures less than 5.4 K by exploring its electrical resistivity, magnetic susceptibility, and specific heat.…

We report magnetic susceptibility $\chi(T)$ measurements on oxygen-isotope exchanged La$_{1-x}$Ca$_{x}$MnO$_{3+y}$ up to 700 K. The $1/\chi(T)$ data show that the ferromagnetic exchange-energy $J$ depends strongly on the oxygen-isotope…

强关联电子 · 物理学 2010-03-11 Guo-meng Zhao , John Mann

Oxygen isotope effects on the transport properties have been studied in high-quality epitaxial thin films of La_{0.75}Ca_{0.25}MnO_{3} and Nd_{0.7}Sr_{0.3}MnO_{3}. In the paramagnetic state, the resistivity can be well fitted by \rho (T) =…

强关联电子 · 物理学 2007-05-23 G. M. Zhao , D. J. Kang , W. Prellier , M. Rajeswari , H. Keller , T. Venkatesan , R. L. Greene

We have demonstrated the effect of hydrostatic pressure on magnetic and transport properties, and thermal transport properties in electron-doped manganites CaMn$_{1-x}$Sb$_{x}$O$_{3}$. The substitution of Sb$^{5+}$ ion for Mn $^{4+}$site of…

强关联电子 · 物理学 2015-05-18 Y. Murano , M. Matsukawa , S. Kobayashi , S. Nimori , R. Suryanarayanan , K. Koyama , N. Kobayashi

Complex electrical permittivity measurements in (1-x)[Pb(Mg1/3 Nb2/3)O3]-xPbTiO3 ceramics for 0.10 x 0.40 were performed in the frequency and temperature range from 1 kHz to 100 kHz and from 15 to 600 K, respectively. Unexpected dielectric…

材料科学 · 物理学 2009-11-10 M. H. Lente , A. L. Zanin , E. R. M. Andreeta , I. A. Santos , D. Garcia , J. A. Eiras

The temperature $T$ and magnetic field $H$ dependence of anisotropic in-plane $\rho_{ab}$ and out-of-plane $\rho_{c}$ resistivities have been investigated in single crystals of the bilayer manganite La$_{1.2}$Sr$_{1.8}$Mn$_{2}$O$_{7}$.…

材料科学 · 物理学 2009-11-07 C. L. Zhang , X. J. Chen , C. C. Almasan , J. S. Gardner , J. L. Sarrao

Silicene and related buckled materials are distinct from both the conventional two dimensional electron gas and the famous graphene due to strong spin orbit coupling and the buckled structure. These materials have potential to overcome…

介观与纳米尺度物理 · 物理学 2015-11-20 S. Nawaz , M. Tahir

The measurement of resistivity across a wide temperature range - from 15 to 1473 K - in rare-earth manganite series of compounds reveals a very interesting feature : normally observed insulating pattern beyond Tc (Curie Point) gives way to…

强关联电子 · 物理学 2009-10-31 Dipten Bhattacharya , Pintu Das , A. Pandey , A. K. Raychaudhuri , Amitava Chakraborty , V. N. Ojha

The equation describing the capacitance of capacitors is determined. It is shown that by optimizing the material of the conducting electrodes, the capacitance of capacitors reaching the quantum regime can be substantially enhanced or…

材料科学 · 物理学 2015-05-13 Thilo Kopp , Jochen Mannhart

Heat-capacity behavior in the presence of externally applied magnetic field (H) up to 140 kOe is investigated (2-35 K) for the quasi-1-dimensional compound, Ca3Co2O6, believed to order magnetically with the so-called partially disordered…

强关联电子 · 物理学 2009-11-10 E. V. Sampathkumaran , Z. Hiroi , S. Rayaprol , Y. Uwatoko

We have measured the heat capacities of $\delta-$Pu$_{0.95}$Al$_{0.05}$ and $\alpha-$Pu over the temperature range 2-303 K. The availability of data below 10 K plus an estimate of the phonon contribution to the heat capacity based on recent…

强关联电子 · 物理学 2016-08-31 J. C. Lashley , J. Singleton , A. Migliori , J. B. Betts , R. A. Fisher , J. L. Smith , R. J. McQueeney

The 'two-electron' doped rare earth mangnites Ca_1-x Ce_x MnO_3 (x = 0.1,0.2) are probed using resistivity, ac susceptibility and electron paramagnetic resonance (EPR) measurements across their respective charge ordering (CO) temperatures…

强关联电子 · 物理学 2007-05-23 Ajay Sharma , Subhasis Sarangi , S. V. Bhat

Until recently, the heat capacity of GaN had only been measured for polycrystalline powder samples. Semiempirical as well as \textit{first-principles} calculations have appeared within the past few years. We present in this article…

We apply the muffin-tin effective medium approximation to calculate the temperature dependence of the resistivity and of the thermopower of amorphous and liquid metals. The results show unambiguously that a large resistivity is accompanied…

凝聚态物理 · 物理学 2009-10-28 Ulrich Werner , Raymond Fresard

The structural and magnetic properties of Mn5Ge3Cx films prepared at elevated substrate temperatures TS are investigated. In particular, films with x >= 0.5 and TS = 680 K exhibit a strongly enhanced Curie temperature TC = 440 K compared to…

材料科学 · 物理学 2009-10-31 M. Gajdzik , C. Suergers , M. Kelemen , H. v. Loehneysen