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Anomalous Resistivity and the Electron–Polaron Effect in the Two-Band Hubbard Model with One Narrow Band
Springer Science and Business Media LLC - Tập 25 - Trang 1379-1382 - 2012
M. Y. Kagan, V. V. Val’kov
We search for anomalous normal and superconductive behavior in the two-band Hubbard model with one narrow band. We analyze the influence of the electron–polaron effect and the Altshuler–Aronov effect on effective mass enhancement and scattering times of heavy and light components in the clean case. We find anomalous behavior of resistivity at high temperatures ...... hiện toàn bộ
Potential Antiperovskite Semiconductor Compounds Mg3XN (X = P, As, Sb, Bi): the First-Principles Study
Springer Science and Business Media LLC - Tập 35 - Trang 3277-3290 - 2022
Zhong-yue Gao, Wei Wang, Bo-chen Li, Lei Sun, Feng Wang
In this work, the antiperovskite semiconductor compounds Mg3XN (X = P, As, Sb, Bi) are investigated using the first-principles calculations. The structural, electronic, optical, and elastic properties of the Mg3XN compounds are studied in detail. Meanwhile, the magnetism is introduced by doping Mn element in Mg3XN compounds. Mg3XN compounds are semiconductors with direct band gap from the analysis...... hiện toàn bộ
Tailoring Bloch-type Stripe Domain Wall by Spin–orbit Torque for Reconfigurable Magnonic Waveguides
Springer Science and Business Media LLC - Tập 35 - Trang 3249-3254 - 2022
Jingsi Li, Xiangjun Xing
Efficient manipulation of magnetic textures by spin–orbit torque is of great significance to spintronic and magnonic technologies. Here, using micromagnetic simulations, we exploit the dynamics of a Bloch-type stripe domain wall in a magnetic nanowire induced by the spin-Hall effect associated with a ferromagnet/heavy metal structure. Our numerical results demonstrate that, contrary to the Néel-ty...... hiện toàn bộ
Microwave Response of Perfect YBa2Cu3O7−x Thin Films Deposited on CeO2-Buffered Saphire: A Probe for Pairing Symmetry
Springer Science and Business Media LLC - Tập 20 - Trang 59-69 - 2007
V. M. Pan, A. A. Kalenyuk, A. L. Kasatkin, O. M. Ivanyuta, G. A. Melkov
Microwave surface impedance, Z s(T), of epitaxial YBCO thin films deposited on CeO2-buffered sapphire substrates, was measured at several discrete frequencies within the range 5–134 GHz by use of coplanar resonator and end-plate cavity resonator techniques. The main features of obtained experimental results are as follows: (i) surface resistance R s(T) at low temper...... hiện toàn bộ
Superfluid Density in Cuprates: Hints on Gauge Compositeness of the Holes
Springer Science and Business Media LLC - - 2017
P. A. Marchetti, Giacomo Bighin
Superconductivity and Phase Diagram in a CuO2 Monolayer
Springer Science and Business Media LLC - Tập 15 - Trang 639-641 - 2002
J. Bok, J. Bouvier
We recall the van Hove scenario (J. Labbe and J. Bok, Europhys. Lett. 3, 1225 (1987); J. Bouvier and J. Bok, in The Gap Symmetry and Fluctuations in HTSC, J. Bok et al., eds. (Plenum, New York, 1998)) developed since 1987. It explains high T c, anomalous isotope effect, gap anisotropy etc. We apply this scenario to the superconductive surface layer, obtained by field effect on CaCuO2 by J. H. Schö...... hiện toàn bộ
An-harmonic Oscillations and Superconductivity in (Cu0.5-xKxTl0.5)Ba2Ca2Cu3-y-z ZnyCdzO10-δ (x = 0, 0.25; y = z = 0, 0.25, 0.5, 0.75, 1) Samples
Springer Science and Business Media LLC - Tập 33 - Trang 1271-1284 - 2019
Jaffar Ali, Shafaat Hussain, Nawazish Ali Khan, Asad Raza
(Cu0.5-xKxTl0.5)Ba2Ca2Cu3-y-z ZnyCdzO10-δ (x = 0, 0.25; y = z = 0, 0.25, 0.5, 0.75, 1) samples are synthesized for the investigation of role of an-harmonic oscillations in the mechanism of high Tc superconductivity. In the conducting planes, the carrier density is enhanced by K doping at the charge reservoir layer (Cu0.5Tl0.5)Ba2O4-δ by synthesizing (Cu0.25K0.25Tl0.5)Ba2Ca2Cu3-y-zZnyCdzO10-δ (y = ...... hiện toàn bộ
Superconductivity in Transition Metal Doped MoB4
Springer Science and Business Media LLC - Tập 23 - Trang 417-422 - 2009
J. W. Simonson, D. Wu, S. J. Poon, S. A. Wolf
Polycrystalline ingots of MoB4 have been found to be superconducting near 6 to 8 K when doped with Ti or Nb. Magnetic susceptibility measurements performed on these alloys indicate that a substantial fraction of the sample volume is superconducting below the transition temperature, while X-ray diffraction scans provide insight into the crystallographic effects of the dopants on the layered MoB4 st...... hiện toàn bộ
Reel-to-Reel Deposition of Reactively Sputtered LaZrO Buffer Layers on Textured NiW Tapes for YBaCuO Coated Conductors
Springer Science and Business Media LLC - Tập 25 - Trang 773-777 - 2011
F. Fan, Y. M. Lu, Z. Y. Liu, L. L. Ying, C. B. Cai
A biaxially textured buffer layer of LaZrO (LZO) was continuously grown on Ni-5-at%W (NiW) tapes using a reel-to-reel DC reactive sputtering technique. X-ray diffraction measurements revealed that the LZO layer deposited at water vapor partial pressures of 2.5×10−2 Pa and the temperature of 800 °C are biaxially textured with the misorientation as low as 4.7°. AFM measurements show that the layer’s...... hiện toàn bộ
Critical Behavior of La0.67Ba0.33Mn0.95Fe0.05O3 Manganite
Springer Science and Business Media LLC - Tập 28 - Trang 1887-1893 - 2015
Mohamed Baazaoui, Sobhi Hcini, Michel Boudard, Sadok Zemni, Mohamed Oumezzine
The critical behavior of perovskite manganite La0.67Ba0.33Mn0.95Fe0.05O3 at the ferromagnetic–paramagnetic has been analyzed. The results show that the sample exhibited the second-order magnetic phase transition. The estimated critical exponents derived from the magnetic data using various such as modified d’Arrott plot Kouvel–Fisher method and critical magnetization M(T C, H). The...... hiện toàn bộ
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