The Experts below are selected from a list of 306063 Experts worldwide ranked by ideXlab platform
Y H Liu - One of the best experts on this subject based on the ideXlab platform.
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universal Linear Temperature resistivity possible quantum diffusion transport in strongly correlated superconductors
Scientific Reports, 2017Co-Authors: Y H Liu, Hong Xiao, Yifeng YangAbstract:The strongly correlated electron fluids in high Temperature cuprate superconductors demonstrate an anomalous Linear Temperature (T) dependent resistivity behavior, which persists to a wide Temperature range without exhibiting saturation. As cooling down, those electron fluids lose the resistivity and condense into the superfluid. However, the origin of the Linear-T resistivity behavior and its relationship to the strongly correlated superconductivity remain a mystery. Here we report a universal relation [Formula: see text], which bridges the slope of the Linear-T-dependent resistivity (dρ/dT) to the London penetration depth λ L at zero Temperature among cuprate superconductor Bi2Sr2CaCu2O8+δ and heavy fermion superconductors CeCoIn5, where μ 0 is vacuum permeability, k B is the Boltzmann constant and ħ is the reduced Planck constant. We extend this scaling relation to different systems and found that it holds for other cuprate, pnictide and heavy fermion superconductors as well, regardless of the significant differences in the strength of electronic correlations, transport directions, and doping levels. Our analysis suggests that the scaling relation in strongly correlated superconductors could be described as a hydrodynamic diffusive transport, with the diffusion coefficient (D) approaching the quantum limit D ~ ħ/m*, where m* is the quasi-particle effective mass.
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universal Linear Temperature resistivity possible quantum diffusion transport in strongly correlated superconductors
arXiv: Superconductivity, 2017Co-Authors: Y H Liu, Hong Xiao, Yifeng YangAbstract:The strongly correlated electron fluids in high Temperature cuprate superconductors demonstrate an anomalous Linear Temperature ($T$) dependent resistivity behavior, which persists to a wide Temperature range without exhibiting saturation. As cooling down, those electron fluids lose the resistivity and condense into the superfluid. However, the origin of the Linear-$T$ resistivity behavior and its relationship to the strongly correlated superconductivity remain a mystery. Here we report a universal relation $d\rho/dT=(\mu_0k_B/\hbar)\lambda^2_L$, which bridges the slope of the Linear-$T$-dependent resistivity ($d\rho/dT$) to the London penetration depth $\lambda_L$ at zero Temperature among cuprate superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ and heavy fermion superconductors CeCoIn$_5$, where $\mu_0$ is vacuum permeability, $k_B$ is the Boltzmann constant and $\hbar$ is the reduced Planck constant. We extend this scaling relation to different systems and found that it holds for other cuprate, pnictide and heavy fermion superconductors as well, regardless of the significant differences in the strength of electronic correlations, transport directions, and doping levels. Our analysis suggests that the scaling relation in strongly correlated superconductors could be described as a hydrodynamic diffusive transport, with the diffusion coefficient ($D$) approaching the quantum limit $D\sim\hbar/m^*$, where $m^*$ is the quasi-particle effective mass.
Yifeng Yang - One of the best experts on this subject based on the ideXlab platform.
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universal Linear Temperature resistivity possible quantum diffusion transport in strongly correlated superconductors
Scientific Reports, 2017Co-Authors: Y H Liu, Hong Xiao, Yifeng YangAbstract:The strongly correlated electron fluids in high Temperature cuprate superconductors demonstrate an anomalous Linear Temperature (T) dependent resistivity behavior, which persists to a wide Temperature range without exhibiting saturation. As cooling down, those electron fluids lose the resistivity and condense into the superfluid. However, the origin of the Linear-T resistivity behavior and its relationship to the strongly correlated superconductivity remain a mystery. Here we report a universal relation [Formula: see text], which bridges the slope of the Linear-T-dependent resistivity (dρ/dT) to the London penetration depth λ L at zero Temperature among cuprate superconductor Bi2Sr2CaCu2O8+δ and heavy fermion superconductors CeCoIn5, where μ 0 is vacuum permeability, k B is the Boltzmann constant and ħ is the reduced Planck constant. We extend this scaling relation to different systems and found that it holds for other cuprate, pnictide and heavy fermion superconductors as well, regardless of the significant differences in the strength of electronic correlations, transport directions, and doping levels. Our analysis suggests that the scaling relation in strongly correlated superconductors could be described as a hydrodynamic diffusive transport, with the diffusion coefficient (D) approaching the quantum limit D ~ ħ/m*, where m* is the quasi-particle effective mass.
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universal Linear Temperature resistivity possible quantum diffusion transport in strongly correlated superconductors
arXiv: Superconductivity, 2017Co-Authors: Y H Liu, Hong Xiao, Yifeng YangAbstract:The strongly correlated electron fluids in high Temperature cuprate superconductors demonstrate an anomalous Linear Temperature ($T$) dependent resistivity behavior, which persists to a wide Temperature range without exhibiting saturation. As cooling down, those electron fluids lose the resistivity and condense into the superfluid. However, the origin of the Linear-$T$ resistivity behavior and its relationship to the strongly correlated superconductivity remain a mystery. Here we report a universal relation $d\rho/dT=(\mu_0k_B/\hbar)\lambda^2_L$, which bridges the slope of the Linear-$T$-dependent resistivity ($d\rho/dT$) to the London penetration depth $\lambda_L$ at zero Temperature among cuprate superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ and heavy fermion superconductors CeCoIn$_5$, where $\mu_0$ is vacuum permeability, $k_B$ is the Boltzmann constant and $\hbar$ is the reduced Planck constant. We extend this scaling relation to different systems and found that it holds for other cuprate, pnictide and heavy fermion superconductors as well, regardless of the significant differences in the strength of electronic correlations, transport directions, and doping levels. Our analysis suggests that the scaling relation in strongly correlated superconductors could be described as a hydrodynamic diffusive transport, with the diffusion coefficient ($D$) approaching the quantum limit $D\sim\hbar/m^*$, where $m^*$ is the quasi-particle effective mass.
V. I. Anisimov - One of the best experts on this subject based on the ideXlab platform.
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Microscopic origin of the Linear Temperature increase of the magnetic susceptibility of BaFe 2 As 2
Physical Review B, 2012Co-Authors: S. L. Skornyakov, V. I. Anisimov, Dieter VollhardtAbstract:Employing a combination of \emph{ab initio} band structure theory and dynamical mean-field theory we explain the experimentally observed Linear Temperature increase of the magnetic susceptibility of the iron pnictide material BaFe$_{2}$As$_{2}$. The microscopic origin of this anomalous behaviour is traced to a sharp peak in the spectral function located approximately 100 meV below the Fermi level. This peak is due to the weak dispersion of two-dimensional bands associated with the layered crystal structure of pnictides.
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Linear-Temperature dependence of static magnetic susceptibility in LaFeAsO from dynamical mean-field theory.
Physical review letters, 2011Co-Authors: S. L. Skornyakov, A. A. Katanin, V. I. AnisimovAbstract:In this Letter we report the local density approximation with dynamical mean field theory results for magnetic properties of the parent superconductor LaFeAsO in the paramagnetic phase. Calculated uniform magnetic susceptibility shows Linear dependence at intermediate Temperatures in agreement with experimental data. Contributions to the Temperature dependence of the uniform susceptibility are strongly orbitally dependent. For high Temperatures (>1000 K) susceptibility first saturates and then decreases with Temperature. Our results demonstrate that Linear-Temperature dependence of static magnetic susceptibility in pnictide superconductors can be reproduced without invoking antiferromagnetic fluctuations.
Hong Xiao - One of the best experts on this subject based on the ideXlab platform.
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universal Linear Temperature resistivity possible quantum diffusion transport in strongly correlated superconductors
Scientific Reports, 2017Co-Authors: Y H Liu, Hong Xiao, Yifeng YangAbstract:The strongly correlated electron fluids in high Temperature cuprate superconductors demonstrate an anomalous Linear Temperature (T) dependent resistivity behavior, which persists to a wide Temperature range without exhibiting saturation. As cooling down, those electron fluids lose the resistivity and condense into the superfluid. However, the origin of the Linear-T resistivity behavior and its relationship to the strongly correlated superconductivity remain a mystery. Here we report a universal relation [Formula: see text], which bridges the slope of the Linear-T-dependent resistivity (dρ/dT) to the London penetration depth λ L at zero Temperature among cuprate superconductor Bi2Sr2CaCu2O8+δ and heavy fermion superconductors CeCoIn5, where μ 0 is vacuum permeability, k B is the Boltzmann constant and ħ is the reduced Planck constant. We extend this scaling relation to different systems and found that it holds for other cuprate, pnictide and heavy fermion superconductors as well, regardless of the significant differences in the strength of electronic correlations, transport directions, and doping levels. Our analysis suggests that the scaling relation in strongly correlated superconductors could be described as a hydrodynamic diffusive transport, with the diffusion coefficient (D) approaching the quantum limit D ~ ħ/m*, where m* is the quasi-particle effective mass.
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universal Linear Temperature resistivity possible quantum diffusion transport in strongly correlated superconductors
arXiv: Superconductivity, 2017Co-Authors: Y H Liu, Hong Xiao, Yifeng YangAbstract:The strongly correlated electron fluids in high Temperature cuprate superconductors demonstrate an anomalous Linear Temperature ($T$) dependent resistivity behavior, which persists to a wide Temperature range without exhibiting saturation. As cooling down, those electron fluids lose the resistivity and condense into the superfluid. However, the origin of the Linear-$T$ resistivity behavior and its relationship to the strongly correlated superconductivity remain a mystery. Here we report a universal relation $d\rho/dT=(\mu_0k_B/\hbar)\lambda^2_L$, which bridges the slope of the Linear-$T$-dependent resistivity ($d\rho/dT$) to the London penetration depth $\lambda_L$ at zero Temperature among cuprate superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ and heavy fermion superconductors CeCoIn$_5$, where $\mu_0$ is vacuum permeability, $k_B$ is the Boltzmann constant and $\hbar$ is the reduced Planck constant. We extend this scaling relation to different systems and found that it holds for other cuprate, pnictide and heavy fermion superconductors as well, regardless of the significant differences in the strength of electronic correlations, transport directions, and doping levels. Our analysis suggests that the scaling relation in strongly correlated superconductors could be described as a hydrodynamic diffusive transport, with the diffusion coefficient ($D$) approaching the quantum limit $D\sim\hbar/m^*$, where $m^*$ is the quasi-particle effective mass.
Guangming Zhang - One of the best experts on this subject based on the ideXlab platform.
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universal Linear Temperature dependence of static magnetic susceptibility in iron pnictides
EPL, 2009Co-Authors: Guangming Zhang, Yuehua Su, Zhongyi Lu, Zhengyu Weng, Tao XiangAbstract:A universal Linear-Temperature dependence of the uniform magnetic susceptibility has been observed in the non-magnetic normal state of iron pnictides. This non-Pauli and non-Curie-Weiss-like paramagnetic behavior cannot be understood within a simple mean-field picture. We argue that it results from the existence of a wide antiferromagnetic fluctuation window in which the local spin-density-wave correlations exist but the global directional order has not been established yet.
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universal Linear Temperature dependence of static magnetic susceptibility in iron pnictides
arXiv: Strongly Correlated Electrons, 2008Co-Authors: Guangming Zhang, Zhengyu Weng, Dunghai Lee, Tao XiangAbstract:A universal Linear-Temperature dependence of the uniform magnetic susceptibility has been observed in the nonmagnetic normal state of iron-pnictides. This non-Pauli and non-Curie-Weiss-like paramagnetic behavior cannot be understood within a pure itinerant picture. We argue that it results from the existence of a wide antiferromagnetic fluctuation window in which the local spin-density-wave correlations exist but the global directional order has not been established yet.
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Linear Temperature dependence of electrical resistivity in a single-impurity model.
Physical review letters, 1996Co-Authors: Guangming Zhang, Alex C. HewsonAbstract:Using the Majorana fermion representation, we consider a compactified Anderson impurity model, which has a non-Fermi-liquid weak-coupling fixed point. The impurity free energy, self-energies, and vertex function are perturbatively formulated in terms of Pfaffian determinants. A Linear Temperature dependence of the electrical resistivity is obtained from the second-order perturbation. In the third order of $U$, the vertex function is found to be logarithmic divergent. A summation of the leading logarithmic terms gives a new weak-coupling low-Temperature energy scale ${T}_{c}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}\ensuremath{\Delta}\mathrm{exp}[\ensuremath{-}\frac{1}{9}(\frac{\ensuremath{\pi}\ensuremath{\Delta}}{U}{)}^{2}]$.
