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Showing 1 to 20 of 33 for “"Cuprate Superconductors"”.
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Topics in Cuprate Superconductors
Submitted by Jesse Garrison (jagarris@illinois.edu) on 2012-01-12T21:45:42Z No. of bitstreams: 1 2000_shieh.pdf: 9177080 bytes, checksum: c98e1c23c8c10d32a0c2e391c23c857b (MD5)
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Doping In high temperature cuprate superconductors
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-26T21:35:41Z No. of bitstreams: 1 Oh_Seongshik.pdf: 5610417 bytes, checksum: 2a18c3466c004f848f4a3765f4d542f0 (MD5)
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The magnetic properties of the cuprate superconductors
… on a study of the magnetic properties of the cuprate superconductors in both the normal and superconducting states. The magnetic properties are studied by making comparison to the results of nuclear magnetic resonance experiments.
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The magnetic properties of the cuprate superconductors
… on a study of the magnetic properties of the cuprate superconductors in both the normal and superconducting states. The magnetic properties are studied by making comparison to the results of nuclear magnetic resonance experiments. The author gives a simplification of the method used to …
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Temperature dependence of impurity resonances in cuprate superconductors
In conventional superconductors the superconducting gap in the electronic excitation spectrum prevents scattering of low energy electrons. In high temperature superconductors (HTS) an additional gap, the pseudogap, develops well above the superconducting transition temperature Tc. The identity of …
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Investigation of renormalization effects in high temperature cuprate superconductors
While in conventional superconductors coupling between electrons and phonons is known to be responsible for the electron pairing, for the high temperature superconductors the pairing media remains under debates. Since the interactions of electrons with other degrees of freedom (phonons, magnetic …
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Evolution of the excitation spectrum of cuprate superconductors with doping and temperature
… by which d-wave superconductivity in the cuprates emerges and is optimized by doping a Mott insulator is one of the major outstanding problems in physics. A key unresolved question in this field is how the strength of electron pairing evolves as a function of doping and temperature and …
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Characterization of collective phenomena in cuprate superconductors by momentum-resolved electron energy loss spectroscopy
… electronic materials, including high temperature superconductors, exotic topological insulators, and charge density wave materials, that exhibit emergent behavior that cannot be understood through current theories of metals and insulators. These materials are classified by the low temperature …
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Transport properties and modification of the flux pinning in single crystal bismuth cuprate superconductors
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1997.
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Topics in the Theory of High-Temperature Superconductors
… of superconductivity in the hightemperature cuprate superconductors lies in the intriguing properties of the global phase diagram of the cuprate materials. In particular, strongly underdoped cuprates exhibit antiferromagnetic order, whereas moderately underdoped cuprate superconductors …
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Cluster Dynamical Mean-Field Theory: Applications to High-Tc Cuprates and to Quantum Chemistry
… correlated electron systems, including high-Tc cuprate superconductors as well as a few quantum chemical reference systems. We start with an introduction to the background of the interacting electron systems, followed by a brief description on the current understanding of the physics of high-Tc …
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Beyond particles and localities in quantum matters
… of the exotic properties of the high temperature cuprate superconductors. The properties of the cuprates that we investigate include the fractional power-law in optical conductivity, the power-law liquid form of the scattering life-time, the violation of the conductivity sum rule, and the …
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Low temperature quasiparticle transport in d-wave superconductors
… that the order parameter (gap) in the high-Tc cuprate superconductors exhibits d-wave symmetry, vanishing at four nodal points on the Fermi surface. Near each of these four gap nodes, quasiparticles are easily excited and behave more like massless relativistic particles than electrons in a …
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Power-law liquid in high-temperature superconductors
… we demonstrate that the normal state of cuprate superconductors can be described by a power-law liquid, a state of matter with a power-law self-energy $\Sigma^{\pr\pr}\sim(\omega^{2}+\pi^{2}T^{2})^{\alpha}$. The scaling exponent decreases from $\alpha\sim1$ in the overdoped Fermi-liquid …
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Inhomogeneous 1H NMR spin-lattice relaxation in the organic superconductor κ-(BEDT-TTF)2-Cu[N(CN)2]Br
The two-dimensional superconductors based on the organic molecule “ET” have been an active area of research since their discovery over two decades ago. The member of this family with the highest critical temperature, κ-(ET)2Cu[N(CN)2]Br (Tc=11.7 K), has seen renewed interest since the observation …
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Accelerating Materials Discovery with Machine Learning
… relationships of high-temperature cuprate superconductors. One of the most significant challenges for materials informatics is the limited availability of relevant data. We propose a simple calibration-based approach to estimate the apical and in-plane copper-oxygen distances from …
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Renormalization-group theory of correlated electron systems
… is similar to that found experimentally in cuprate superconductors. Since strong anisotropy is a key aspect of high-T, materials, we also consider a d = 3 tJ model with distinct in-plane and out-of-plane couplings. We examine the evolution of the phase diagram as the interplane coupling is …
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Transport properties in the vicinity of Mott insulators
… and a metallic phase and the physics of the cuprate high-temperature superconductors. In this thesis, we start from the standard Mott insulating regime of the two dimensional Hubbard model. We then study the physics of nearby states where transport has been restored. First we consider doping …
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Ponto crítico quântico supercondutor em sistemas multi-bandas
… this area of study, driven by experiments on the cuprate superconductors, heavy fermions' materials, organic conductors and related compounds. Nevertheless, the transitions involving superconducting phases are not as well explored theoretically as transitions involving magnetic phases. Thus, the …
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DISORDER EFFECTS IN FRUSTRATED MAGNETS AND ABSORBING STATE TRANSITIONS
… the stripe and nematic phases observed e.g. in cuprate superconductors and iron pnictides. To understand the effects of disorder on such phases, we have investigated the behavior of the diluted J<sub>1</sub>-J<sub>2</sub> Ising model. Spinless impurities generate a random-field disorder for the …
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