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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 581 for “"strongly correlated"”.
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Holography and strongly correlated systems
… or holography - to problems associated with strongly coupled quantum field theories under extreme conditions such as finite temperature or density. We first study a strongly coupled field theory at finite temperature. We demonstrate that its low frequency limit is determined by the horizon …
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Magnetism in strongly correlated electron systems
… two very different examples of magnetism in strongly correlated electron systems, the high-T$\sb{c}$ materials and heavy fermions.
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SPIN-ORBIT COUPLING IN STRONGLY CORRELATED SYSTEMS
… it is proposed that spin-orbit coupling can be strongly enhanced by Coulomb interaction in 5f metals. Modest values of the Coulomb interaction can induce up to a four-fold enhancement. In the third case, a model is presented to characterize spin-orbit enhancement in a strongly correlated …
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Spectral properties of strongly correlated electron systems
… O 2p_{\sigma} and Cu 3d_{x^2-y^2} orbitals are strongly peaked along the CuO_2 plane, i.e. most photoelectrons are emitted at grazing angles. This suggests that surface states play an important role in the observed ARPES spectra, consistent with recent data from Sr_2CuCl_2O_2. We show that a …
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Frustrated Magnetism in Strongly Correlated Electron Systems
… and their corresponding excitations in several strongly correlated electron systems, where exotic orderings can be induced as a result of magnetic frustration and quantum fluctuations. We show that emergent spin textures can arise close to a magnetic field-induced quantum critical point, when …
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Variational study of strongly correlated electronic models
… interest in understanding the physics of strongly correlated electronic models. In particular the two simplest models for strongly correlated electrons, namely the Hubbard and t−J models, have been the subject of in- tensive studies. In a milestone paper of 1987, P.W. Anderson proposed …
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Anistropic phenomena in strongly correlated electron systems
… thesis is concerned with momentum anisotropy in strongly correlated electron systems, and explores its origin and its consequences through two contrasting projects. The first is a study of the temperature dependences of magnetotransport quantities in the normal state of the cuprate …
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Strongly Correlated Electrons on a Triangular Lattice
… thesis we are going to study the properties of strongly correlated electron systems (SCES) using analytical, phenomenological and computational methods. In the introductory chapter we will discuss generally the problem of strongly correlated electron systems and the methods that are used to …
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Quantum simulation in strongly correlated optical lattices
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2012-07-20T15:57:21Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 3 thesis.bib: 93320 bytes, checksum: cc18186d831e1c8c8f0b0d694dddb2fe (MD5) thesis.tex: 978906 bytes, checksum: …
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Electronic light scattering in strongly correlated compounds
Submitted by Megan Hayes (mohayes2@illinois.edu) on 2012-05-03T17:30:50Z No. of bitstreams: 1 1997_nyhus.pdf: 4834912 bytes, checksum: 5e9f8252f3735202c41ae689e2e7b26d (MD5)
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Quantum gas microscopy of strongly correlated fermions
… simulate the Fermi-Hubbard model, a prototypical strongly correlated model, with site-resolved detectioi and control capablities. A new apparatus that can detect fermionic 40K in a square lattice with single-site resolution was constructed. High-fidelity site-resolved imaging was achieved using …
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Exact Diagonalization Studies of Strongly Correlated Systems
… we use exact diagonalization to study a few strongly correlated systems, ranging from the Fermi-Hubbard model to the fractional quantum Hall effect (FQHE). The discussion starts with an overview of strongly correlated systems and what is meant by strongly correlated. Then, we extend cluster …
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STRONGLY CORRELATED INTERACTING PARTICLE SYSTEMS AND THEIR APPLICATIONS
Strongly correlated interacting particle systems are probabilistic models that describe collections of particles whose behaviors are mutually dependent, typically due to repulsive or attractive forces. These models have long been central to statistical physics, where they are used to describe …
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The Gutzwiller variational method for strongly correlated systems
… the applications of the method to two specific correlated electron systems of current interest: (i) the spinless fermion model with non-local Coulomb interaction in one dimension and (ii) the pressure-induced insulator-metal transition in the colossal magneto-resistive compound LaMnO3. Our …
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Strongly Correlated Systems Approach Through Quantum Monte Carlo
Finally, we explore three algorithms for speeding up the calculation of determinant ratios specifically for insulators. These algorithms take advantage both of the locality of physics and the sparsity of the matrices that are used in the quantum wave functions that represent these insulators.
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Non-perturbative approaches to strongly correlated electron systems
… transitions. Having a proper understanding of strongly correlated electron systems requires a non-perturbative analysis because Fermi liquid theory inevitably breaks down due to the strong correlation. In this thesis, we will study two non-perturbative approaches to tackle strongly correlated …
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Field theoretical methods for strongly correlated electron systems
… successfully to the study of various systems of strongly correlated electrons in condensed matter physics, particularly to problems where a non-perturbative treatment is required.
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Field theoretical methods for strongly correlated electron systems
… successfully to the study of various systems of strongly correlated electrons in condensed matter physics, particularly to problems where a non-perturbative treatment is required. In the first part of this thesis we use this approach to investigate the Frustrated Quantum Antiferromagnet. We study …
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Duality and strongly correlated systems in two dimensions
… observed in condensed matter physics involve strongly correlated systems near quantum critical points in two spatial dimensions. Examples range from the sharing of critical exponents (superuniversality) among quantum Hall plateau transitions to the emergence of a charge-vortex symmetry near …
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