# Browse Graduate Dissertations and Theses at Illinois by Contributor "Abbamonte, Peter M."

• (2011-01-14)
This dissertation examines the electronic properties of 2D electron systems, including ultrathin metallic films grown on semiconductor substrates and graphite/graphene layers. Both systems are (quasi) two-dimensional and ...

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• (2013-05-24)
Trial wave function based quantum Monte Carlo is a promising family of methods for the solution of quantum mechanical Hamiltonians. These fundamentally non-perturbative methods can be used to treat bosons or fermions in ...

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• (2010-01-06)
The following work consists of three related topics. First, we demonstrate a multi-dimensional, attosecond-resolution, real-space electron density imaging technique. We apply the technique to the energy-loss spectra of ...

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• (2013-08-22)
The equilibrium statistical mechanics of classical directed polymers in D+1 dimensions is well known to be equivalent to the imaginary-time quantum dynamics of a quantum many-particle system in D spatial dimensions, ...

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• (2012-05-22)
Over a century after the modern prediction of the existence of individual particles of light by Albert Einstein, a reliable source of this simple quantum state of one photon does not exist. While common light sources such ...

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• (2014-05-30)
Superconductivity (SC) in so-called “unconventional superconductors” is nearly always found in the vicinity of another ordered state, such as antiferromagnetism, charge density wave (CDW), or stripe order. This suggests a ...

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• (2013-05-24)
Significant obstacles remain for the fabrication of germanium n-MOSFETs, including enhanced diffusion of donor atoms which leads to electrical deactivation. The preferential generation of self-interstitials via proton ...

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• (2014-05-30)
In this dissertation, inelastic light (Raman) scattering techniques are used to probe the novel phases and properties of the orbital ordering material KCuF3 and the single molecule magnet Mn12-acetate as functions of ...

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• (2015-02-27)
Artificial spin ice is a class of arrays of interacting ferromagnetic nanoislands that are used to experimentally model Ising spin systems. It has been successfully used to understand the behavior of frustrated spin systems, ...

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• (2010)
The second focus of this dissertation is the study of quantum phase transitions in TiSe2 as a function of temperature and Cu-intercalation, and the comparison of the effects of intercalation and pressure on the charge-density-wave ...

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• (2010-05-14)
Abstract In this dissertation, inelastic (Raman) light scattering techniques are used to probe the temperature- and magnetic-ﬁeld-induced phase transitions of two strongly correlated systems – the magnetoelectric ...

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• (2012-05-22)
Three studies of thin metal films grown on semiconductor and insulator substrates are presented. Thin films grown on a substrate decorated by a periodic array of atomic wires can exhibit unusual properties such as stacking ...

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• (2015-01-21)
Phase separation and nanoscale fluctuation in strongly correlated systems are known to exist around their phase transitions. They are directly connected to the ordering mechanisms that cause magnetic orders, density waves, ...

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• (2011-08-26)
In this dissertation, I present our studies on two distinct strongly correlated materials: the manganese perovskites LaxPryCa1−x−yMnO3; and the manganese-based spinel Mn3O4. For this study, Raman (inelastic light) scattering ...

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• (2015-04-23)
Ultrafast techniques allow an unprecedented look at the electronic and bosonic interactions that govern the macroscopic properties of materials. These processes can now be accessed on their fundamental timescale---the ...

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• (2012-09-18)
In this thesis, we propose that a ferro-orbital order, which breaks the degeneracy between the Fe $d_{xz}$ and $d_{yz}$ orbitals, is the effective cause of the structural and the magnetic transitions in the iron-based ...

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• (2010-05-20)
Quantum information processing (QIP) promises to revolutionize existing methods of manipulating data, via truly unique paradigms based on fundamental nonclassical physical phenomenon. However, the eventual success of optical ...

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• (2014-12-22)
This thesis discusses two main topics – the effective fine-structure constant of and dielectric screening in graphene, and a new coherent inelastic x-ray scattering technique for attosecond resolution imaging of excitations ...

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PDF (37MB)
• (2010-05-19)
The G0 collaboration has measured parity-violating asymmetries in elastic electron-proton and quasi-elastic electron-deuteron scattering at Q^2 = 0.22, 0.63 GeV^2. These asymmetries are sensitive to strange quark contributions ...

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• (2013-02-03)
A linear-scaling electron-correlation method based on a truncated, electrostatically embedded many-body expansion of energies, named the binary-interaction method (BIM), has been proposed for molecular clusters and molecular ...

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