Conveners
DCMMP Poster Session with beer / Session d'affiches, avec bière DPMCM
- Giovanni Fanchini (The University of Western Ontario)
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Mark Stern (McGill University)14/06/2016, 19:00Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)The crystallization of amorphous semiconductors is a strongly exothermic process. Once initiated, the release of latent heat can be sufficient to drive a self-sustaining crystallization front through the material in a manner that has been described as explosive. Using Dynamic Transmission Electron Microscope (DTEM), we have obtained time-resolved snap shots of three distinct microstructural...Go to contribution page
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Laurent René de Cotret (McGill University)14/06/2016, 19:02Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)Vanadium dioxide is notable for exhibiting several low-temperature insulating phases and having a very well studied insulator-metal transition at ~68$^{\circ}C$ that is associated with a crystallographic change from monoclinic semiconductor to rutile metal. Using a combination of ultrafast electron diffraction (UED) and broadband spectroscopy, we have recently demonstrated that photoexcitation...Go to contribution page
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Mr Edward Muzar (Queen's University)14/06/2016, 19:04Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)Surface acoustic waves (SAWs) on semiconductors, such as gallium arsenide (GaAs), are able to control quantum processes. SAW devices are augmented with phononic crystal waveguides to have fine control of the acoustic path. A phononic crystal in a GaAs substrate is produced by wet etching a square lattice array of void inclusions with an L1 defect. GaAs by its piezoelectricity, is suited for...Go to contribution page
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Mr Stephen Spencer (Memorial University of Newfoundland)14/06/2016, 19:06Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)Brillouin light scattering experiments were performed on lead scandium tantalate ceramics using a 180˚ backscattering geometry. Spectral peaks due to longitudinal bulk acoustic modes were observed and their frequencies were used to determine the corresponding phonon velocities and elastic constant c¬11. Temperature dependence of longitudinal bulk mode frequencies, and subsequently velocities,...Go to contribution page
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Lauren Hayward Sierens (University of Waterloo)14/06/2016, 19:08Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)We present a theory that describes the pseudogap regime of the hole-doped cuprate superconductors by incorporating the competing effects of superconducting and charge density wave orders into six-dimensional degrees of freedom on a two-dimensional lattice [Science 343, 1336 (2014)]. Using Monte Carlo simulations, we calculate the charge order correlations and diamagnetic susceptibility [PRB...Go to contribution page
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Mr Chao Zheng (McMaster University)14/06/2016, 19:12Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)Metal-trihalide perovskite is a new promising third generation active material for solar cell applications. The material is crystallized in a perovskite structure ABX3, where A is an organic cation (e.g. formamidinium), B is the metal cation (lead) and X is the halide anion (iodine). Perovskites exhibit the power conversion efficiency, which is comparable to silicon photovoltaic devices....Go to contribution page
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Christopher Pashartis (McMaster)14/06/2016, 19:14Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)We explore the band structures of new III-V material zinc blende alloys composed of B, N, Ga, As, In, Sb, and Bi for 1.55 μm wavelength telecommunication lasers and their corresponding electron localization at atomic sites from first principles. Engineering III-V semiconductors by mixing modifies their electronic properties including band gaps and lattice constants that are typically a blend...Go to contribution page
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Eamonn Campbell (Trent University)14/06/2016, 19:16Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)Real-space renormalization group approach to the Anderson model Many of the most interesting electronic behaviors currently being studied are associated with strong correlations. In addition, many of these materials are disordered either intrinsically or due to doping. Solving interacting systems exactly is extremely computationally expensive, and moreover approximate techniques developed...Go to contribution page
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Mrs Khawla Elfied (Memorial University of Newfoundland)14/06/2016, 19:18Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)We theoretically examined whether samarium hexaboride (SmB$_6$) is topological insulator, or not. Despite the fact that the SmB$_6$ has long been known as a topological Kondo insulator, with strong correlations and band hybridization, it is still of a great interest because of low-temperature transport anomalies which have recently been interpreted as evidence that SmB$_6 $ is a topological...Go to contribution page
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Chloé Gauvin-Ndiaye (Université de Sherbrooke)14/06/2016, 19:20Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)Topological insulators constitute a new class of material with an energy gap in the bulk and unusual metallic states on the surface. To date, most experiments have focused on probing the surface properties of these materials and suppressing the often inevitable contribution from bulk states. However, the bulk states in topological materials are of interest on their own and contain useful...Go to contribution page
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Thomas Gobeil (University of Sherbrooke)14/06/2016, 19:22Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)We study the existence of stable topological quantum memory at finite temperature. This aids in tackling the fundamental problematic of storing quantum information for macroscopically significant times without the use of external intervention in the form of error correction. It has been argued before that a gravitational attraction could confine the anyonic excitations in a topological...Go to contribution page
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Bohdan Kulchytskyy (University of Waterloo)14/06/2016, 19:24Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)The field of machine learning has been revolutionized by the recent improvements in the training of deep networks. Their architecture is based on a set of stacked layers of simpler modules. One of the most successful building blocks, known as a restricted Boltzmann machine, is an energetic model based on the classical Ising Hamiltonian. In our work, we investigate the benefits of quantum...Go to contribution page
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PENG LV (UQTR)14/06/2016, 19:26Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)Hydrogen is considered to be a good candidate to replace oil as an energy vector for mobile and stationary applications. Presently, the main ways to store hydrogen are in the liquid form at very low temperature or in gaseous state in high pressure tanks. However, these two techniques have serious limitations due to the low temperature and high pressure involved. There is thus the need to...Go to contribution page
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Mr Amol Kamble (Queen Elizabeth Scholar, UQTR)14/06/2016, 19:30Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)Hydrogen is a promising renewable energy vector that could be used in chemistry or to produce electricity via a fuel cell. Hydrogen can be stored in various forms such as gaseous, liquid, and metal hydrides. Metal hydrides are particularly attractive because of their low operation pressure and high volumetric capacities. In this communication we report the effect of ball milling on the...Go to contribution page
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Mr Abhishek Kumar Patel (UQTR)14/06/2016, 19:32Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)Economic and environmental considerations are pushing the society to replace oil by renewable energies. In this perspective, hydrogen is considered to be a good candidate as an energy vector for mobile and stationary applications. The conventional ways to store hydrogen are in the liquid form at very low temperature or in gaseous state in high pressure tanks. However, these two techniques...Go to contribution page
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Ms Viney Dixit (UQTR)14/06/2016, 19:34Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)Hydrogen has attracted a permanent interest as a future energy carrier because of its high ignition power and pollution free nature. One problem facing the widespread of hydrogen as an energy carrier is storage. Presently the main ways to store hydrogen are in liquid form or as a high pressure gas. Both techniques have their drawbacks and new ways to store hydrogen at room temperature and low...Go to contribution page
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Dr Gurinder Kaur Ahluwalia (College of The North Atlantic), Dr Mandeep Singh Bakshi (Wlfred laurier University)14/06/2016, 19:36Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Non-Student) / affiche (non-étudiant)Mesoporous silica nanoparticles (MSNs) have attracted a lot of attention recently due to their versatile applications in biomedical field. The origin of this is related to the nature of nanometer size pores which create a huge surface area to harbor drug molecules and act as potential carriers in biological systems. The charged surface of MSNs is also highly instrumental in inviting the other...Go to contribution page
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Mr Tyler Downey (Memorial University of Newfoundland)14/06/2016, 19:38Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)In this poster, we describe the results of our investigation into the relevance of skewness and kurtosis as measures of surface roughness. Two types of surfaces are computationally generated: abraded surfaces consisting of surface scratches, and corrugated surfaces, consisting of hemispherical features. It was found that abraded surfaces could be well described by the skewness and kurtosis,...Go to contribution page
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Ms Mona Braim (Memorial University)14/06/2016, 19:40Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)The main objective of this work was to investigate the binding capabilities of the newly synthesized bimodal triazole-calix[4]arene functionalized microcantilevers towards selected heavy metals in aqueous solution. Gold-coated microcantilever sensors were first modified with a self-assembled monolayer of a calix[4]arene modified at both its upper- and lower-rims. Selected target metal ions...Go to contribution page
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Mr Bassel Alkadour (Department of Physics and Physical Oceanography, Memorial University)14/06/2016, 19:42Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Non-Student) / affiche (non-étudiant)Results from finite temperature stochastic LLG simulations of an atomistic core-shell model of $\gamma$-Fe$_2$O$_3$ spherical nanoparticles are presented. The radial surface anisotropy gives rise to a surface magnetisation with a Neel-like domain wall separating the magnetic poles. It is shown that the pinning of the domain wall by the oxygen anion sites plays an important role in the low...Go to contribution page
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ye li (uwo)14/06/2016, 19:44Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)Strontium aluminate co-doped with europium and dysprosium [SrAl2O4(Eu2+,Dy3+)] is a popular long-lasting (~10 hrs) phosphor for security signs, medical diagnostics, and other applications. Although it has been 20 years since the discovery of persistent luminescence (PL) in SrAl2O4(Eu2+,Dy3+), the associated physical mechanism is still unclear. Electron spin resonance (ESR) is a powerful...Go to contribution page
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Susan Yee14/06/2016, 19:46Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)In $+$ Nb co-doped TiO$_2$ has been previously investigated and shown to display colossal permittivity ($\epsilon_1 >10^3$) for frequencies less than or equal to 1 MHz using impedance spectroscopy. In this work the lattice vibrational contribution to the low frequency dielectric function is studied in ceramic samples at the 0\%,5\%, and 10\% doping level using temperature-dependent...Go to contribution page
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chen wei (Memorial University of Newfoundland)14/06/2016, 19:48Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)Pyrochlores have the chemical formula A$_2$B$_2$O$_7$ with A, B or both magnetic. It has corner-sharing tetrahedra in the structure, therefore, frustration phenomena naturally occurs in these systems. Because of the frustration, pyrochlore have many interesting properties, including the spin glass in Y$_2$Mo$_2$O$_7$, spin liquid in Tb$_2$Ti$_2$O$_7$, disordered spin ice in Ho$_2$Ti$_2$O$_7$,...Go to contribution page
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Mr Thameur Hajlaoui (INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE (INRS))14/06/2016, 19:50Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)The study of Ba2LnFeNb4O15 (TTB-Ln) bulk ceramics revealed that they have a tetragonal tungsten bronze crystal structure, are ferroelectric and that a magnetic phase of barium hexaferrite BaFe12O19 (BaFO) spontaneously forms within the TTB-Ln phase during the ceramic processing, resulting in a novel multiferroic composite material at room temperature. Our goal is to investigate new...Go to contribution page
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Mr Joyprokash Chakrabartty (University of Quebec, INRS-EMT)14/06/2016, 19:52Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)We report the four step ferroelectric polarization switching in BiFeO3(BFO)/SrRuO3 (SRO)/BiMnO3(BMO) heterostructure thin films. All crystalline films are grown on (100) oriented Niobium doped SrTiO3 (NSTO) single crystal substrates by pulsed laser deposition. We found a novel four step ferroelectric polarization switching dynamics that clearly differs from that of individual layers. The...Go to contribution page
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Denis Morris (Unniversité de sherbrooke)14/06/2016, 19:54Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Non-Student) / affiche (non-étudiant)CONTENT For this work, Si and SiGe nanowires (NWs) were grown in a hot-wall reduced pressure chemical vapor deposition system via the vapor-liquid-solid mechanism on both silicon and sapphire substrates using gold as a catalyst. These NW samples were characterized using optical-pump terahertz-probe (OPTP) transmission experiments. The influence of the experimental conditions on the...Go to contribution page
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John Malcolm (University of Guelph)14/06/2016, 19:56Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)The two-dimensional dice lattice is the pseudospin-1 analogue the pseudospin-1/2 Dirac material graphene. The dice-lattice low-energy excitation spectrum consists of the Dirac cone dispersion found also in graphene, with an additional dispersionless flat band intersecting the Dirac point. We present theoretical results for the electronic dynamical polarization function in the material. This...Go to contribution page
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Mr Pedro Ponte (University of Waterloo / Perimeter Institute)14/06/2016, 19:58Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)Generic ergodic quantum many-body systems under periodic driving, in the long-time limit, are described by an infinite temperature canonical ensemble. In the presence of disorder, heating can be prevented in a certain regime (e.g. high frequency), and many-body localized (MBL) systems are stable under periodic driving. The precise value of the transition has relied on exact diagonalization and...Go to contribution page
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Maureen Reedyk (Brock University)14/06/2016, 20:00Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Non-Student) / affiche (non-étudiant)
Cd$_2$Re$_2$O$_7$ is a pyrochlore superconductor with a transition temperature (T$_C$) near 2 K. The results of Raman scattering and far-infrared reflectance measurements will be presented. The temperature dependence of optical phonons has been investigated above and below T$_C$ via IR spectroscopy, and as a function of Oxygen and Cadmium isotope substitution in the normal state via Raman...
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Ross Cheriton (University of Ottawa)14/06/2016, 20:02Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
The InGaN/GaN material system is a promising candidate for the growth of highly efficient solar cells. With direct nanowire growth on silicon, superior light trapping properties at low costs are possible. With the introduction of quantum well superlattices, intermediate states well below the bandgap of GaN enable the absorption of lower energy photons that would otherwise pass through the...
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