Previous Events
To see the upcoming events and seminars, please check the Events page.
| Event Name | Date, Time and Host | Summary |
|---|---|---|
| A Semi-Localized Transport (SLoT) Model for Chemically Doped Semiconducting Polymers |
Chemically doped semiconducting polymers exhibit electronic transport characteristics that range from localized (or hopping-like) transport to delocalized (or metal-like) transport. While a multitude of electronic transport models have been proposed, none of… Show more Speaker: Prof. Shannon Yee |
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| Quantum Mechanics in Phase Space |
TBA
Speaker: Prof. Thomas Curtright, University of Miami |
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| Synthesis, Magnetic Behavior and Neutron Diffraction of Triangular Magnetic Materials |
Triangular magnetic structures have gained considerable interest due to their rich magnetic behavior and structural simplicity. These structures contain the motif of a triangle as the main structural feature, leading to geometric frustration and implicitly to… Show more Speaker: Prof. Duminda Sanjeewa, MURR |
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| Nanopore Unzip-Sequencing – exploration in biomolecular interactome and next generation information storage |
DNA is a new generation material for molecular data storage, with a potential storage capacity several orders of magnitude greater than current methods. Data stored in DNA can be encoded (written) and decoded (read) using sequencing technologies. Advantages of DNA… Show more Speaker: Andrew Gu, MU Bioengineering |
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| Magnetism in Nanostructures studied with Neutron Scattering |
Magnetic systems on the range of nanometers are of great interest for application as well as fundamental physics. When macroscopic magnetic materials are scaled down to the nanoscale the energy balance changes and single-domain and super-paramagnetic states arise.… Show more Speaker: Dr. Artur Glavic |
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| A soft X-ray coherent view of electronic properties in correlated systems, via Resonant X-ray Scattering |
Claudio Mazzoli will present some opportunities of scientific investigation by micro-spectro-scattering in the soft X-ray regime of Resonant X-ray Scattering, as implemented and developed at CSX (the Coherent Soft X-ray scattering beamline of NSLS-II, BNL). The… Show more Speaker: Claudio Mazzoli, BNL |
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| Spontaneous cluster formation in stoichiometric quantum critical systems |
Metallic systems with magnetic ions embedded which have been prepared to undergo a second-order phase transition at zero Kelvin, namely the quantum critical systems, historically appear to fall into two distinct categories: (chemically) heavily-doped systems in which… Show more Speaker: Alex Bretana |
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| Transition Metal Ions in Molten Salts: Octahedral Networks and Intermediate-Range Order |
The microscopic structure and dynamics of molten salts is a fascinating subject. It is a very diverse family of materials; while molten NaCl is a simple mix of single-valence ions with a minimal structural organization, transition-metal ions form chains of octahedra… Show more Speaker: Boris Khaykovich |
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| Using machine-learning methods to model RNA-ligand interactions |
Convolutional neural network (CNN) and graph convolutional network (GCN) has gained huge success in various tasks, from image classification, video processing to speech recognition and natural language understanding. The success stems from both the well-designed… Show more Speaker: Yuanzhe Zhou, MU Physics |
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| TBA | Speaker: Gavin King, MU, Department of Physics and Astronomy |
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| Physics majors present their research |
Ben Krewson: Defect Dynamics and Selection for Quenched Striped Patterns
We study transverse modulational dynamics of striped pattern formation in the wake of a directional quenching mechanism. Such mechanisms have been proposed to control pattern-forming… Show more Speaker: Ben Krewson, Troy Schneider, Lauryn Williams, Brandon Lee |
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| Observation of the Layer Hall Effect in Topological Axion Antiferromagnet MnBi2Te4 |
While ferromagnets have been known and exploited for millennia, antiferromagnets were only discovered in the 1930s. The elusive nature indicates antiferromagnets’ unique properties: At large scale, due to the absence of global magnetization, antiferromagnets may… Show more Speaker: Prof. SuYang Xu, Department of Chemistry, Harvard University |
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| Water Ice and Spin Ice: Ground States and Topological Defects |
Our planet is called Earth, but based on the surface composition, perhaps it should have been called Water. Despite the ubiquitous presence on our planet, water's solid form, ice does not readily enter the ground state upon cooling, owing to residual disorder of… Show more Speaker: Prof. John Cumings, University of Maryland College Park |
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| TBD |
Abstract TBD
Speaker: Marco Govoni |
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| Nanoscale confinement towards a one-dimensional superfluid |
In one spatial dimension, enhanced thermal and quantum fluctuations should preclude the existence of any long range ordered superfluid phase of matter. Instead, the quantum liquid should be described at low energies by an emergent hydrodynamic framework known… Show more Speaker: Adrian Del Maestro, University of Tennessee |
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| Electron and ion dynamics in materials due to particle radiation and optical excitation |
Materials manipulation via ion or laser beams can achieve precisely tuned atomic geometries that are necessary, e.g. to engineer interactions between defects in quantum materials and for fabricating novel electronic devices with nanoscale dimensions. In addition,… Show more Speaker: Andre Schleife, UIUC |
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| Loop extrusion, chromatin crosslinking, and the geometry, topology and mechanics of chromosomes and nuclei |
The chromosomes of eukaryotic cells are based on tremendously long DNA molecules that must be replicated and then physically separated to allow successful cell division. I will discuss what we have learned about chromosome structure from our group's biophysical… Show more Speaker: John F. Marko, Northwestern University |
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| Exploring anyons and black holes-like dynamics in flatland |
The world and the Universe we live in are composed of fermions and bosons. The quantum statistics of these particles overwhelmingly governs what we see around us. But one could wonder, can other kinds of quantum particles exist? I will begin this… Show more Speaker: Smitha Vishveshwara, UIUC |
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| Strongly-interacting systems: from fractional quantum Hall effect to field-theoretic dualities |
Quantum systems with strong interaction exist in many branches of physics and present a challenge for theory. We will discuss some recent methods to solve the problem, focusing on one particular example: the fractional quantum Hall fluid. Many phenomena… Show more Speaker: Prof. Dam Thanh Son, University of Chicago |
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| Control of Magnetization in Topological Insulator/Magnetic Insulator Heterostructures |
Spintronics-based technology, which uses spins to represent and propagate information, holds promise to realize devices that surpass the current CMOS transistor technology in power, density and speed. For example, magnetic random-access memory (MRAM) based on… Show more Speaker: Prof. Peng Li, Auburn University |
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| Journal Club |
This week the Condensed Matter Journal Club will feature rehearsals of student and faculty talks for the the March meeting of the APS.
Speaker: March Meeting Rehearsals |
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| Hunting for topological phases amidst Hofstadter butterflies and disordered landscapes |
In this talk, I will discuss rich topological behavior in two related models – the Majorana wire and a Su-Schrieffer-Heeger ladder- in the presence of potential energy landscapes. An introduction of the two models and of techniques that directly provide information… Show more Speaker: Smitha Vishveshwara, UIUC |
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| Climatic and Humanitarian Impacts of Nuclear War |
A nuclear war between any two nations, such as India and Pakistan, with each country using 50 Hiroshima-sized atom bombs as airbursts on urban areas, could inject 5 Tg of soot from the resulting fires into the stratosphere, so much smoke that the resulting climate… Show more Speaker: Dr. Alan Robock, Rutgers University |
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| Fundamentals of Amorphous Oxide Semiconductors |
Amorphous oxide semiconductors (AOS)—ternary or quaternary oxides of post-transition metals—have attracted a lot of attention due to high carrier mobility which is an order of magnitude larger than that of amorphous silicon (a-Si:H). Unlike Si-based semiconductors,… Show more Speaker: Julia Medvedeva, University of Missouri S&T |
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| Combined Magnetic Tweezers-TIRF microscopy for studying DNA-protein interactions |
Magnetic tweezers allow the user to apply force and torque to magnetic beads attached to single DNA molecules, and to observe the resulting changes in DNA extension. This technique, however, is limited to measuring a single degree of freedom: the distance between the… Show more Speaker: Maria Mills, MU Physics |
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| Manifestations of band geometry in linear and nonlinear transport |
I will describe how the geometry of the band structure of metals manifests itself in their optical and transport properties. I particular, I will show that the natural optical activity of metals, equivalent to the so-called dynamic chiral magnetic effect, stems from… Show more Speaker: Dmytro Pesin, University of Virginia |