Event | Date | Summary |
Aldo Romero, West Virginia University, Designing materials: a synergistic process between theory, experiment and belief | Mon. April 22nd, 2019 12:45 am-1:45 am |
Designing materials: a synergistic process between theory, experiment and belief Aldo Romero, Dept. of Physics and Atronomy, West Virginia University, Morgantown The scientific process of designing materials has changed in the last ten years, as now theoretical methods have advanced to the level of becoming predictive, materials databases are increasing in size and experiments are more accurate and detailed. In this synergistic path, methods that combine all these methodologies are ideal, as long as we manage to condense the necessary design details into a series of fundamental material parameters. In this talk, I will discuss the atomistic process to design materials from scratch by using theoretical methods only based on the chemical composition and with little knowledge on the desired material or property of interest. |
Horacio Castillo, Ohio University, Strong fluctuations in the relaxation of a 2D granular fluid | Mon. April 15th, 2019 12:45 am-1:45 am |
Strong fluctuations in the relaxation of a 2D granular fluid Horacio Castillo, Department of Physics and Astronomy, Ohio University Glass transitions are associated with a rapid increase of the |
Vladimir Dobrosavljevic, Florida State University, Geometrically Frustrated Coulomb Liquids | Mon. April 8th, 2019 12:45 pm-1:45 pm |
Geometrically Frustrated Coulomb Liquids
We show[1] that introducing long-range Coulomb interactions immediately lifts the massive |
Shixiong Zhang, Indiana University, Controlled Synthesis and Emergent Properties of Heavy Transition Metal Oxides and Sulfides | Mon. March 18th, 2019 12:45 pm-1:45 pm |
Controlled Synthesis and Emergent Properties of Heavy Transition Metal Oxides and Sulfides Shixiong Zhang Department of Physics, Indiana University, Bloomington, IN, USA Heavy transition metal compounds (e.g. oxides and sulfides) often possess strong spin-orbit coupling (SOC) because of their high atomic numbers and electron correlation due to their compact d-orbitals. The competition and interplay of SOC and electron interactions is believed to induce a variety of novel electronic and magnetic ground states. In this talk, I will present our recent experimental work on two representative material systems, namely iridates and layered metal sulfides which exhibit a broad spectrum of intriguing physical properties. |
Shulei Zhang, Argonne National Laboratory, From Giant Magnetoresistance to Nonlinear Magnetoresistance in Quantum Materials – An Exciting Journey with Spin | Fri. March 1st, 2019 12:45 pm-1:45 pm |
From Giant Magnetoresistance to Nonlinear Magnetoresistance in Quantum Materials – An Exciting Journey with Spin Shulei Zhang Condensed Matter Theory Group, Materials Science Division, Argonne National Laboratory Abstract: Ever since its surprising emergence from relativistic quantum mechanics, spin has been known as an intrinsic angular momentum that plays a crucial role in electronic structure of matter. When the flows of spin and charge become intertwined through spin-orbit coupling or nontrivial magnetic structures, a host of intriguing magnetotransport phenomena emerge, such as giant magnetoresistance, spin Hall, topological Hall etc. |
Hanna Terletska, Middle Tennessee State University,Understanding quantum materials using computational methods. | Wed. February 27th, 2019 12:45 pm-1:45 pm |
Functional quantum materials, including Mott insulators and high temperature superconductors, are at the forefront of modern materials science and condensed matter physics research. These materials are being actively explored for transformative technological applications, including efficient energy generation, storage and transmission. Understanding the fundamental mechanisms behind the exotic phases of matter emerging in quantum materials is a grand challenge, which must be overcome to maximize technological advancement.            Due to the complexity of the many-electron problem, analytic theories become often unreliable and numerical treatment is required. Over the past decades, numerical analysis has become a very powerful tool for studying strongly correlated electron systems. |
Li Ge, City University of New York, Exploring non-Hermitian symmetries and topology using synthetic photonic materials | Mon. February 25th, 2019 12:45 pm-1:45 pm |
In this talk I will discuss how synthetic photonic materials can be utilized to explore several non-Hermitian symmetries and their topological implications. Although difficult to access in high-energy physics and conventional condensed matter systems, these non-Hermitian symmetries can be realized in photonic materials with carefully arranged gain and loss elements. Therefore, such synthetic photonic materials provide an ideal platform to explore the ramification of these symmetries, including parity-time (PT) symmetry and non-Hermitian particle-hole symmetry, as well as the resulting novel optical phenomena and functionalities. PT symmetric photonics [1] is one of the fastest growing fields in the past five years. |