In the last decades the failure of the BCS paradigm of superconductivity in several correlated materials led to a profound modification of the description of the superconducting phenomenon itself. A case in point is the occurrence of Cooper pairing and phase coherence at distinct temperatures in strongly disordered superconductors. In this seminar I will discuss the electromagnetic properties of such systems based on studies of the attractive Hubbard model with strong on-site disorder and by including fluctuations beyond the Bogoljubov-de Gennes approach. It turns out that current correlations, responsible for the Meissner effect, have a long-range tail due to the formation of percolative current paths while at finite frequencies phase modes acquire a dipole moment and appear as a subgap spectral feature in the optical conductivity.
See the colloquium schedule and its archive of previous talks
Colloquia are scheduled to start Mondays at 11:15am sharp in Peterson Hall 2, Room 126 (PH2-126). Refreshments are served from 10:45am to 11:05am in Room HSCI-224 (next to the department office) and everyone is invited to mingle with faculty and students!
We acknowledge with gratitude donations and support from the following present sponsors:
We also acknowledge with gratitude our past donors: The Forty-Niner Shops, Inc., The Northrop Grumman Foundation, Sandra Dana, Anonymous.
If you wish to support the Colloquium, please contact the colloquium coordinator or the department chair. Thank you!
|Date||Title||Speaker and Affiliation|
|August 31||Meet & Mix CSULB Faculty and Staff||Faculty and Staff|
|September 14||Light Nuclei, the Universe, and Everything||Kenneth Nollett, Department of Physics, San Diego State University|
|September 21||Looking for unconventional quantum states in layered materials & heterostructures||Claudia Ojeda-Aristizabal, CSULB|
|September 28||Magnetoresistance Measurements on SmB6 – Cornering the Parameter Space of an Illusive Correlated Topological Insulator||Cagliyan Kurdak, University of Michigan|
|October 5||The Role of Physics in Medicine: Examples from X-Ray Computed Tomography||M. McNitt-Gray, UCLA Radiology|
|October 12||Searching for the dark universe with matter wave interferometry||P. Hamilton, UCLA|
|October 19||From Physics to Data Science||D. Benveniste, EMC Corporation|
|October 26||Heating up Quantum Mechanics||S. Parameswaran, UC Irvine|
|October 29-31||Annual Meeting of the APS Far West Section||Conference Webpage|
The Unpredictable, the Predetermined, and the Postdetermined Unfold Together
|R.G. James, UC Davis|
|November 9||Quadratic Magneto Optical Kerr Effect and Chirality of Magnetization Reversal in Py/SmFe/Py Exchange Springs||Jiyeong Gu, CSULB|
|November 16||Magnetic Force Microscopy of Magnets with Competing Interactions||Yeong-Ah Soh|
Confining Energetic Ions in Magnetic Fusion Experiments
Dept. of Physics & Astronomy,
|December 2||Student Presentations I||CSULB students|
|December 7||Student Presentations II||CSULB students|
|December 9||Student Presentations III||CSULB students|
|January 25||Time Fluctuations in Quantum Systems Out-of-Equilibrium||Lorenzo Campos Venuti, USC|
|February 1||Functionalizing Graphene for Spintronics and Quantum Information Applications: Density Functional Studies||Ruqian Wu, UCI|
|February 8||Anyonics: Designing Exotic Circuitry with Non-Abelian Anyons||Kirill Shtengel, UCR|
|February 22||On the Dynamics of Planets, Stars and Black Holes – New Insights from Triples||Smadar Naoz, UCLA|
|February 24||Investigating Complexity One Atom at a Time||Eric Hudson, Penn State University|
|March 7||The Search for Supersymmetry at the LHC: News from the Front Lines||Owen Long, UC Riverside|
|March 14||...||.., USC|
|March 21||Dark Sunshine||Flip Tanedo, UC Irvine|