Spring 2022

High Resolution Imaging of Excited State Dynamics in Nanomaterials

Speaker(s): 
Martin Gruebele
Dates: 
Friday, April 1, 2022 - 1:00pm

A Pitt Chem Seminar

Abstract: Two topics will be covered in the general area of tunneling microscopy: looking at surface dynamics of glasses on a millisecond to hour scale, and excited state dynamics of nanomaterials on the sub-picosecond to nanosecond scale, both with sub-nm resolution. The technique of “SMA-STM” works by shining modulated light on a sample and detecting the resulting change in electron density with an STM tip, which also enhances the evanescent light wave that excites the sample. I’ll show that we can build energy landscapes of glass...

Levy and Givi wins 2022 Provost’s Award for Excellence in Doctoral Mentoring

  • By Jennifer Zheng
  • 15 March 2022

Congratulations to Jeremy Levy and Peyman Givi for receiving the 2022 Provost’s Award for Excellence in Doctoral Mentoring. 

The Provost’s Award for Excellence in Doctoral Mentoring will annually recognize outstanding mentoring of graduate students seeking a research doctorate degree. Up to four awards will be made each year. . .

Want to promote diversity in science? Offer better support.

  • By Jennifer Zheng
  • 15 March 2022

Growing up in Patna, India, I imagined that there would be a better representation of women in physics in the United States. But after arriving at the University of California, Santa Barbara, to begin my graduate studies in 1988, I was sorely disappointed to learn that I was the only woman in a class of 36 PhD students.

The situation has improved marginally since then. In 2019, for example, women received 20% of both undergraduate and PhD degrees in physics in the . . .

 

Probing Quantum Materials with Scanning Probe Microscopy

Speaker(s): 
Yonglong Xie
Dates: 
Thursday, March 10, 2022 - 3:30pm

A CMU-Pitt Colloquium

Abstract: Electrons inside matter can behave as complex particles that do not exist in the Standard Model. These seemingly impossible effects are examples of emergent phenomena—that is, unexpected collective behavior—of electrons in quantum materials. The discovery and characterization of new emergent phenomena in quantum materials not only expand the boundary of our knowledge, but also provide unique opportunities for future quantum technologies. However, these effects often manifest in subtle ways, and thus detecting them requires...

Vincent Sokalski receive grant for AMPED Consortium

  • By Jennifer Zheng
  • 15 February 2022

Congratulations to Vincent Sokalski for winning a grant for the AMPED Consortium. Read the CMU MSE article below! 

McHenry, Sokalski receive planning grant for Advanced Magnetics for Power and Energy Development (AMPED) Consortium. The Advanced Magnetics for Power and Energy Development (AMPED) Consortium has received a planning grant from the National Science Foundation (NSF) through its prestigious Industry-University Cooperative Research Centers Program (IUCRC).

Van der Waals polaritons: From fundamental probes to applications

Speaker(s): 
Brian Kim
Dates: 
Monday, February 28, 2022 - 3:30pm

A CMU-Pitt Colloquium

Abstract: Quantum materials host exotic states of matter with unique macroscopic phenomena, ranging from various correlated electron states to topological orders. The ability to manipulate and probe their emergent behavior with nanoscale precision is at the forefront of condensed matter research and underlies the future progress of new electronic and photonic technologies. Polaritonic platforms utilizing hybrid light-matter excitations with extreme light confinement enable a unique form of experimental inquiry into the...

Understanding emergent quantum phenomena in the real world

Speaker(s): 
Mengxing Ye
Dates: 
Monday, February 14, 2022 - 2:30pm

A CMU-Pitt Colloquium

Abstract: With the advancements in quantum materials research, the emergent quantum many-body phenomena, such as competing orders, topological order and fractionalization, can be realized in much more controllable ways. 

However, resolving them experimentally can be challenging. In this talk, I will tell two stories of understanding the emergent phenomena in quantum materials, with setups both in and out of equilibrium. First, I will discuss our theory of the charge orders in recently extensively studied Vanadium based kagomé...

Designer Quantum Materials

Speaker(s): 
Shouvik Chatterjee
Dates: 
Monday, February 21, 2022 - 11:15am

A CMU-PITT Colloquium

Abstract: Quantum materials provide an exciting platform to realize emergent phenomena and topological properties in condensed matter systems. Our ability to synthesize these materials with atomic precision enables us to rationally design quantum structures with tailored properties. In this talk, I will provide examples of such an approach using thin film synthesis by molecular-beam epitaxy that allows access to tuning parameters, such as, interfacial engineering and dimensional confinement, and the creation of artificial...

Light-Matter Interaction in Flatland: Excitonic Physics in 2D

Speaker(s): 
Sufei Shi
Dates: 
Thursday, February 10, 2022 - 2:00pm

A CMU-PITT Colloquium

Abstract: The emergence of the two-dimensional (2D) transition metal dichalcogenides (TMDCs) ushers in a new era of light-matter interaction, offering exciting opportunities in quantum information science (QIS). In monolayer TMDCs, the reduced screening enhances the Coulomb interaction and gives rise to strongly bound excitons with the binding energy of hundreds of meV. In addition, the excitons in TMDCs possess a new quantum degree of freedom, valley-spin, which is promising for quantum information processing and can be accessed...

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