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Department News and Colloquium

Physics & Astronomy Colloquium at CSU Long Beach


Quantum Phenomena and Layered Heterostructures

Claudia Ojeda-Aristizabal,
UC Berkeley

Monday, February 25, 2015
11:15am, MMC-100
(Refreshments served at 10:40am in HSCI-224)

Fig: Graphene with C60 molecules (buckyballs) on top forming an electronic device

Graphene, the one atom thick layer of carbon, has opened a fruitful field of research in condensed matter physics. Having reached a suitable understanding of graphene’s fundamental properties and applications, scientists are now turning their attention to structures composed of different 2D crystals. Significant effort has been put into the production of 2D crystals other than graphene, from thin insulators (like hexagonal boron nitride) to thin semiconductors (like molybdenum disulfide). Combination of these materials into structures named van der Waals heterostructures could allow for the engineering of tunable phenomena at the interface. In this talk, I will give an introduction to the Physics of graphene and I will describe two different quantum phenomena that can be observed in this two dimensional crystal:universal conductance fluctuations and superconducting proximity effect. I will present tunable phenomena that can be found at the interface between graphene and other materials like pentacene, a well-known organic semiconductor, and C60, the 0-dimensional version of graphene. To conclude, I will expose layered materials that rest unexplored and layered heterostructures that can lead us to exciting Physics.

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 110 (PH2-110, map). 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!


For information and suggestions about the colloquium please contact the colloquium coordinator:
Prof. Prashanth Jaikumar, Phone: 562-985-5592, Email:

Directions to Campus

  • Access to Campus
  • Campus Maps
  • Parking on campus: contact the coordinator of the colloquium. If not reachable, call the department office (562) 985-7925. If none of these are available at the time you need information, call (562) 985-4146 or go to the drive-through information booth at the main campus entrance (on Beach Drive, near the crossing to Bellflower).
  • Walk (or ask for a ride on an on-campus shuttle) to the department office: Hall of Sciences, Room 220 (HSCI-220). The coordinator will provide the necessary informations.
  • Any question or problem: call the colloquium coordinator or the department office (562) 985-7925.

Colloquia Sponsors:

We acknowledge with gratitude donations and support from the following present sponsors:

  • H.E. and H.B. Miller
  • Benjamin Carter
  • The American Physical Society
  • Anonymous

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!

Academic Year 2014-2015

Date Title Speaker and Affiliation
February 2,2015 Rapid Sequencing of Individual DNA Molecules with Graphene Nanogaps Henk Postma, CSUN
February 9, 2015 Probing and Controlling Ultrafast Electron Motion with Attosecond Transient Absorption Spectroscopy Michael Chini, UCF
February 11, 2015 Transparent Conducting Oxide Active Plasmonics and Metasurfaces: Ultrasmall and Ultrathin Optics Howard Lee, Caltech
February 16, 2015 Nuclear Magnetic Resonance in Condensed Matter Physics: Unconventional Superconductivity, Quantum Magnetism, and Other Magnificent Tales Georgios Koutroulakis, UCLA
February 18, 2015 Few-body Physics in Ultracold Atoms: Observation of Geometric Scaling Symmetry in Li-Cs-Cs Efimov States Shih-Kuang Tung, NU
February 23, 2015 Molding Light with Flat Optics Myoung Hwan Kim, Columbia U.
February 25, 2015 Quantum Phenomena and Layered Heterostructures Claudia Ojeda-Aristizabal, UCB

Colloquia Schedule