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CAMP: Nematicity and other stories: Quantum materials in the two-dimensional limit

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Abhay Pasupathy, Columbia University
When
14 October 2014 from 3:30 PM to 4:30 PM
Where
339 Davey Laboratory
Contact Name
Jie Shan
Contact Phone
(814) 865-7533
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Quasi 2D materials have long been known as a playground for observing a wide variety of quantum phenomena. Traditionally, such quasi 2D materials have been produced at interfaces or heterostructures of 3D materials. The advent of graphene introduced a whole new class of 2D materials - ones that can be manipulated easily by electrical, mechanical and optical means. Graphene itself for the most part is well understood by the independent electron model. Can we think of materials with more complex quantum phases that we can take to the 2D limit? I will discuss the iron pnictides and cuprates as two examples of materials where achieving the 2D limit can give us fundamental new insight into the nature of their complex electronic structure. I will then discuss the practical difficulties in reaching the 2D limit in real materials systems and highlight some recent success along this path.

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