Northwestern Events Calendar

Nov
21
2014

Art Ramirez : Frustration in Materials: Past, Present, and Future

When: Friday, November 21, 2014
4:00 PM - 5:00 PM CT

Where: Technological Institute, L211, 2145 Sheridan Road, Evanston, IL 60208 map it

Audience: Faculty/Staff - Student - Public

Contact: Liz Lwanga   13645

Group: Physics and Astronomy Colloquia

Category: Academic

Description:

Title: Frustration in Materials: Past, Present, and Future

Speaker: Art Ramirez, UC Santa Cruz

Abstract: Frustration is loosely defined as the incompatibility of interacting degrees of freedom and the lattices they occupy.  This incompatibility suppresses conventional long range ordering and yet examples are found in common materials such as water ice.  I will discuss realizations of frustration in magnetic systems which display spin ice and spin liquid formed from emergent degrees of freedom.  While readily studied in magnets, the concept ties together seemingly disparate systems such as water ice, negative thermal expansion dielectrics, and candidate materials for quantum computation.  I will illustrate some basic concepts with examples of known compounds and present ideas for future directions.


Host: William Halperin

Speaker Schedule

Keywords: Physics, Astronomy, colloquium

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