Evan O’Leary, Graduate Student at Iowa State University presents Electronic Structure of Rare-earth Diantimonide LaSb2. Experimental investigation of electronic structure is essential to our theoretical understanding of how macroscopic properties arise due to quantum interactions. Angle-resolved photoemission spectroscopy (ARPES) is one method used to study the electronic structure of materials. Hear a brief overview of ARPES and discuss the electronic structure of the rare-earth diantimonide LaSb2. Rare-earth diantimonides exhibit many interesting properties such as super-conductivity, charge density wave ordering, and different magnetic phases. The compound LaSb2 is the only member of this family found to be non-magnetic. However, it does undergo a charge density wave ordering at TCDW = 355 K and enters a superconducting state at Tc = 1.2 K. Also presented will be ARPES data above and below TCDW , and a demonstration that there are no apparent changes in the electronic structure due to the CDW ordering.
