University of Arkansas，USA

报告人简介：

Prof. Jak Chakhalian received his PhD in condensed matter physics from the University of British Columbia (Canada) in 2002, and became a postdoctoral researcher at TRIUMF Canada’s National Research Facility in 2003. After that he moved to Max Planck Institute for Solid State Research as a fellow. He began to work in University of Arkansas since 2006, and became the Charles and Claudine Scharlau Endowed Chair and Professor of Physics, and the Director of Laboratory for Artificial Quantum Materials of University of Arkansas in 2012. He has got the John Imhoff Outstanding Research Award from Sigma Xi Society in 2010, and the Gordon and Betty Moore Foundation award in 2014.

报告摘要:
Complex oxides are a class of materials characterized by a variety of competing interactions that create a subtle balance to define the lowest energy state and lead to a wide diversity of intriguing properties ranging from high Tc superconductivity to exotic magnetism and orbital phenomena. By utilizing the bulk properties of these materials as a starting point, interfaces between different classes of complex oxides offer a unique opportunity to break the fundamental symmetries present in the bulk and alter the local environment. Utilizing our recent advances in oxide growth, we can now combine materials with distinct or even antagonistic order parameters to create new materials in the form of heterostructures with atomic layer precision. The broken lattice symmetry, strain, and altered chemical and electronic environments at the interfaces then provide a unique laboratory to manipulate this subtle balance and enable novel quantum states not attainable in bulk. Understanding of these phases however requires detailed microscopic studies of the heterostructure properties. In this talk I will review our recent work on extreme unit-cell thin nickelate, titanates and cupratemanganite heterostructures to illustrate recently uncovered principles of rational materials design and control of quantum many-body phenomena by the interface.

联 系 人：于冰（82649361）