MRI: Acquisition of an oxide molecular beam epitaxy system

University Of California-Santa Barbara, Santa Barbara CA

Investigators

Abstract

Technical Abstract Research programs in oxides at the University of California, Santa Barbara (UCSB) span a wide range of applications, including as dielectrics, semiconductors, thermoelectrics and memristive devices. Many of these research activities are central to interdisciplinary programs and centers and all support graduate student education and training. These programs require oxide thin films with low defect densities, high purity, compatibility with active electronic device structures, low interface trap states and near-monolayer control over layer thicknesses. To address these needs, we propose to acquire a versatile, state-of-the-art oxide molecular beam epitaxy (MBE) system that will significantly expand capabilities for the synthesis of highly-perfect oxide thin films and structures, as needed to solve key problems in the development of new devices with oxides and in the materials physics of oxide structures. The project will contribute to advancing oxide MBE through the development of approaches to address issues such as stoichiometry control and poor volatility of constituents. In keeping with the tradition of UCSB's MBE Laboratory, the proposed oxide MBE system is designed to facilitate compatibility and accessibility and will be operated as a shared facility, impacting the training of a large number of students in interdisciplinary research programs at UCSB and at collaborating institutions. Graduate students and postdoctoral scholars are the primary users and oxide MBE will be the central focus of many Ph.D. dissertations. Two development engineers provide hands-on training in MBE while formal training is provided by a graduate course and weekly MBE seminars. The oxide MBE system will significantly expand research internship opportunities offered through education programs that target undergraduate and high-school students from underrepresented minority groups. Non-Technical Abstract Research programs in oxide materials at the University of California, Santa Barbara (UCSB) span a wide range of applications, such as new electronic devices and energy conversion. Many of these research activities are central to interdisciplinary programs and centers and all support graduate student education and training. These programs require the deposition of thin film oxides with exceptionally low defect densities and high purity, comparable to what is now standard for conventional semiconductor materials. To address these needs, we propose to acquire a versatile, state-of-the-art molecular beam epitaxy (MBE) system for the deposition of thin film oxides. In keeping with the tradition of UCSB's MBE Laboratory, the proposed oxide MBE system will be operated as a shared facility, impacting the education and training of a large number of students in a wide range of interdisciplinary research programs at UCSB and at collaborating institutions. Graduate students and postdoctoral scholars are the primary users. Two development engineers provide hands-on training in MBE while formal training is provided by a graduate course and weekly MBE seminars. The oxide MBE system will significantly expand research internship opportunities offered through education programs that target undergraduate and high-school students from underrepresented minority groups.