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Thrust 1 – Theory and Modeling

Goal: model the underlying physics and material science governing growth of materials and impact on material properties.

Thrust Leader: Tianshu Li

Thrust investigators: Shengbai Zhang, Dragica Vasileska

Structural signatures of R-SRO and E-SRO in SiGeSn.

Thrust 2 – Synthesis and Control of SRO

Goal: To synthesize SRO with sufficient perfection that its intrinsic properties can be measured. Two different synthesis methods will be unitized, spontaneous and stimulated, to achieve growth of different degrees of SRO and control over the spatial arrangement of SRO domains.

Thrust leader: Yuping Zeng

Thrust investigators: Fisher Yu, Yong-Hang Zhang, Gregory Salamo, Paul McIntyre, Ezra Bussmann, Shashank Misra

Composition map of core/shell nanowire

Thrust 3 – Determination of Degree and Type of SRO

Goal: To characterize thin films by the broad range of techniques and expertise of our team, including APT, HRTEM, XRD, STM, Raman, ARPES, Optical Probes and Electrical Transport, which are all needed as a multimodal approach to observe and understand the degree and type of SRO and the connection to material properties.

Thrust leader: Jifeng Liu

Thrust investigators: Fisher Yu, Ezra Bussmann, Paul McIntyre, Andrew Minor, Hiroyuki Nakamura, Mansour Mortazavi

Reconstructed atomic map of a GeSn tip and Post-reconstruction curvature correction.

Thrust 4 – Transformative Opportunities

Goal: This Thrust crosscuts Thrusts 1-3 utilizing the new knowledge base to uncover the connection between SRO and Group IV alloy semiconductor properties and synthesize SRO functional structures to demonstrate these properties.

Thrust leader: Tzu-Ming Lu

Thrust investigators: Fisher Yu, Jin Hu, Hugh Churchill, Hiroyuki Nakamura, Michael Lilly

Density tunable electron/hole system