Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session Z42: Topological Semimetals
11:30 AM–2:30 PM,
Friday, March 10, 2023
Room: Room 318
Sponsoring
Unit:
DMP
Chair: Saurav Islam, Pennsylvania State University
Abstract: Z42.00011 : Thermomechanical Nanomolding of Topological Materials
1:54 PM–2:06 PM
Presenter:
Quynh Sam
(Cornell University)
Authors:
Quynh Sam
(Cornell University)
Mehrdad T Kiani
(Cornell University)
Gangtae Jin
(Cornell University)
Betul Pamuk
(Cornell University)
James L Hart
(Cornell University)
Hyeuk Jin Han
(Sungshin Women's University)
Judy J Cha
(Cornell University)
We used TMNM to fabricate nanowires from topological triple-point metal MoP and CoSn. Due to their symmetry-protected surface states, these materials have enhanced electronic properties that make them attractive candidates for next-generation interconnects. High-resolution S/TEM analysis reveals formation of single-crystal nanowires with uniform composition along the wire length. Surprisingly, we find that metastable Mo4P3 is formed from the MoP feedstock, demonstrating that elevated temperatures, pressures, and interfacial effects in TMNM can provide a novel route to access metastable states. Four probe measurements show low resistivity values for both Mo4P3 and CoSn. Thus, we present TMNM as a high throughput fabrication method to form nanowires of topological materials with controlled structure and potential for applications in computing technologies.
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