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oai:figshare.com:article/34037893 2026-10-01T03:05:11Z category_1 category_146 category_16 category_21 category_873 category_39 portal_63 item_type_6 month_year_10_2026

Mechanically Exfoliated Metallic Delafossite PdCoO₂ Nanomembranes: Quantum Transport and Electrical Evaluation toward Interconnect Applications Chengyu Zhu (8107226) Pahuni Jain (25150972) Yi Zhang (9093) Junghyun Koo (25150975) Weideng Sun (24238167) Yaotian Li (25150978) Alexander McLeod (25150981) Chris Leighton (1424005) Gang Qiu (84387) Biophysics Space Science Physiology Biotechnology Chemical Sciences not elsewhere classified Ecology excellent thermal stability electron effective mass breakdown current density quality nanoscale devices mesoscopic transport studies 40 nm thickness toward interconnect applications mechanically exfoliated pdcoo coherent electronic transport beyond quantum transport 2 </ sub quantum transport interconnect applications electronic quality e </ nearly thickness useful platform ultralow resistivity temperature resistivity results demonstrate report single magnetoresistance oscillations low temperatures limited access independent room enabling exploration electromigration resistance electrical performance drawn attention de haas crystalline pdcoo bulk crystals Metallic delafossite oxides have drawn attention for their ultralow resistivity and coherent electronic transport. However, mesoscopic transport studies are hindered by the limited access to high-quality nanoscale devices. Here, we report single-crystalline PdCoO₂ nanomembranes, enabling exploration of quasi-two-dimensional (quasi-2D) transport. Shubnikov-de Haas and angle-dependent <i>h/e</i> magnetoresistance oscillations under different magnetic field directions are observed at low temperatures, from which the electron effective mass is extracted. Beyond quantum transport, the electrical performance of PdCoO₂ toward interconnect applications is evaluated. A nearly thickness-independent room-temperature resistivity is observed for flakes down to 40 nm thickness. The nanomembranes exhibit a breakdown current density up to 113 MA cm^–2, with excellent thermal stability and electromigration resistance. These results demonstrate that mechanically exfoliated PdCoO₂ flakes preserve the high crystalline and electronic quality of bulk crystals in the quasi-2D limit, providing a useful platform for mesoscopic transport studies and interconnect applications. 2026-09-30T00:00:00Z Text Journal contribution 10.1021/acs.nanolett.6c03008.s001 https://figshare.com/articles/journal_contribution/Mechanically_Exfoliated_Metallic_Delafossite_PdCoO_sub_2_sub_Nanomembranes_Quantum_Transport_and_Electrical_Evaluation_toward_Interconnect_Applications/34037893 CC BY-NC 4.0