Sahu, SK and Vaidya, J and Schmidt, F and Jangade, D and Thamizhavel, A and Steele, G and Deshmukh, MM and Singh, V (2019) Nanoelectromechanical resonators from high-T c superconducting crystals of Bi2Sr2Ca1Cu2O<IMG ALIGN=MIDDLE ALT=-8+δ. In: 2D Materials, 6 (2).
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Abstract
In this report, we present nanoelectromechanical resonators fabricated with thin exfoliated crystals of a high-T c cuprate superconductor Bi2Sr2Ca1Cu2O. The mechanical readout is performed by capacitively coupling their motion to a coplanar waveguide microwave cavity fabricated with a superconducting alloy of molybdenum-rhenium. We demonstrate mechanical frequency tunability with external dc-bias voltage, and quality factors up to ∼36 600. Our spectroscopic and time-domain measurements show that mechanical dissipation in these systems is limited by the contact resistance arising from resistive outer layers. The temperature dependence of dissipation indicates the presence of tunneling states, further suggesting that their intrinsic performance could be as good as other two-dimensional atomic crystals such as graphene.
| Item Type: | Journal Article |
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| Publication: | 2D Materials |
| Publisher: | IOP Publishing Ltd |
| Additional Information: | The copyright for this article belongs to the Author(s). |
| Keywords: | Coplanar waveguides; Copper compounds; High temperature superconductors; NEMS; Resonators; Temperature distribution, High-Tc cuprates; Mechanical exfoliation; Microwave cavity; Nanoelectromechanical resonator; Superconducting alloys; Superconducting crystal; Time domain measurement; Two-level system, Superconducting resonators |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 31 Oct 2022 11:28 |
| Last Modified: | 31 Oct 2022 11:28 |
| URI: | https://eprints.iisc.ac.in/id/eprint/77719 |
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