Mr. Christopher St. John Profile

Christopher St. John

at Sandia National Labs

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 3 October 2023 Presentation + Paper

Nanostructured thin films for Meissner-effect transition-edge-sensor devices

P. Finnegan, C. Arrington, C. St. John, S. Carr

Proceedings Volume 12653, 1265304 (2023) https://doi.org/10.1117/12.2677134

KEYWORDS: Niobium, Resistance, Thin films, Superconductors, Tin, Nanostructured thin films, Photoresist materials, Semiconducting wafers, Temperature metrology, Metals

Read Abstract +

We present experimental results from the microfabrication and characterization of nanostructured thin films within prototype devices, which we refer to as Meissner-effect transition-edge-sensors, that may ultimately be utilized for sensing applications including microscale magnetometry and microcalorimetry. For the devices reported here, the change in magnetic flux from a microscale disk of electrodeposited tin may be detected by a planar pickup coil consisting of a niobium nanostructured thin film. The optimization of the nanostructured thin films requires sufficient control of sputtering deposition parameters including chamber pressure, gas flow, and power. Multiple mechanisms provide nanostructured pathways for infiltration of the niobium thin film during deposition. The nanostructured thin films were experimentally characterized in terms of thickness, stress, room-temperature resistivity, and resistance as a function of temperature. We find that the superconducting transition temperature for the niobium nanostructured thin film pickup coils spans a significant range from approximately 4 Kelvin to 11 Kelvin depending on the sputtering deposition parameters. We target operation in the regime where the microscale tin disk is in the transition between the normal and superconducting states but the nanostructured thin film pickup coil is fully superconducting and therefore compatible with Superconducting Quantum Interference Device (SQUID) readout.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years