Design and performance of parallel-channel nanocryotrons in magnetic fields

Author:

Draher Timothy12ORCID,Polakovic Tomas3ORCID,Li Yi1ORCID,Pearson John14ORCID,Dibos Alan14ORCID,Meziani Zein-Eddine3ORCID,Xiao Zhili12ORCID,Novosad Valentine13ORCID

Affiliation:

1. Materials Science Division, Argonne National Laboratory 1 , Lemont, Illinois 60439, USA

2. Department of Physics, Northern Illinois University 2 , Dekalb, Illinois 60115, USA

3. Physics Division, Argonne National Laboratory 3 , Lemont, Illinois 60439, USA

4. Center for Nanoscale Materials, Argonne National Laboratory 4 , Lemont, Illinois 60439, USA

Abstract

We introduce a design modification to conventional geometry of the cryogenic three-terminal switch, the nanocryotron (nTron). The conventional geometry of nTrons is modified by including parallel current-carrying channels, an approach aimed at enhancing the device's performance in magnetic field environments. The common challenge in nTron technology is to maintain efficient operation under varying magnetic field conditions. Here, we show that the adaptation of parallel channel configurations leads to an enhanced gate signal sensitivity, an increase in operational gain, and a reduction in the impact of superconducting vortices on nTron operation within magnetic fields up to 1 T. Contrary to traditional designs that are constrained by their effective channel width, the parallel nanowire channels permits larger nTron cross sections, further bolstering the device's magnetic field resilience while improving electro-thermal recovery times due to reduced local inductance. This advancement in nTron design not only augments its functionality in magnetic fields but also broadens its applicability in technological environments, offering a simple design alternative to existing nTron devices.

Funder

Office of Science

Nuclear Physics

Basic Energy Sciences

Division of Materials Sciences and Engineering

Microelectronics Initiative

Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division under

Publisher

AIP Publishing

Subject

Physics and Astronomy (miscellaneous)

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