Presentation Information

11:45 AM - 12:00 PM JST(2:45 AM - 3:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9a-A24-11]Development of a SQUID Measurement System for Detecting Time-Reversal Symmetry Breaking in Microscale Superconductors

〇(D)Mitsuhiro Teshigawara¹, Makoto Ono¹, Rikuto Kusumi¹, Hirotake Yamamori^2,3, Yasunori Mawatari², Satoshi Kashiwaya¹ (1.Nagoya Univ., 2.AIST., 3.NAOJ.)

Keywords:

SQUID,Unconventional Superconductor,FIB

Detection of spontaneous magnetic fields is an effective way to investigate the breaking of time-reversal symmetry (TRS). In this study, we propose a SQUID-based measurement system for microscale superconducting samples in order to suppress the cancellation of magnetic fields caused by multiple chiral domains. In the proposed system, a FIB-processed NbSe₂ sample is directly integrated onto a designed and fabricated SQUID loop to enhance the magnetic coupling. In this presentation, we will describe the details of the measurement system and report measurements of the magnetic flux change associated with the superconducting transition, and discuss the effectiveness of this approach toward the investigation of TRS breaking.

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