Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session T00: Poster Session III (1pm-4pm PST)
1:00 PM,
Thursday, March 9, 2023
Room: Exhibit Hall (Forum Ballroom)
Sponsoring
Unit:
APS
Abstract: T00.00024 : Doping dependence of the critical current properties in Bi2.2Sr1.8CaCu2O8+δ single crystals*
Presenter:
Junichiro Kato
(Tokyo University of Science)
Authors:
Junichiro Kato
(Tokyo University of Science)
YUTARO MINO
(Tokyo University of Science)
PVAN KUMAR NAIK SUGALI
(Tokyo University of Science)
Taichiro Nishio
(Tokyo University of Science)
Shungo Nakagawa
(University of Tsukuba)
Takanari Kashiwagi
(University of Tsukuba)
Hiroshi Eisaki
(National Institute of Advanced Industrial Science and Technology)
Shigeyuki Ishida
(National Institute of Advanced Industrial Science and Technology)
In this study, we focused on Bi2Sr2CaCu2O8+δ (Bi2212), where p can be tuned over a wide range by controlling the excess oxygen content δ. By repeating the p control and Jc evaluation on the same Bi2212 single crystal sample, the influence of crystal characteristics (chemical composition, defect structure, etc.) on Jc was reduced. Thus, a systematic p dependence of Jc was successfully obtained. Notably, we found that Jc unexpectedly increases in the underdoped region at low temperatures. In the meeting, we will report the results in detail and discuss the possible origin of the enhancement of Jc.
*This work was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (21H01377) grants.
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