Synchronization of intrinsic Josephson junctions for THz electromagnetic wave oscillator

2014 Fiscal Year Final Research Report

• Project/Area Number: 25889063
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Electronic materials/Electric materials
• Research Institution: Toyota National College of Technology
• Principal Investigator: OIKAWA Dai 豊田工業高等専門学校, 電気・電子工システム学科, 助教 (40707808)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Keywords: 高温超伝導 / ジョセフソン接合

Outline of Final Research Achievements

First, we have investigated crystal growth condition of high quality Bi-2212 single crystals using self-flux melting method. We have successfully optimized amount of flux and obtain high quality Bi-2212 single crystals.
Then, Synchronization of intrinsic Josephson junctions involved self-heating effect deeply. These self-heating effects were investigated numerical simulations and pulse current measurement techniques. In the result, the effect of contact resistance between crystal and electrodes is measurable. So we have found this effect deteriorate Josephson junctions properties.

Free Research Field

電子物性