Superconductivity in nano- and micro-patterned high quality single crystalline boron-doped diamond films

2018 ◽  
Vol 90 ◽  
pp. 181-187 ◽  
Author(s):  
Taisuke Kageura ◽  
Masakuni Hideko ◽  
Ikuto Tsuyuzaki ◽  
Shotaro Amano ◽  
Aoi Morishita ◽  
...  
Keyword(s):  
Diamond Films ◽  
Boron Doped Diamond ◽  
High Quality ◽  
Single Crystalline ◽  
Boron Doped ◽  
Crystalline Boron

scholarly journals Single-crystalline boron-doped diamond superconducting quantum interference devices with regrowth-induced step edge structure

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Taisuke Kageura ◽  
Masakuni Hideko ◽  
Ikuto Tsuyuzaki ◽  
Aoi Morishita ◽  
Akihiro Kawano ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Josephson Junction ◽  
Current Density ◽  
Quantum Interference ◽  
Boron Doped Diamond ◽  
Edge Structure ◽  
Single Crystalline ◽  
Superconducting Quantum Interference Devices ◽  
Boron Doped ◽  
Crystalline Boron

Abstract Superconducting quantum interference devices (SQUIDs) are currently used as magnetic flux detectors with ultra-high sensitivity for various applications such as medical diagnostics and magnetic material microstructure analysis. Single-crystalline superconducting boron-doped diamond is an excellent candidate for fabricating high-performance SQUIDs because of its robustness and high transition temperature, critical current density, and critical field. Here, we propose a fabrication process for a single-crystalline boron-doped diamond Josephson junction with regrowth-induced step edge structure and demonstrate the first operation of a single-crystalline boron-doped diamond SQUID above 2 K. We demonstrate that the step angle is a significant parameter for forming the Josephson junction and that the step angle can be controlled by adjusting the microwave plasma-enhanced chemical vapour deposition conditions of the regrowth layer. The fabricated junction exhibits superconductor–weak superconductor–superconductor-type behaviour without hysteresis and a high critical current density of 5800 A/cm2.

Dopant Uniformity and Concentration in Boron Doped Single Crystal Diamond Films

2012 ◽  
Vol 1395 ◽  
Author(s):  
Shannon. N. Demlow ◽  
I. Berkun ◽  
M. Becker ◽  
T. Hogan ◽  
T.A. Grotjohn
Keyword(s):  
Single Crystal ◽  
Microwave Plasma ◽  
Growth Parameters ◽  
Diamond Films ◽  
Boron Doped Diamond ◽  
High Quality ◽  
Boron Doped ◽  
Single Crystal Diamond ◽  
Wide Range ◽  
Boron Level

ABSTRACTHigh quality single crystal boron-doped diamond films are deposited in a microwave plasma-assisted CVD reactor with feedgas mixtures including hydrogen, methane, diborane, and carbon dioxide at reactor pressures of 160 Torr. The effect of diborane levels and other growth parameters on the incorporated boron levels are investigated, and the doping efficiency is calculated over a wide range of boron concentrations. The boron level is investigated using infrared absorption, and compared to SIMS measurements, and defects are shown to affect the doping uniformity.

Stress study of HFCVD boron-doped diamond films by X-ray diffraction measurements

2001 ◽  
Vol 10 (3-7) ◽  
pp. 750-754 ◽  
Author(s):  
N.G. Ferreira ◽  
E. Abramof ◽  
E.J. Corat ◽  
N.F. Leite ◽  
V.J. Trava-Airoldi
Keyword(s):  
Diamond Films ◽  
X Ray Diffraction ◽  
Boron Doped Diamond ◽  
X Ray ◽  
Boron Doped ◽  
Stress Study

High-speed synthesis of heavily boron-doped diamond films by in-liquid microwave plasma CVD

2019 ◽  
Vol 92 ◽  
pp. 41-46 ◽  
Author(s):  
Yohei Harada ◽  
Ryota Hishinuma ◽  
Nicolae Spătaru ◽  
Yusei Sakurai ◽  
Kazuya Miyasaka ◽  
...  
Keyword(s):  
High Speed ◽  
Microwave Plasma ◽  
Diamond Films ◽  
Plasma Cvd ◽  
Boron Doped Diamond ◽  
Boron Doped ◽  
Microwave Plasma Cvd

scholarly journals Flux pinning and improved critical current density in superconducting boron doped diamond films

2018 ◽  
Vol 2 (4) ◽  
pp. 045015 ◽  
Author(s):  
Dinesh Kumar ◽  
Shibnath Samanta ◽  
K Sethupathi ◽  
M S Ramachandra Rao
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Flux Pinning ◽  
Diamond Films ◽  
Boron Doped Diamond ◽  
Boron Doped

Secondary Electron Emission from Boron Doped Diamond Films Grown by MPCVD

2013 ◽  
Vol 28 (5) ◽  
pp. 688-692
Author(s):  
丁明清 DING Ming-qing ◽  
李莉莉 LI Li-li ◽  
冯进军 FENG Jin-jun
Keyword(s):  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
Diamond Films ◽  
Boron Doped Diamond ◽  
Boron Doped

Optical and electrical characterization of boron-doped diamond films

1995 ◽  
Vol 4 (5-6) ◽  
pp. 678-683 ◽  
Author(s):  
R. Locher ◽  
J. Wagner ◽  
F. Fuchs ◽  
M. Maier ◽  
P. Gonon ◽  
...  
Keyword(s):  
Diamond Films ◽  
Electrical Characterization ◽  
Boron Doped Diamond ◽  
Boron Doped
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