SUPERCONDUCTING FLUX-FLOW TRANSISTORS WITH SUBMICROMETER STRUCTURES

被引：12
作者：
KUSUNOKI, M
AKAIKE, H
FUJIMAKI, A
HAYAKAWA, H
机构：
[1] Department of Electronics, Nagoya University, Nagoya 464-01, Furo-cho, Chikusa-ku
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1995年 / 5卷 / 02期
关键词：
D O I：
10.1109/77.403319
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A miniaturization of high critical temperature (T-c) superconducting flux flow transistor (SFFT) was studied. The weak link width in the direction of the vortex flow was varied from 5 mu m to 10 mu m. The weak link length in the direction of bias current flow was fixed to 5 mu m. An increase in the gain was observed as the weak link width decreased. A control line was placed close to the weak link in the distance of 0.5 mu m to compensate for a decrease of magnetic sensitivity due to the miniaturization. We also improved the characteristics of the SFFT by forming a corrugated structure, which is named corrugation flux flow transistor (CFFT). A submicron patterning of YBa2Cu3Oy (YBCO) thin film was performed using focused ion beam lithography. Furthermore, we demonstrated a micro flux flow transistor (MFFT) consisting of a single bridge. The MFFT also operated as well as the CFFT.
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收藏
页码：3389 / 3392
页数：4
相关论文
共 8 条
[1]   SUBMICROMETER-SCALE PATTERNING OF SUPERCONDUCTING NB FILMS USING FOCUSED ION-BEAM [J].
AKAIKE, H ;
FUJIMAKI, A ;
TAKAI, Y ;
HAYAKAWA, H .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1992, 31 (4A) :L410-L412
[2]  
FUJIMAKI A, 1994, INT WORKSHOP HIGH TE, P206
[3]   A SINGLE-CHIP SQUID HAVING AN IMPROVED SUPERCONDUCTING STORAGE LOOP [J].
FUJIMAKI, N ;
TAMURA, H ;
SUZUKI, H ;
IMAMURA, T ;
HASUO, S ;
SHIBATOMI, A .
IEEE TRANSACTIONS ON ELECTRON DEVICES, 1989, 36 (11) :2628-2629
[4]   PLANAR COUPLING SCHEME FOR ULTRA LOW-NOISE DC SQUIDS [J].
JAYCOX, JM ;
KETCHEN, MB .
IEEE TRANSACTIONS ON MAGNETICS, 1981, 17 (01) :400-403
[5]   SUBMICRON PATTERNING TECHNIQUE FOR YBA2CU3OY FILMS USING FOCUSED ION-BEAM LITHOGRAPHY [J].
KUSUNOKI, M ;
AKAIKE, H ;
FUJIMAKI, A ;
HAYAKAWA, H .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1994, 33 (8A) :L1124-L1127
[6]   A Model and Equivalent Circuit for a Superconducting Flux Flow Transistor [J].
Martens, J. S. ;
Ginley, D. S. ;
Beyer, J. B. ;
Nordman, J. E. ;
Honenwarter, G. K. G. .
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1991, 1 (02) :95-101
[7]   S-PARAMETER MEASUREMENTS AND MICROWAVE APPLICATIONS OF SUPERCONDUCTING FLUX FLOW TRANSISTORS [J].
MARTENS, JS ;
HIETALA, VM ;
ZIPPERIAN, TE ;
GINLEY, DS ;
TIGGES, CP ;
PHILLIPS, JM .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1991, 39 (12) :2018-2025
[8]  
MARTENS JS, 1989, 1989 P INT IEEE MTT, P443
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