Observation of supercurrent distribution in YBCO thin film devices by photoexcited THz radiation

被引：3

作者：

Hangyo, M ^{[1
]}

Shikii, S

Yamashita, M

Kondo, T

Tonouchi, M

Tani, M

Sakai, K

机构：

[1] Osaka Univ, Res Ctr Superconducting Mat & Elect, Suita, Osaka 5650871, Japan

[2] MPT, Kansai Adv Res Ctr, Commun Res Lab, Kobe, Hyogo 6512401, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1999年 / 9卷 / 02期

关键词：

D O I：

10.1109/77.783669

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 new method of imaging supercurrent distribution in high-T-c superconducting film devices using the photoexcited THz radiation is proposed and demonstrated. The images are obtained by scanning focused femtosecond laser pulses on superconducting film devices with detecting the THz radiation. The characteristic distribution of the transport and persisting currents is obtained and interpreted in terms of the Bean critical state model.

引用

页码：3038 / 3041

页数：4

共 10 条

[1] MAGNETIZATION OF HIGH-FIELD SUPERCONDUCTORS [J].

BEAN, CP .

REVIEWS OF MODERN PHYSICS, 1964, 36 (1P1) :31-+

[2] Terahertz radiation from superconducting YBa2Cu3O7-delta thin films excited by femtosecond optical pulses [J].

Hangyo, M ;

Tomozawa, S ;

Murakami, Y ;

Tonouchi, M ;

Tani, M ;

Wang, Z ;

Sakai, K ;

Nakashima, S .

APPLIED PHYSICS LETTERS, 1996, 69 (14) :2122-2124

[3]

Hangyo M, 1997, IEICE T ELECTRON, VE80C, P1282

[4] Direct observation of the current distribution in thin superconducting strips using magneto-optic imaging [J].

Johansen, TH ;

Baziljevich, M ;

Bratsberg, H ;

Galperin, Y ;

Lindelof, PE ;

Shen, Y ;

Vase, P .

PHYSICAL REVIEW B, 1996, 54 (22) :16264-16269

[5]

SHIKII S, 1998, ADV SUPERCONDUCTIVIT, V10, P1231

[6] SUBPICOSECOND PHOTOCONDUCTING DIPOLE ANTENNAS [J].

SMITH, PR ;

AUSTON, DH ;

NUSS, MC .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1988, 24 (02) :255-260

[7] Ultrashort electromagnetic pulse radiation from YBCO thin films excited by femtosecond optical pulse [J].

Tonouchi, M ;

Tani, M ;

Wang, Z ;

Sakai, K ;

Tomozawa, S ;

Hangyo, M ;

Murakami, Y ;

Nakashima, SI .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1996, 35 (5A) :2624-2632

[8] Novel terahertz radiation from flux-trapped YBa2Cu3O7-delta thin films excited by femtosecond laser pulses [J].

Tonouchi, M ;

Tani, M ;

Wang, Z ;

Sakai, K ;

Wada, N ;

Hangyo, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1997, 36 (2A) :L93-L95

[9] MAGNETIC-FLUX MAPPING, MAGNETIZATION, AND CURRENT DISTRIBUTIONS OF YBA2CU3O7 THIN-FILMS BY SCANNING HALL PROBE MEASUREMENTS [J].

XING, W ;

HEINRICH, B ;

ZHOU, H ;

FIFE, AA ;

CRAGG, AR .

JOURNAL OF APPLIED PHYSICS, 1994, 76 (07) :4244-4255

[10]

ZELDOV E, 1994, PHYS REV B, V49, P9802, DOI 10.1103/PhysRevB.49.9802

← 1 →