Observation of Structures of Chain Vortices Inside Anisotropic High- <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></math></span> Superconductors

A. Tonomura; H. Kasai; O. Kamimura; T. Matsuda; K. Harada; T. Yoshida; T. Akashi; J. Shimoyama; K. Kishio; T. Hanaguri; K. Kitazawa; T. Masui; S. Tajima; N. Koshizuka; P. L. Gammel; D. Bishop; M. Sasase; S. Okayasu

doi:10.1103/PhysRevLett.88.237001

Observation of Structures of Chain Vortices Inside Anisotropic High- $T_{c}$ Superconductors

A. Tonomura, H. Kasai, O. Kamimura, T. Matsuda, K. Harada, T. Yoshida, T. Akashi, J. Shimoyama, K. Kishio, T. Hanaguri, K. Kitazawa, T. Masui, S. Tajima, N. Koshizuka, P. L. Gammel, D. Bishop, M. Sasase, and S. Okayasu

Phys. Rev. Lett. 88, 237001 – Published 23 May 2002

Abstract

In order to elucidate the formation mechanism of unconventional arrangements of vortices in high- $T_{c}$ superconducting thin films at an inclined magnetic field to the layer plane, we investigated the structures of vortex lines inside the films by Lorentz microscopy using our 1-MV field-emission electron microscope. Our observation results concluded that vortex lines are tilted to form linear chains in ${YBaCu}_{3} O_{7, 8}$ . Vortex lines in the chain-lattice state in ${Bi}_{2} {Sr}_{2} {CaCu}_{2} O_{8 + δ}$ , on the other hand, are all perpendicular to the layer plane, and therefore only vortices lined up along Josephson vortices form chains.

Received 22 January 2002

DOI:https://doi.org/10.1103/PhysRevLett.88.237001

Authors & Affiliations

A. Tonomura^1,9,10,*, H. Kasai^1,9,10, O. Kamimura^1,9, T. Matsuda^1,9,10, K. Harada^1,9,10, T. Yoshida^1,9, T. Akashi², J. Shimoyama^3,9, K. Kishio^3,9, T. Hanaguri^4,9, K. Kitazawa^4,9, T. Masui⁵, S. Tajima⁵, N. Koshizuka⁵, P. L. Gammel⁶, D. Bishop⁷, M. Sasase⁸, and S. Okayasu⁸

¹Advanced Research Laboratory, Hitachi, Ltd., Hatoyama, Saitama 350-0395, Japan
²Hitachi Instruments Service Co., Ltd., 4-28-8 Yotsuya, Shinjuku-ku, Tokyo 160-0004, Japan
³Department of Applied Chemistry, University of Tokyo, Tokyo 113-8656, Japan
⁴Department of Advanced Materials Science, School of Frontier Sciences, University of Tokyo, Tokyo 113-0033, Japan
⁵International Superconductivity Technology Center (ISTEC), Shinonome, Koto-ku, Tokyo 135-0062, Japan
⁶Agere Systems, Murray Hill, New Jersey 07974-0636
⁷Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974-0636
⁸Japan Atomic Energy Research Institute (JAERI), Tokai, Ibaraki 319-1195, Japan
⁹SORST, Japan Science and Technology Corporation (JST), 3-4-15 Nihonbashi, Chuo-ku, Tokyo 103-0027, Japan
¹⁰Frontier Research System, The Institute of Chemical and Physical Research (RIKEN), Wako, Hirosawa, Saitama 351-0198, Japan