Title:
遷移金属カルコゲナイドのトポロジカル結晶体及びその形成方法
Document Type and Number:
Japanese Patent JP4183067
Kind Code:
B2
Abstract:
Disclosed is a transition-metal chalcogenide crystal having a topological configuration/structure. A micro-droplet of a chalcogen element, such as S, Se or Te, is condensed and circulated in suspended form in an atmosphere containing a Group IVb, Vb or VI transition metal element, such as Nb, Ta, Zr, Ti, Hf or W, together with the chalcogen element. Then, micro-whiskers of a transition metal chalcogenide formed in the atmosphere are attached onto a surface of the chalcogen-element micro-droplet by the action of a surface tension of the micro-droplet, and grown as a loop-shaped crystal wound around the surface of the micro-droplet to obtain a loop-shaped crystal having a twist of 0, pi or 2pi. The crystal has a ribbon-like open or closed loop configuration. The transition-metal chalcogenide crystal with the topological loop-shaped microstructure can exhibit original properties peculiar to each transition-metal chalcogenide, and has applicability, for example, to a quantum device, such as SQUID.
Inventors:
Satoshi Tanda
Takune Tsuneda
Yoshitoshi Okajima
Katsuhiko Inagaki
Kazuhiko Yamatani
Noriyuki Hatanaka
Takune Tsuneda
Yoshitoshi Okajima
Katsuhiko Inagaki
Kazuhiko Yamatani
Noriyuki Hatanaka
Application Number:
JP2002340094A
Publication Date:
November 19, 2008
Filing Date:
November 22, 2002
Export Citation:
Assignee:
Japan Science and Technology Agency
International Classes:
C01B19/04; C01G33/00; C01G23/00; C01G25/00; C01G27/00; C01G35/00; C01G41/00; C30B11/12; C30B23/00; C30B29/66
Domestic Patent References:
| JP52078793A | ||||
| JP8073300A | ||||
| JP8026886A |
Attorney, Agent or Firm:
Takao Iriko