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Josephson¡^¹w´ú¨âÓ¶W¾ÉÅé¦pªG¥Î¤@Ó®zÃì¡]weak link¡^³s±µ¡A¦Ó§Î¦¨¶W¾ÉÅé¡Ð¥¿±`¾ÉÅé¡Ð¶W¾ÉÅé±µ±¡]junction¡^®É¡A¶W¾É¹q¤l·|±q¤@Ãä¬ïÀG¨ì¥t¤@Ãä¥h¡A³oºØ¶W¾Éªº¬ïÀG®ÄÀ³¡]tunneling effect¡^´N¬O©Ò¿×ªº¬ù·æ¤Ò»¹®ÄÀ³¡]¦³ª½¬y©M¥æ¬y¨âºØ®ÄÀ³¡^¡C¬ù·æ¤Ò»¹¤]¦]¦¹°^Äm¦ÓºaÀò1973¦~ªº¿Õ¨©º¸ª«²z¼ú¡C °ª·Å¶W¾ÉÅé¥i¥H¥Î¦UºØ¤èªk²£¥Í±µ±¡A¨ÓÆ[¹î¬ù·æ¤Ò»¹®ÄÀ³¡A¦p¥ÎÂI±µÄ²±µ±¡]point contact junction¡^©Î¯}µõ±µ±¡]break junction¡^¡C¹Ï¤KÅã¥ÜYBa2Cu3O7-X¤§¹q¬y¡Ð¹qÀ£¯S©Ê¦±½u¡A¦b¹qÀ£µ¥©ó¹s®É¤§¬ïÀG¹q¬y®ÄÀ³¬°ª½¬y¬ù·æ¤Ò»¹®ÄÀ³¡C·í¹qÀ£¤£µ¥©ó¹s®É¡A¥~¥[8.8GHz·Lªi«H¸¹©Ò¬Ý¨ìªº¶¥±è§Î«H¸¹¡A¬°¥æ¬y¬ù·æ¤Ò»¹®ÄÀ³¡C ¬ù·æ¤Ò»¹®ÄÀ³»P¥¼¨Ó°ª·Å¶W¾ÉÅ骺¹q¤l¤¸¥ó»s§@©MÀ³¥Î¡A¦³«Ü«¤jªºÃö«Y¡C °Ñ¦Ò¸ê®Æ 1.Bednorz & Müller, z. Physik, B64¡G189,1986. 2.Wu et al., Phys. Rev. Lett., 58¡G1885,1987. 3.Ihara et al., Jpn. J. Appl. Phys., 26¡GL1413, 1987. 4.Ku et al., Chin. J. Phys., Submuitted,1987. 5.Jorgensen et al., Phys. Rev., B36¡G5731, 1987. 6.Moreland et al., Cryogenics, 27¡G227,1987¡F Phys. Rev., B35¡G8711, 1987. 7.Collins et al., Phys. Rev. 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