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A Theory of Specific Heat Discontinuity of the Superconducting Crystals by Using the Linear Model for Critical Magnetic Field
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ÃÊÀüµµ °áÁ¤ÀÇ ÀÓ°è ¿Âµµ TCH¿¡¼ÀÇ ºñ¿ ºÒ¿¬¼Ó ÆøÀ», Gibbs ÀÚÀ¯ ¿¡³ÊÁö¿¡ °üÇÑ ¿¿ªÇÐ °ü°è½Ä°ú ÀÓ°è ÀÚ±âÀå TCHÀÇ ¼±Çü ¸ðµ¨À» ÀÌ¿ëÇÏ¿©, Àΰ¡ ÀÚ±âÀå HÀÇ ÇÔ¼ö·Î ÀÌ·ÐÀûÀ¸·Î ±¸ÇÑ´Ù. ±×¸®°í ±¸ÇÑ ºñ¿ ºÒ¿¬¼Ó ÆøÀ» J. Kacmarcik µî¿¡ ÀÇÇÑ MgCNi3 ÃÊÀüµµÃ¼ °áÁ¤ ´ë»óÀÇ ½ÇÇè °á°ú¿Í ºñ±³ ºÐ¼®ÇÑ´Ù. ¿©±â¼ ±¸ÇÑ ºñ¿ ºÒ¿¬¼Ó ÆøÀº ÃÊÀüµµÃ¼ °áÁ¤ÀÇ ºñ¿ Á¡ÇÁ ¾÷ Çö»óÀ» Àß ¼³¸íÇÑ´Ù.
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We derive a gap of specific heat discontinuity of superconducting crystals theoretically at the critical temperature TCH as an explicit function of applied magnetic field H by using the thermodynamic relations for Gibbs free energy and the linear model for the critical magnetic field TCH. The derived a gap of specific heat discontinuity is compared with experimental results by J. Kacmarcik et al. for superconducting MgCNi3 crystal. Our specific heat gap function well explain the jump up phenomena of the superconducting crystals.
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ABSTRACT
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