Multigap Superconductivity in the Heavy Fermions PrOs4Sb12 and CeCoIn5 Год выпуска: 2010Автор: Gabriel SEYFARTHИздательство: LAP Lambert Academic PublishingСтраниц: 168ISBN: 9783838312613Описание In this work we report thermal conductivity measurements on the heavy fermion superconductors PrOs4Sb12 (Tc~1.75K) and CeCoIn5 (Tc~2.35K). After an introduction to these compounds, particular emphasis is put on the experimental technique, which has allowed reliable measurements down to 10mK and in magnetic fields up to 6.5T. As an original part of this work, we developed a method to fully characterize (quantitatively) the electric thermal contact resistances on the setup. A strong increase in the low temperature field dependence of thermal conductivity in PrOs4Sb12 and CeCoIn5 reveals the existence of a characteristic field scale much smaller than the upper critical field Hc2. This high field sensitivity of heat transport does not correspond to predictions for ordinary type II or unconventional superconductors with gap nodes, but rather supports a multigap superconductivity scenario, reminiscent of the case of MgB2. Moreover, in PrOs4Sb12, the temperature dependence of thermal...
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Olga, 23.10 Огромное Вам спасибо за рефераты, я сегодня их забрала и прочитала, в понедельник поедем сдавать в экстернат. Не могу не сказать Вам, что Вы очень талантливый и тонкий человек. Я хорошо знаю, что образование, каким бы качественным оно не было, не даёт возможности безошибочно почувствовать поставленную задачу. Высокое качество Ваших работ бесспорно, однако меня больше всего поразила точность и артистичность не просто реализации цели и задач исследования, а исполнения АВТОРСКОЙ по духу работы: в нашем случае это не просто рефераты на заданную тему, а рефераты совершенно определённого качественно (в смысле возраста, уровня образования и т.п.) автора. Выражаю Вам своё восхищение, надеюсь на дальнейшее сотрудничество.
