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由法國波爾多大學(xué)與中國留學(xué)基金委聯(lián)合支持的博士生項目
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赴波爾多Buzdin教授課題組攻讀博士學(xué)位。Buzdin教授是著名的超導(dǎo)和凝聚態(tài)物理學(xué)家、 法國大學(xué)研究院資深院士。曾在Reviews of Modern Physics、Physical Review Letters 等期刊發(fā)表論文近200篇，請感興趣的同學(xué)盡快和我聯(lián)系，謝謝！ 語言要求：English Test: TOEFL PbT (min 550), or TOEFL (ibT min 79) or IELTS ( min 6.5) or TOEIC (min 685) or proof of CEFR level B2 in English or French 項目支持：由法國波爾多大學(xué)與中國留學(xué)基金委聯(lián)合支持 申請截止日期：2015年2月20日 聯(lián)系人：李軍 Email: junli@nju.edu.cn CALL FOR PROPOSALS UNIVERSITY OF BORDEAUX, FRANCE CHINA SCHOLARSHIP COUNCIL - PhD SCHOLARSCHIPS Project supervisor (name, surname, phone, email): Prof. A. Buzdin (Bouzdine), Honoraire member of the Institut Universitaire de France phone : +(33) 5 40 00 25 02 a.bouzdine@loma.u-bordeaux1.fr Laboratory: University of Bordeaux, (LOMA) Laboratoire Ondes et Matière d 'Aquitaine (UMR 5798) Doctoral School: University of Bordeaux, SCIENCES PHYSIQUES ET DE L'INGENIEUR PhD Research Offer (title and short presentation) Superconducting Spintronics It is generally accepted that the semiconductor electronics will reach its physical limits within the next decade. Different alternative technologies are under active development in many countries: a lot of attention is paid to the superconducting and spin electronics (spintronics) because they both offer much higher operating frequencies with the fundamentally lower switching energies. However in superconducting electronics the basic element should contain a single flux quantum which translates to a μm-length scales. In spintronics, the large charge currents required to generate the necessary spin current densities for the active devices to operate are very large which results in considerable Joule heating even in research-scale devices. The very new concept of superconducting spintronics permits to eliminate the above constraints associated with superconducting- and spin-based electronics’. In addition to potential applications, superconducting spintronics concerns a novel type of superconducting pairing state which is fundamentally interesting and important in its own right. The proposed research is based on the theoretical study of the proximity effect in the hybrid supraconductor (S)-ferromagnet (F) structures. These structures seem to be very promising for realizing the basic elements of supraconducting spintronics. Though the coexistence of singlet superconductivity with ferromagnetism is very unlikely in bulk compounds, it may be easily achieved in artificially fabricated layered ferromagnet/ superconductor (F/S) systems. Due to the proximity effect, the Cooper pairs can penetrate into the F layer and induce superconductivity there. In such a case we have a unique opportunity to study the properties of superconducting electrons under the influence of a large exchange field. In addition, it is possible to study the interplay between superconductivity and magnetism in a controlled manner, since by varying the layer thicknesses we change the relative strengths of two competing orderings. It is very important to elaborate the electrodynamics of multylayered SF systems including the interplay between magnetic excitations and superconducting properties and investigate the conditions to modify the magnetic states via the superconducting current. Such materials look very promising to be a new kind of metamaterials and therefore the suggested subject fits perfectly the LabEx AMADEus (Material Science) of University of Bordeaux. The planned works will extend the studies of the mutual interaction between Josephson current and magnetic moment, initiated in our group, which is considered as a world recognized leader in this domain. |
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