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    • 6. 发明授权
    • Process of increasing the critical temperature Tc of a bulk superconductor by making metal heterostructures at the atomic limit
    • 通过使金属异质结构在原子极限上提高体超导体的临界温度Tc的方法
    • US06265019B1
    • 2001-07-24
    • US08646321
    • 1996-08-26
    • Antonio Bianconi
    • Antonio Bianconi
    • H01L3912
    • H01L39/128H01L39/121
    • A method of forming Supercondtuctors with high critical temperature is described in which heterostructures at the atomic limit are realized artificially by molecular beam epitaxy, sputtering, lithography, chemical synthesis, electrochemical deposition or other similar technologies, made by a plurality of first portions of a superconducting metallic material forming a lattice of substantially equal elements with constant period &lgr;p, at least in a first direction (y), and a plurality of second portions formed by a material with different electronic structure from that of the first portions, intercalated to the first portions to realize the separation between said first portions; the heterostructure is characterized by the fact that the plurality of first portions have a size (L) and a period (&lgr;p) as to satisfy the condition for the shape resonance condition for the electrons at the Fermi level and the plurality of second portions have a size (W) smaller or of the order of the superconducting Pippard coherence length &xgr;0 of the superconducting material forming the first portions.
    • 描述了形成具有高临界温度的超导体的方法,其中通过分子束外延,溅射,光刻,化学合成,电化学沉积或其它类似技术由超导体的多个第一部分人造地实现了原子极限的异质结构 金属材料,至少在第一方向(y)上形成具有恒定周期长度的基本相同的元件的格子,以及由具有不同于第一部分的电子结构的材料形成的多个第二部分,插入到第一部分 以实现所述第一部分之间的分离; 异质结构的特征在于,多个第一部分具有尺寸(L)和周期(lambdp),以满足在费米能级的电子的形状共振条件的条件,并且多个第二部分具有 尺寸(W)小于或形成第一部分的超导材料的超导Pippard相干长度&xgr.0的顺序。