Superconductivity of a striped phase at the atomic limit

被引:146
作者
Bianconi, A
Valletta, A
Perali, A
Saini, NL
机构
[1] Univ Rome La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[2] Univ Rome La Sapienza, INFM, I-00185 Rome, Italy
来源
PHYSICA C | 1998年 / 296卷 / 3-4期
关键词
T-c amplification; superlattice of quantum wires; superconductivity; heterostructures at the atomic limit;
D O I
10.1016/S0921-4534(97)01825-X
中图分类号
O59 [应用物理学];
学科分类号
摘要
The resonant amplification of the superconducting critical temperature, the isotope effect, the change of the chemical potential in a particular 2D striped phase formed by superconducting stripes of width L alternated by separating stripes of width W with a period lambda(p) the atomic limit is studied. The critical temperature shows a 'shape resonance' by tuning the charge density where the chemical potential mu is in the range E-n < mu < E-n + (h) over bar omega(0), where E-n is the bottom of the nth superlattice subband for n > 2, and (h) over bar omega(0) is the energy cutoff for the pairing interaction. The maximum critical superconducting temperature is reached at the cross-over from 2D to ID behavior. The particular properties of this electronic phase and its similarities with the normal and superconducting propel-ties of doped cuprate perovskites are discussed. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:269 / 280
页数:12
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