High-Temperature Superconductivity in a Single Copper-Oxygen Plane

被引:210
作者
Logvenov, G. [1 ]
Gozar, A. [1 ]
Bozovic, I. [1 ]
机构
[1] Brookhaven Natl Lab, Upton, NY 11973 USA
关键词
2-DIMENSIONAL SYSTEMS; OXIDES; FILMS; SUPERLATTICES; HETEROSTRUCTURES; INTERFACE; PHYSICS; PHASE;
D O I
10.1126/science.1178863
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The question of how thin cuprate layers can be while still retaining high-temperature superconductivity (HTS) has been challenging to address, in part because experimental studies require the synthesis of near-perfect ultrathin HTS layers and ways to profile the superconducting properties such as the critical temperature and the superfluid density across interfaces with atomic resolution. We used atomic-layer molecular beam epitaxy to synthesize bilayers of a cuprate metal (La1.65Sr0.45CuO4) and a cuprate insulator (La2CuO4) in which each layer is just three unit cells thick. We selectively doped layers with isovalent Zn atoms, which suppress superconductivity and act as markers, to show that this interface HTS occurs within a single CuO2 plane. This approach may also be useful in fabricating HTS devices.
引用
收藏
页码:699 / 702
页数:4
相关论文
共 27 条
[1]   CORRELATIONS BETWEEN MAGNETIC AND SUPERCONDUCTING PROPERTIES OF ZN-SUBSTITUTED YBA2CU3O6+X [J].
ALLOUL, H ;
MENDELS, P ;
CASALTA, H ;
MARUCCO, JF ;
ARABSKI, J .
PHYSICAL REVIEW LETTERS, 1991, 67 (22) :3140-3143
[2]   Mapping the spatial distribution of charge carriers in LaAlO3/SrTiO3 heterostructures [J].
Basletic, M. ;
Maurice, J. -L. ;
Carretero, C. ;
Herranz, G. ;
Copie, O. ;
Bibes, M. ;
Jacquet, E. ;
Bouzehouane, K. ;
Fusil, S. ;
Barthelemy, A. .
NATURE MATERIALS, 2008, 7 (08) :621-625
[3]  
BEREZINSKII VL, 1971, SOV PHYS JETP-USSR, V32, P493
[4]   Suppression of the superconducting condensate in the high-T-c cuprates by Zn substitution and overdoping: Evidence for an unconventional pairing state [J].
Bernhard, C ;
Tallon, JL ;
Bucci, C ;
De Renzi, R ;
Guidi, G ;
Williams, GVM ;
Niedermayer, C .
PHYSICAL REVIEW LETTERS, 1996, 77 (11) :2304-2307
[5]   SUPERCONDUCTING OXIDE MULTILAYERS AND SUPERLATTICES - PHYSICS, CHEMISTRY, AND NANOENGINEERING [J].
BOZOVIC, I ;
ECKSTEIN, JN ;
VIRSHUP, GF .
PHYSICA C, 1994, 235 :178-181
[6]   Atomic-layer engineering of superconducting oxides:: Yesterday, today, tomorrow [J].
Bozovic, I .
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2001, 11 (01) :2686-2695
[7]  
Bozovic I., 1996, PHYS PROPERTIES HIGH, P99
[8]   Magnetic effects at the interface between non-magnetic oxides [J].
Brinkman, A. ;
Huijben, M. ;
Van Zalk, M. ;
Huijben, J. ;
Zeitler, U. ;
Maan, J. C. ;
Van der Wiel, W. G. ;
Rijnders, G. ;
Blank, D. H. A. ;
Hilgenkamp, H. .
NATURE MATERIALS, 2007, 6 (07) :493-496
[9]   Collective pinning of a frozen vortex liquid in ultrathin superconducting YBa2Cu3O7 films [J].
Calame, M ;
Korshunov, SE ;
Leemann, C ;
Martinoli, P .
PHYSICAL REVIEW LETTERS, 2001, 86 (16) :3630-3633
[10]   CORRELATED ELECTRONS IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].
DAGOTTO, E .
REVIEWS OF MODERN PHYSICS, 1994, 66 (03) :763-840