Magnetism and morphology of Co nanocluster superlattices on GdAu2/Au(111)-(13 x 13)

被引：11

作者：

Cavallin, A. ^{[1
]}

Fernandez, L. ^{[2
]}

Ilyn, M. ^{[3
,4
]}

Magana, A. ^{[5
]}

Ormaza, M. ^{[2
]}

Matena, M. ^{[2
]}

Vitali, L. ^{[3
,4
,6
]}

Ortega, J. E. ^{[2
,3
,4
,5
]}

Grazioli, C. ^{[7
,8
]}

Ohresser, P. ^{[9
]}

Rusponi, S. ^{[1
]}

Brune, H. ^{[1
]}

Schiller, F. ^{[3
,4
]}

机构：

[1] Ecole Polytech Fed Lausanne, ICMP, CH-1015 Lausanne, Switzerland

[2] Donostia Int Phys Ctr, E-20018 Donostia San Sebastian, Spain

[3] CSIC UPV EHU, Ctr Fis Mat, E-20018 Donostia San Sebastian, Spain

[4] Ctr Phys Mat, E-20018 Donostia San Sebastian, Spain

[5] Univ Basque Country, Dept Fis Aplicada 1, E-20018 Donostia San Sebastian, Spain

[6] Ikerbasque, Basque Fdn Sci, E-48011 Bilbao, Spain

[7] Univ Trieste, Dept Chem & Pharmaceut Sci, I-34127 Trieste, Italy

[8] CNR IOM, Lab TASC, I-34149 Trieste, Italy

[9] Synchrotron SOLEIL, LOrme Merisiers, F-91192 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW B | 2014年 / 90卷 / 23期

基金：

瑞士国家科学基金会;

关键词：

SCANNING-TUNNELING-MICROSCOPY; RAY CIRCULAR-DICHROISM; AU(111); COBALT; ANISOTROPY; DOMAINS; GROWTH; ARRAYS; FILMS;

D O I：

10.1103/PhysRevB.90.235419

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a comprehensive study of the magnetism and morphology of an ultrahigh density array of Co nanoclusters self-assembled on the single atomic layer GdAu2 on Au(111) template surface. Combining scanning tunneling microscopy, x-ray magnetic circular dichroism, and magneto-optical Kerr effect measurements, we reveal a significant enhancement of the perpendicular magnetic anisotropy energy for noncoalesced single atomic layer nanoclusters compared to Co/Au(111). For coverages well beyond the onset of coalescence, we observe room-temperature in-plane magnetic remanence.

引用

页数：6

共 37 条

[1] Magnetic anisotropy in Gd, GdN, and GdFe2 tuned by the energy of gadolinium 4f states [J].

Abdelouahed, Samir ;

Alouani, M. .

PHYSICAL REVIEW B, 2009, 79 (05)

[2] MAGNETIC DOMAINS IN THIN EPITAXIAL CO/AU(111) FILMS [J].

ALLENSPACH, R ;

STAMPANONI, M ;

BISCHOF, A .

PHYSICAL REVIEW LETTERS, 1990, 65 (26) :3344-3347

[3] Influence of ligand states on the relationship between orbital moment and magnetocrystalline anisotropy [J].

Andersson, C. ;

Sanyal, B. ;

Eriksson, O. ;

Nordstrom, L. ;

Karis, O. ;

Arvanitis, D. .

PHYSICAL REVIEW LETTERS, 2007, 99 (17)

[4] Element-specific magnetization of a Gd-Co composite system using spin-polarized Auger electron spectroscopy [J].

Anilturk, OS ;

Koymen, AR .

PHYSICAL REVIEW B, 2003, 68 (02)

[5] CRITERION FOR FERROMAGNETISM FROM OBSERVATIONS OF MAGNETIC ISOTHERMS [J].

ARROTT, A .

PHYSICAL REVIEW, 1957, 108 (06) :1394-1396

[6] SCANNING TUNNELING MICROSCOPY OBSERVATIONS ON THE RECONSTRUCTED AU(111) SURFACE - ATOMIC-STRUCTURE, LONG-RANGE SUPERSTRUCTURE, ROTATIONAL DOMAINS, AND SURFACE-DEFECTS [J].

BARTH, JV ;

BRUNE, H ;

ERTL, G ;

BEHM, RJ .

PHYSICAL REVIEW B, 1990, 42 (15) :9307-9318

[7] Magnetic relaxation and dipole-coupling-induced magnetization in nanostructured thin films during growth: A cluster Monte Carlo study [J].

Brinzanik, R ;

Jensen, PJ ;

Bennemann, KH .

PHYSICAL REVIEW B, 2003, 68 (17)

[8] Self-organized growth of nanostructure arrays on strain-relief patterns [J].

Brune, H ;

Giovannini, M ;

Bromann, K ;

Kern, K .

NATURE, 1998, 394 (6692) :451-453

[9] KINETIC PROCESSES IN METAL EPITAXY STUDIED WITH VARIABLE-TEMPERATURE STM - AG/PT(111) [J].

BRUNE, H ;

RODER, H ;

BROMANN, K ;

KERN, K .

THIN SOLID FILMS, 1995, 264 (02) :230-235

[10] TIGHT-BINDING APPROACH TO THE ORBITAL MAGNETIC-MOMENT AND MAGNETOCRYSTALLINE ANISOTROPY OF TRANSITION-METAL MONOLAYERS [J].

BRUNO, P .

PHYSICAL REVIEW B, 1989, 39 (01) :865-868

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