Magnetic Hysteresis Loop of Single Co Nano-islands

被引：27

作者：

Rodary, Guillemin ^{[1
]}

Wedekind, Sebastian ^{[1
]}

Sander, Dirk ^{[1
]}

Kirschner, Juergen ^{[1
]}

机构：

[1] Max Planck Inst Microstruct Phys, D-06120 Halle, Germany

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2008年 / 47卷 / 12期

关键词：

spin dependent scanning tunneling microscopy; scanning tunneling spectroscopy; nanomagnetism; magnetic tunnel junction; nano-islands;

D O I：

10.1143/JJAP.47.9013

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spin-dependent scanning tunneling spectroscopy has been performed on single Co islands on Cu(111) at 7 K in fields of up to 4 T. The differential Conductance shows a hysteretic behavior as a function of magnetic field. Symmetric hysteresis curves of the differential conductance are obtained which identify an abrupt switching of the Co island magnetization along the sample normal at fields around 1.5 T, and a reversible change of the spin orientation of the Cr-tip apex with increasing magnetic field. Our result allows a clear-cut assignment of the differential conductance curves in terms of parallel and antiparallel states of the spin orientation between tip and sample. [.DOI: 10.1143/JJAP.47.9013]

引用

页码：9013 / 9015

页数：3

共 20 条

[1] Chiral magnetic order at surfaces driven by inversion asymmetry [J].

Bode, M. ;

Heide, M. ;

von Bergmann, K. ;

Ferriani, P. ;

Heinze, S. ;

Bihlmayer, G. ;

Kubetzka, A. ;

Pietzsch, O. ;

Bluegel, S. ;

Wiesendanger, R. .

NATURE, 2007, 447 (7141) :190-193

[2] Magnetization-direction-dependent local electronic structure probed by scanning tunneling spectroscopy -: art. no. 237205 [J].

Bode, M ;

Heinze, S ;

Kubetzka, A ;

Pietzsch, O ;

Nie, X ;

Bihlmayer, G ;

Blügel, S ;

Wiesendanger, R .

PHYSICAL REVIEW LETTERS, 2002, 89 (23) :1-237205

[3] Spin-polarized scanning tunnelling microscopy [J].

Bode, M .

REPORTS ON PROGRESS IN PHYSICS, 2003, 66 (04) :523-582

[4] SCANNING-TUNNELING-MICROSCOPY STUDY OF THE GROWTH OF COBALT ON CU(111) [J].

DELAFIGUERA, J ;

PRIETO, JE ;

OCAL, C ;

MIRANDA, R .

PHYSICAL REVIEW B, 1993, 47 (19) :13043-13046

[5] Surface states of cobalt nanoislands on Cu(111) -: art. no. 236801 [J].

Diekhöner, L ;

Schneider, MA ;

Baranov, AN ;

Stepanyuk, VS ;

Bruno, P ;

Kern, K .

PHYSICAL REVIEW LETTERS, 2003, 90 (23) :4

[6] Mapping the surface spin structure of large unit cells: Reconstructed mn films on Fe(001) [J].

Gao, C. L. ;

Schlickum, U. ;

Wulfhekel, W. ;

Kirschner, J. .

PHYSICAL REVIEW LETTERS, 2007, 98 (10)

[7] Spin-resolved electronic structure of nanoscale cobalt islands on Cu(111) [J].

Pietzsch, O. ;

Okatov, S. ;

Kubetzka, A. ;

Bode, M. ;

Heinze, S. ;

Lichtenstein, A. ;

Wiesendanger, R. .

PHYSICAL REVIEW LETTERS, 2006, 96 (23)

[8] Spin-polarized scanning tunneling spectroscopy of nanoscale cobalt islands on Cu(111) [J].

Pietzsch, O ;

Kubetzka, A ;

Bode, M ;

Wiesendanger, R .

PHYSICAL REVIEW LETTERS, 2004, 92 (05) :4

[9] Observation of magnetic hysteresis at the nanometer scale by spin-polarized scanning tunneling spectroscopy [J].

Pietzsch, O ;

Kubetzka, A ;

Bode, M ;

Wiesendanger, R .

SCIENCE, 2001, 292 (5524) :2053-2056

[10] Spin polarized tunnelling investigation of nanometre Co clusters by means of a Ni bulk tip [J].

Rastei, M. V. ;

Bucher, J. P. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2006, 18 (50) :L619-L624

← 1 2 →