Spin-Dependent Quantum Interference Within a Single Magnetic Nanostructure

被引：90

作者：

Oka, H. ^{[1
]}

Ignatiev, P. A. ^{[1
]}

Wedekind, S. ^{[1
]}

Rodary, G. ^{[1
]}

Niebergall, L. ^{[1
]}

Stepanyuk, V. S. ^{[1
]}

Sander, D. ^{[1
]}

Kirschner, J. ^{[1
]}

机构：

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

来源：

SCIENCE | 2010年 / 327卷 / 5967期

关键词：

SCANNING-TUNNELING-MICROSCOPY; CONFINEMENT; ISLANDS; SURFACE;

D O I：

10.1126/science.1183224

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：

Quantum interference is a coherent quantum phenomenon that takes place in confined geometries. Using spin-polarized scanning tunneling microscopy, we found that quantum interference of electrons causes spatial modulation of spin polarization within a single magnetic nanostructure. We observed changes in both the sign and magnitude of the spin polarization on a subnanometer scale. A comparison of our experimental results with ab initio calculations shows that at a given energy, the modulation of the spin polarization can be ascribed to the difference between the spatially modulated local density of states of the majority spin and the nonmodulated minority spin contribution.

引用

页码：843 / 846

页数：4

共 22 条

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

Bode, M .

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

[2] Quantum confinement on nanoislands as a tool for tailoring exchange interaction: An ab initio study [J].

Brovko, O. O. ;

Hergert, W. ;

Stepanyuk, V. S. .

PHYSICAL REVIEW B, 2009, 79 (20)

[3] CONFINEMENT OF ELECTRONS TO QUANTUM CORRALS ON A METAL-SURFACE [J].

CROMMIE, MF ;

LUTZ, CP ;

EIGLER, DM .

SCIENCE, 1993, 262 (5131) :218-220

[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] POSITIONING SINGLE ATOMS WITH A SCANNING TUNNELING MICROSCOPE [J].

EIGLER, DM ;

SCHWEIZER, EK .

NATURE, 1990, 344 (6266) :524-526

[7] Electron confinement to nanoscale Ag islands on Ag(111): A quantitative study [J].

Li, JT ;

Schneider, WD ;

Berndt, R ;

Crampin, S .

PHYSICAL REVIEW LETTERS, 1998, 80 (15) :3332-3335

[8] Quantum mirages formed by coherent projection of electronic structure [J].

Manoharan, HC ;

Lutz, CP ;

Eigler, DM .

NATURE, 2000, 403 (6769) :512-515

[9] Revealing magnetic interactions from single-atom magnetization curves [J].

Meier, Focko ;

Zhou, Lihui ;

Wiebe, Jens ;

Wiesendanger, Roland .

SCIENCE, 2008, 320 (5872) :82-86

[10] Bilayer growth of nanoscale Co islands on Cu(111) [J].

Negulyaev, N. N. ;

Stepanyuk, V. S. ;

Bruno, P. ;

Diekhoener, L. ;

Wahl, P. ;

Kern, K. .

PHYSICAL REVIEW B, 2008, 77 (12)

← 1 2 3 →