Scanning tunneling spectroscopy on deposited platinum clusters

被引:54
作者
Bettac, A [1 ]
Koller, L [1 ]
Rank, V [1 ]
Meiwes-Broer, KH [1 ]
机构
[1] Univ Rostock, Fachbereich Phys, D-18051 Rostock, Germany
关键词
clusters; conductivity; platinum; quantum size effect; scanning tunneling spectroscopy;
D O I
10.1016/S0039-6028(98)00028-4
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report on investigations of platinum clusters with about five to 400 atoms that are deposited from a cluster beam on to crystalline graphite surfaces. Scanning tunneling spectroscopy in an UHV environment at liquid helium temperatures reveals the existence of distinct peaks in the conductivity of the cluster-on-surface system. For negative voltages, the peak separations scale with the inverse particle height, which hints at a quantum size effect in these metallic "quantum dots". (C) 1998 Elsevier Science B.V..All rights reserved.
引用
收藏
页码:475 / 479
页数:5
相关论文
共 12 条
[1]   Electron fringes on a quantum wedge [J].
Altfeder, IB ;
Matveev, KA ;
Chen, DM .
PHYSICAL REVIEW LETTERS, 1997, 78 (14) :2815-2818
[2]   TUNNELING SPECTROSCOPY AND INVERSE PHOTOEMISSION - IMAGE AND FIELD STATES [J].
BINNIG, G ;
FRANK, KH ;
FUCHS, H ;
GARCIA, N ;
REIHL, B ;
ROHRER, H ;
SALVAN, F ;
WILLIAMS, AR .
PHYSICAL REVIEW LETTERS, 1985, 55 (09) :991-994
[3]   OBSERVATION OF QUANTUM SIZE EFFECTS IN PHOTOEMISSION FROM AG ISLANDS ON GAAS(110) [J].
EVANS, DA ;
ALONSO, M ;
CIMINO, R ;
HORN, K .
PHYSICAL REVIEW LETTERS, 1993, 70 (22) :3483-3486
[4]   UNOCCUPIED ELECTRONIC STATES OF A GRAPHITE SURFACE AS OBSERVED BY LOCAL TUNNELING SPECTROSCOPY [J].
FUCHS, H ;
TOSATTI, E .
EUROPHYSICS LETTERS, 1987, 3 (06) :745-749
[5]   Coulomb staircases and quantum size effects in tunnelling spectroscopy on ligand-stabilized metal clusters [J].
Gerritsen, JW ;
Shafranjuk, SE ;
Boon, EJG ;
Schmid, G ;
vanKempen, H .
EUROPHYSICS LETTERS, 1996, 33 (04) :279-284
[6]   Reversible manipulations of room temperature mechanical and quantum transport properties in nanowire junctions [J].
Landman, U ;
Luedtke, WD ;
Salisbury, BE ;
Whetten, RL .
PHYSICAL REVIEW LETTERS, 1996, 77 (07) :1362-1365
[7]   ELECTRONIC-PROPERTIES OF FREE AND SUPPORTED METAL-CLUSTERS STUDIED BY PHOTOELECTRON-SPECTROSCOPY [J].
MEIWESBROER, KH .
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1992, 55 (05) :430-441
[8]   EVOLUTION OF THE ELECTRONIC AND GEOMETRIC STRUCTURE OF SIZE-SELECTED PT AND PD CLUSTERS ON AG(110) OBSERVED BY PHOTOEMISSION [J].
ROY, HV ;
FAYET, P ;
PATTHEY, F ;
SCHNEIDER, WD ;
DELLEY, B ;
MASSOBRIO, C .
PHYSICAL REVIEW B, 1994, 49 (08) :5611-5620
[9]   SINGLE-ELECTRON TUNNELING OBSERVED AT ROOM-TEMPERATURE BY SCANNING-TUNNELING MICROSCOPY [J].
SCHONENBERGER, C ;
VANHOUTEN, H ;
DONKERSLOOT, HC .
EUROPHYSICS LETTERS, 1992, 20 (03) :249-254
[10]   THE PULSED-ARC CLUSTER ION-SOURCE (PACIS) [J].
SIEKMANN, HR ;
LUDER, C ;
FAEHRMANN, J ;
LUTZ, HO ;
MEIWESBROER, KH .
ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1991, 20 (1-4) :417-420