Fe Nanoclusters on the Ge(001) Surface Studied by Scanning Tunneling Microscopy, Density Functional Theory Calculations and X-Ray Magnetic Circular Dichroism

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Standard

Fe Nanoclusters on the Ge(001) Surface Studied by Scanning Tunneling Microscopy, Density Functional Theory Calculations and X-Ray Magnetic Circular Dichroism. / Luebben, Olaf; Krasnikov, Sergey A.; Preobrajenski, Alexei; Murphy, Barry E.; Shvets, Igor V.

I: Nano Reseach, Vol. 4, Nr. 10, 2011, s. 971-978.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Harvard

APA

CBE

MLA

Vancouver

Author

RIS

TY - JOUR

T1 - Fe Nanoclusters on the Ge(001) Surface Studied by Scanning Tunneling Microscopy, Density Functional Theory Calculations and X-Ray Magnetic Circular Dichroism

AU - Luebben, Olaf

AU - Krasnikov, Sergey A.

AU - Preobrajenski, Alexei

AU - Murphy, Barry E.

AU - Shvets, Igor V.

PY - 2011

Y1 - 2011

N2 - The growth of Fe nanoclusters on the Ge(001) surface has been studied using low-temperature scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. STM results indicate that Fe nucleates on the Ge(001) surface, forming well-ordered nanoclusters of uniform size. Depending on the preparation conditions, two types of nanoclusters were observed having either four or sixteen Fe atoms within a nanocluster. The results were confirmed by DFT calculations. Annealing the nanoclusters at 420 K leads to the formation of nanorow structures, due to cluster mobility at such temperature. The Fe nanoclusters and nanorow structures formed on the Ge(001) surface show a superparamagnetic behaviour as measured by X-ray magnetic circular dichroism.

AB - The growth of Fe nanoclusters on the Ge(001) surface has been studied using low-temperature scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. STM results indicate that Fe nucleates on the Ge(001) surface, forming well-ordered nanoclusters of uniform size. Depending on the preparation conditions, two types of nanoclusters were observed having either four or sixteen Fe atoms within a nanocluster. The results were confirmed by DFT calculations. Annealing the nanoclusters at 420 K leads to the formation of nanorow structures, due to cluster mobility at such temperature. The Fe nanoclusters and nanorow structures formed on the Ge(001) surface show a superparamagnetic behaviour as measured by X-ray magnetic circular dichroism.

KW - Ge(001)

KW - iron nanoclusters

KW - self-assembly

KW - scanning tunnelling

KW - microscopy

KW - X-ray magnetic circular dichroism

KW - density functional

KW - theory calculations

U2 - 10.1007/s12274-011-0153-6

DO - 10.1007/s12274-011-0153-6

M3 - Article

VL - 4

SP - 971

EP - 978

JO - Nano Reseach

T2 - Nano Reseach

JF - Nano Reseach

SN - 1998-0124

IS - 10

ER -