We have studied the thickness dependence of the magnetic and transport properties of thin EuO films in the range of 10–60 Å. The ferromagnetic phase transition shows a systematic dependence of the critical temperature Tc with decreasing EuO film thickness. This behavior has been attributed to the interface layers which play a major role by reducing the number of average magnetic neighbors; we find the effect of interface intermixing becoming relevant in low thickness regime. In addition, we could identify a clear dependence of the onset of the metal-to-insulator transition on the ferromagnetic ordering of thin EuO films.

1.
J. S.
Moodera
,
T. S.
Santos
, and
T.
Nagahama
,
J. Phys.: Condens. Matter
19
,
165202
(
2007
).
2.
P. G.
Steeneken
,
L. H.
Tjeng
,
I.
Elfimov
,
G. A.
Sawatzky
,
G.
Ghiringhelli
,
N. B.
Brookes
, and
D. -J.
Huang
,
Phys. Rev. Lett.
88
,
047201
(
2002
).
3.
A.
Schmehl
,
V.
Vaithyanathan
,
A.
Herrnberger
,
S.
Thiel
,
C.
Richter
,
M.
Liberati
,
T.
Heeg
,
M.
Röckerath
,
L.
Fitting Kourkoutis
,
S.
Mühlbauer
,
P.
Böni
,
D. A.
Muller
,
Y.
Barash
,
J.
Schubert
,
Y.
Idzerda
,
J.
Mannhart
, and
D. G.
Schlom
,
Nature Mater.
6
,
882
(
2007
).
4.
P.
Wachter
, in
Handbook of the Physics and Chemistry of Rare Earths
, edited by
K.
Schneider
and
L.
Eyring
(
North-Holland
,
New York
,
1979
), Vol.
2
, p.
507
.
5.
T. S.
Santos
,
J. S.
Moodera
,
K. V.
Raman
,
E.
Negusse
,
J.
Holroyd
,
J.
Dvorak
,
M.
Liberati
,
Y. U.
Idzerda
, and
E.
Arenholz
,
Phys. Rev. Lett.
101
,
147201
(
2008
).
6.
R.
Schiller
and
W.
Nolting
,
Solid State Commun.
110
,
121
(
1999
).
7.
T. S.
Santos
and
J. S.
Moodera
,
Phys. Rev. B
69
,
241203
(R) (
2004
).
8.
[REMOVED IF= FIELD]The fcc lattice constant of bulk EuO is a=5.14Å; thus the thickness of one monolayer is dML=2.57Å.
9.
E.
Negusse
,
J.
Holroyd
,
M.
Liberati
,
J.
Dvorak
,
Y. U.
Idzerda
,
T. S.
Santos
,
J. S.
Moodera
, and
E.
Arenholz
,
J. Appl. Phys.
99
,
08E507
(
2006
).
10.
P. J.
Jensen
,
H.
Dreyss
, and
K. H.
Bennemann
,
Europhys. Lett.
18
,
463
(
1992
).
11.
A.
Mauger
and
C.
Godart
,
Phys. Rep.
141
,
51
(
1986
).
You do not currently have access to this content.