(111)-oriented pyrochlore Pr2Ir2O7 epitaxial thin films were successfully fabricated on yttria-stabilized zirconia (111) substrates by means of solid phase epitaxy, namely, the combination of pulsed laser deposition (PLD) of an amorphous precursor film at room temperature, followed by epitaxial crystallization in an ex situ post-annealing process in air. The Pr2Ir2O7 phase cannot be obtained in a conventional in situ PLD process because of severe Ir loss. The Pr2Ir2O7 thin films showed metallic electronic conductivity and the spontaneous Hall effect. These transport properties are similar to the ones reported for bulk single crystal samples, indicating that the thin films had high crystalline quality.

1.
W.
Witczak-Krempa
,
G.
Chen
,
Y. B.
Kim
, and
L.
Balents
, “
Correlated quantum phenomena in the strong spin-orbit regime
,”
Annu. Rev. Condens. Matter Phys.
5
,
57
(
2013
).
2.
S.
Nakatsuji
,
Y.
Machida
,
Y.
Maeno
,
T.
Tayama
,
T.
Sakakibara
,
J.
van Duijn
,
L.
Balicas
,
J. N.
Millican
,
R. T.
Macaluso
, and
J. Y.
Chan
, “
Metallic spin-liquid behavior of the geometrically frustrated Kondo lattice Pr2Ir2O7
,”
Phys. Rev. Lett.
96
,
087204
(
2006
).
3.
Y.
Tokiwa
,
J. J.
Ishikawa
,
S.
Nakatsuji
, and
P.
Gegenwart
, “
Quantum criticality in a metallic spin liquid
,”
Nat. Mater.
13
,
356
359
(
2014
).
4.
Y.
Machida
,
S.
Nakatsuji
,
S.
Onoda
,
T.
Tayama
, and
T.
Sakakibara
, “
Time-reversal symmetry breaking and spontaneous Hall effect without magnetic dipole order
,”
Nature
463
,
210
213
(
2010
).
5.
E.-G.
Moon
,
C.
Xu
,
Y. B.
Kim
, and
L.
Balents
, “
Non-Fermi-liquid and topological states with strong spin-orbit coupling
,”
Phys. Rev. Lett.
111
,
206401
(
2013
).
6.
T.
Kondo
,
M.
Nakayama
,
R.
Chen
,
J. J.
Ishikawa
,
E.-G.
Moon
,
T.
Yamamoto
,
Y.
Ota
,
W.
Malaeb
,
H.
Kanai
,
Y.
Nakashima
,
Y.
Ishida
,
R.
Yoshida
,
H.
Yamamoto
,
M.
Matsunami
,
S.
Kimura
,
N.
Inami
,
K.
Ono
,
H.
Kumigashira
,
S.
Nakatsuji
,
L.
Balents
, and
S.
Shin
, “
Quadratic Fermi node in a 3D strongly correlated semimetal
,”
Nat. Commun.
6
,
10042
(
2015
).
7.
T.
Yoshimura
and
S.
Trolier-McKinstry
, “
Growth and properties of (001) BiScO3-PbTiO3 epitaxial films
,”
Appl. Phys. Lett.
81
,
2065
2066
(
2002
).
8.
W.
Eerenstein
,
F. D.
Morrison
,
J. F.
Scott
, and
N. D.
Mathur
, “
Growth of highly resistive BiMnO3 films
,”
Appl. Phys. Lett.
87
,
101906
(
2005
).
9.
S.
Fujino
,
M.
Murakami
,
S.-H.
Lim
,
L. G.
Salamanca-Riba
,
M.
Wuttig
, and
I.
Takeuchi
, “
Multiphase growth in Bi-Mn-O thin films
,”
J. Appl. Phys.
101
,
013903
(
2007
).
10.
E. H. P.
Cordfunke
and
G.
Meyer
, “
The system iridium–oxygen. I. Measurements on the volatile oxide of iridium
,”
Recl. Trav. Chim. Pays Bas
81
,
495
(
1962
).
11.
X.
Hou
,
R.
Takahashi
,
T.
Yamamoto
, and
M.
Lippmaa
, “
Microstructure analysis of IrO2 thin films
,”
J. Cryst. Growth
462
,
24
(
2017
).
12.
K.
Kimura
,
Y.
Ohta
, and
S.
Nakatsuji
, “
Structural, magnetic, and electrical properties in the metallic pyrochlore Pr2+xIr2xO7+δ
,”
J. Phys.: Conf. Ser.
400
,
032040
(
2012
).
13.
T.
Ohtsuki
,
Z.
Tian
,
A.
Endo
,
M.
Halim
,
S.
Katsumoto
,
Y.
Kohama
,
K.
Kindo
,
M.
Lippmaa
, and
S.
Nakatsuji
, “
Strain-induced spontaneous Hall effect in an epitaxial thin film of a Luttinger semimetal
,”
Proc. Natl. Acad. Sci. U.S.A.
116
,
8803
(
2019
).
14.
T.
Honke
,
H.
Fujioka
,
J.
Ohta
, and
M.
Oshima
, “
InN epitaxial growths on Yttria stabilized zirconia (111) step substrates
,”
J. Vac. Sci. Technol. A
22
,
2487
2489
(
2004
).
15.
N.
Hirosaki
,
S.
Ogata
, and
C.
Kocer
, “
Ab initio calculation of the crystal structure of the lanthanide Ln2O3 sesquioxides
,”
J. Alloys Compd.
351
,
31
34
(
2003
).
16.
H. J.
Osten
,
J. P.
Liu
,
P.
Gaworzewski
,
E.
Bugiel
, and
P.
Zaumseil
, “
High-k gate dielectrics with ultra-low leakage current based on praseodymium oxide
,” in
International Electron Devices Meeting 2000 Technical Digest
, 10–13 Dec. 2000, San Francisco, CA (IEEE, 2000), p. 653.
17.
T. C.
Fujita
,
Y.
Kozuka
,
M.
Uchida
,
A.
Tsukazaki
,
T.
Arima
, and
M.
Kawasaki
, “
Odd-parity magnetoresistance in pyrochlore iridate thin films with broken time-reversal symmetry
,”
Sci. Rep.
5
,
9711
(
2015
).
18.
A.
Callegari
,
D. K.
Sadana
,
D. A.
Buchanan
,
A.
Paccagnella
,
E. D.
Marshall
,
M. A.
Tischler
, and
M.
Norcott
, “
Properties of SiO2/Si/GaAs structures formed by solid state phase epitaxy of amorphous Si on GaAs
,”
Appl. Phys. Lett.
58
,
2540
2542
(
1991
).
19.
E. D.
Marshall
,
B.
Zhang
,
L. C.
Wang
,
P. F.
Jiao
,
W. X.
Chen
,
T.
Sawada
,
S. S.
Lau
,
K. L.
Kavanagh
, and
T. F.
Kuech
, “
Nonalloyed ohmic contacts to n-GaAs by solid-phase epitaxy of Ge
,”
J. Appl. Phys.
62
,
942
947
(
1987
).
20.
T.
Wagner
,
G.
Richter
, and
M.
Rühle
, “
Epitaxy of Pd thin films on (100) SrTiO3: A three-step growth process
,”
J. Appl. Phys.
89
,
2606
2612
(
2001
).
21.
A.
Wawro
,
S.
Suto
, and
A.
Kasuya
, “
STM studies of PtSi formation on Si(111) by solid state epitaxy
,”
Phys. Rev. B
72
,
205302
(
2005
).
22.
K.
Nomura
,
H.
Ohta
,
K.
Ueda
,
T.
Kamiya
,
M.
Hirano
, and
H.
Hosono
, “
Thin-film transistor fabricated in single-crystalline transparent oxide semiconductor
,”
Science
300
,
1269
1272
(
2003
).
23.
J.
Cagnon
,
D. S.
Boesch
,
N. H.
Finstrom
,
S. Z.
Nergiz
,
S. P.
Keane
, and
S.
Stemmer
, “
Microstructure and dielectric properties of pyrochlore Bi2Ti2O7 thin films
,”
J. Appl. Phys.
102
,
044102
(
2007
).
24.
Y.
Krockenberger
,
H.
Matsui
,
T.
Hasegawa
,
M.
Kawasaki
, and
Y.
Tokura
, “
Solid state epitaxy of ferrimagnetic Y3Fe5O12 garnet thin films
,”
Appl. Phys. Lett.
93
,
092505
(
2008
).
25.
S.
Kern
,
C.-K.
Loong
,
J.
Faber, Jr.
, and
G. H.
Lander
, “
Neutron scattering investigation of the magnetic ground state of PrO2
,”
Solid State Commun.
49
,
295
298
(
1984
).
26.
H.
Nishimine
,
M.
Wakeshima
, and
Y.
Hinatsu
, “
Crystal structures, magnetic and thermal properties of Ln3IrO7 (Ln = Pr, Nd, Sm, and Eu)
,”
J. Solid State Chem.
177
,
739
744
(
2004
).
27.
Y.
Liu
,
H.
Masumoto
, and
T.
Goto
, “
Electric and optical properties of IrO2 thin films prepared by laser-ablation
,”
Mater. Trans.
45
,
3023
3027
(
2004
).
28.
M.
Diviš
and
J.
Rusz
, “
Calculation of crystal field for PrO2
,”
J. Magn. Magn. Mater.
290–291
,
1015
1017
(
2005
).
29.
F. F.
Tafti
,
J. J.
Ishikawa
,
A.
McCollam
,
S.
Nakatsuji
, and
S. R.
Julian
, “
Pressure-tuned insulator to metal transition in Eu2Ir2O7
,”
Phys. Rev. B
85
,
205104
(
2012
).
30.
Z.
Tian
,
Y.
Kohama
,
T.
Tomita
,
H.
Ishizuka
,
T. H.
Hsieh
,
J. J.
Ishikawa
,
K.
Kindo
,
L.
Balents
, and
S.
Nakatsuji
, “
Field-induced quantum metal-insulator transition in the pyrochlore iridate Nd2Ir2O7
,”
Nat. Phys.
12
,
134
138
(
2016
).
31.
M.
Udagawa
,
H.
Ishizuka
, and
Y.
Motome
, “
Non-Kondo mechanism for resistivity minimum in spin ice conduction systems
,”
Phys. Rev. Lett.
108
,
066406
(
2012
).
32.
B.
Cheng
,
T.
Ohtsuki
,
D.
Chaudhuri
,
S.
Nakatsuji
,
M.
Lippmaa
, and
N. P.
Armitage
, “
Dielectric anomalies and interactions in the three-dimensional quadratic band touching Luttinger semimetal Pr2Ir2O7
,”
Nat. Commun.
8
,
2097
(
2017
).
33.
T.
Ohtsuki
,
Z.
Tian
,
A.
Endo
,
M.
Halim
,
S.
Katsumoto
,
Y.
Kohama
,
K.
Kindo
,
M.
Lippmaa
, and
S.
Nakatsuji
, “Extracting the chiral contribution to the negative longitudinal magnetoresistance in epitaxial Pr2Ir2O7 thin films,” in JPS Conference Proceedings (to be published).
34.
J. Y. W.
Seto
, “
The electrical properties of polycrystalline silicon films
,”
J. Appl. Phys.
46
,
5247
(
1975
).
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