TY - JOUR
T1 - Rock salt-type HoO epitaxial thin film as a heavy rare-earth monoxide ferromagnetic semiconductor with a Curie temperature above 130 K
AU - Amrillah, Tahta
AU - Oka, Daichi
AU - Shimizu, Hirokazu
AU - Sasaki, Satoshi
AU - Saito, Daichi
AU - Kaminaga, Kenichi
AU - Fukumura, Tomoteru
N1 - Funding Information:
We thank H. Kawasoko (Tohoku University) for technical assistance and discussion. We thank K. Ohmura (Tohoku University) for technical assistance carried out under the collaboration program of Cooperative Research and Development Center for Advanced Materials, Institute of Materials Research, Tohoku University. T.A. was supported by JSPS Postdoctoral Fellowships for Research in Japan. This work was supported in part by JSPS-KAKENHI (Nos. 18H03872, 18K18935, 19K15440, 19F19347, 20H02704, and 21H05008).
Publisher Copyright:
© 2022 Author(s).
PY - 2022/2/21
Y1 - 2022/2/21
N2 - Ho monopnictides (HoPn: Pn = N, P, As, Sb, and Bi) and monochalcogenides (HoCh: Ch = S, Se, and Te) are known to possess a nontrivial magnetic structure, while solid-phase HoO has not been synthesized yet. In this study, a rock salt-type HoO epitaxial thin film was grown by using the pulsed laser deposition method, which had a bandgap of 0.11 eV and tunable electrical conduction via its oxygen nonstoichiometry. Its Curie temperature, above 130 K, was much higher than those of HoPn and HoCh, most likely due to an enhanced direct exchange interaction. Similar to HoPn and HoCh, a HoO thin film showed a metamagnetic behavior below the Curie temperature in spite of its dominant ferromagentic ordering.
AB - Ho monopnictides (HoPn: Pn = N, P, As, Sb, and Bi) and monochalcogenides (HoCh: Ch = S, Se, and Te) are known to possess a nontrivial magnetic structure, while solid-phase HoO has not been synthesized yet. In this study, a rock salt-type HoO epitaxial thin film was grown by using the pulsed laser deposition method, which had a bandgap of 0.11 eV and tunable electrical conduction via its oxygen nonstoichiometry. Its Curie temperature, above 130 K, was much higher than those of HoPn and HoCh, most likely due to an enhanced direct exchange interaction. Similar to HoPn and HoCh, a HoO thin film showed a metamagnetic behavior below the Curie temperature in spite of its dominant ferromagentic ordering.
UR - http://www.scopus.com/inward/record.url?scp=85125485417&partnerID=8YFLogxK
U2 - 10.1063/5.0081040
DO - 10.1063/5.0081040
M3 - Article
AN - SCOPUS:85125485417
SN - 0003-6951
VL - 120
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 8
M1 - 082403
ER -