DataVXAPL MaterialsPaper
journal article·2019-08-01Open access

Strain-engineering of charge transport in the correlated Dirac semimetal of perovskite CaIrO3 thin films

M. Masuko, J. Fujioka, M. Nakamura, M. Kawasaki, Y. Tokura

APL Materials· Volume 7· Issue 8
Publisher pageOpen full text
Source abstract

Abstract

We have investigated the charge transport in thin films of correlated Dirac semimetal of perovskite CaIrO3 by measurements of resistivity and optical spectra. The semimetallic transport of either electron-type or hole-type carrier is observed in the strain-relaxed thin films. By controlling the strain relaxation via thermal annealing, the carrier density decreases in both n-type and p-type samples, while enhancing the carrier mobility up to 160 cm2 V−1 s−1 at an electron density of 2.5 × 1018 cm−3 at 2 K. We propose that the energy of Dirac line node, which locates in proximity to the Fermi level, varies with the lattice distortion or strain-sensitive defect character, causing the sign change in the charge carrier as well as the mobility enhancement.
Source: crossref · Quality: baseline

Research context

Electronic materialsMaterials processing

OpenAlex topics: Advanced Condensed Matter Physics · Topological Materials and Phenomena · Multiferroics and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Applied Physics and Quantum Phase Electronics Center (QPEC), University of Tokyo 1 , Bunkyo-ku, Tokyo 113-8656, Japan

Graduate School of Pure and Applied Sciences, University of Tsukuba 2 , 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan

PRESTO, Japan Science and Technology Agency 3 , Kawaguchi 332-0012, Japan

RIKEN Center for Emergent Matter Science (CEMS) 4 , Wako, Saitama 351-0198, Japan

Tokyo College, University of Tokyo 5 , Bunkyo-ku, Tokyo 113-8656, Japan

Funding

Japan Society for the Promotion of Science · Core Research for Evolutional Science and Technology · Precursory Research for Embryonic Science and Technology

References (34)

Show source-provided references
1. Rev. Mod. Phys. · 2018 · 90 · 01500110.1103/revmodphys.90.015001 ↗
2. Nat. Mater. · 2014 · 14 · 28010.1038/nmat4143 ↗
3. Science · 2015 · 350 · 41310.1126/science.aac6089 ↗
4. Science · 2003 · 302 · 9210.1126/science.1089408 ↗
5. Phys. Rev. Lett. · 2004 · 93 · 01660210.1103/physrevlett.93.016602 ↗
6. Nat. Phys. · 2016 · 12 · 111910.1038/nphys3831 ↗
7. Phys. Rev. B · 2012 · 85 · 11510510.1103/physrevb.85.115105 ↗
8. Phys. Rev. B · 2012 · 86 · 08514910.1103/physrevb.86.085149 ↗
9. Phys. Rev. Lett. · 2013 · 111 · 24640210.1103/physrevlett.111.246402 ↗
10. Phys. Rev. Lett. · 2015 · 114 · 01640110.1103/physrevlett.114.016401 ↗
11. Phys. Rev. B · 2015 · 92 · 081201(R)10.1103/physrevb.92.081201 ↗
12. Nat. Commun. · 2015 · 6 · 659310.1038/ncomms7593 ↗
13. Phys. Rev. B · 2016 · 93 · 15514010.1103/physrevb.93.155140 ↗
14. Nat. Commun. · 2019 · 10 · 36210.1038/s41467-018-08149-y ↗
15. Mater. Trans. · 2005 · 46 · 10010.2320/matertrans.46.100 ↗
16. J. Phys.: Condens. Matter · 2010 · 22 · 48560210.1088/0953-8984/22/48/485602 ↗
17. J. Appl. Phys. · 2014 · 116 · 21370410.1063/1.4903314 ↗
18. Phys. Rev. B · 2018 · 98 · 11511310.1103/physrevb.98.115113 ↗
19. Phys. Rev. B · 2018 · 97 · 081105(R)10.1103/physrevb.97.081105 ↗
20. APL Mater. · 2018 · 6 · 09110110.1063/1.5042836 ↗
21. AIP Adv. · 2017 · 7 · 08530710.1063/1.4986429 ↗
22. Phys. Rev. Lett. · 2017 · 119 · 25640310.1103/physrevlett.119.256403 ↗
23. Phys. Rev. Lett. · 2017 · 119 · 02720410.1103/physrevlett.119.027204 ↗
24. Phys. Rev. B · 2016 · 93 · 08511810.1103/physrevb.93.085118 ↗
25. Sci. Rep. · 2016 · 6 · 3030910.1038/srep30309 ↗
26. J. Appl. Crystallogr. · 2017 · 50 · 38510.1107/s1600576717000541 ↗
27. Appl. Phys. Lett. · 2015 · 107 · 01210410.1063/1.4926723 ↗
28. J. Appl. Phys. · 2015 · 117 · 19530510.1063/1.4921460 ↗
29. J. Appl. Phys. · 2018 · 124 · 12530810.1063/1.5043502 ↗
30. APL Mater. · 2016 · 4 · 03610210.1063/1.4943519 ↗
31. Sci. Rep. · 2017 · 7 · 774010.1038/s41598-017-06785-w ↗
32. Phys. Rev. B · 2017 · 95 · 121102(R)10.1103/physrevb.95.121102 ↗
33. Phys. Rev. Lett. · 2008 · 101 · 07640210.1103/physrevlett.101.076402 ↗
34. Phys. Rev. B · 2015 · 91 · 23510310.1103/physrevb.91.235103 ↗