Stoichiometry control and electronic and transport properties of pyrochlore Bi2Ir2O7 thin films

Yang, W. C.; Xie, Y. T.; Sun, X.; Zhang, X. H.; Park, K.; Xue, S. C.; Li, Y. L.; Tao, C. G.; Jia, Q. X.; Losovyj, Y.; Wang, H.; Heremans, J. J.; Zhang, S. X.

doi:10.1103/physrevmaterials.2.114206

Title: Stoichiometry control and electronic and transport properties of pyrochlore $B i_{2} I r_{2} O_{7}$ thin films

Journal Article · Wed Nov 21 00:00:00 EST 2018 · Physical Review Materials

DOI:https://doi.org/10.1103/physrevmaterials.2.114206· OSTI ID:1610008

Yang, W. C. ^[1]; Xie, Y. T. ^[2]; Sun, X. ^[3]; Zhang, X. H. ^[4]; Park, K. ^[5]; Xue, S. C. ^[3]; Li, Y. L. ^[5]; Tao, C. G. ^[5]; Jia, Q. X. ^[6]; Losovyj, Y. ^[1]; Wang, H. ^[3]; Heremans, J. J. ^[5]; Zhang, S. X. ^[1]

Indiana Univ., Bloomington, IN (United States)
Shenzhen Univ. (China)
Purdue Univ., West Lafayette, IN (United States)
Univ. of Maryland, College Park, MD (United States)
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Univ. at Buffalo - The State Univ. of New York, Buffalo, NY (United States); Konkuk Univ., Seoul (Korea)

Synthesizing stoichiometric and epitaxial thin films of pyrochlore iridates is an essential step toward the experimental realization of unusual topological and magnetic states that are theoretically predicted in this unique spin-orbit coupled material system. Here, we report on the stoichiometry control and electronic and transport properties of pyrochlore iridate Bi₂Ir₂O₇ thin films grown by pulsed laser deposition. The as-grown films form a bilayerlike structure, in which the top surface is highly Ir deficient while the bottom layer is mainly composed of iridium metal. By postannealing the as-deposited films in Ir O₂ + O₂ atmosphere, we improved the stoichiometry and homogeneity through the film thickness with the lattice constant close to the bulk value. Density functional theory calculation in the bulk limit shows a fourfold degenerate Dirac node slightly below the Fermi energy at the X point, along with trivial bands around the Γ point. The projected partial density of states suggests that the states in the vicinity of the Fermi energy (–3 to 0 eV) mainly consist of highly hybridized Ir 5d and O 2p with minor contributions from Bi 6s and 6p,while those far below the Fermi energy (–9 to –3 eV) are contributed primarily by the O bands. Transport measurements revealed a weakly metallic behavior at higher temperatures transitioning to a weakly insulating behavior below 150 K, and a low-temperature magnetoresistance qualitatively ascribed to multicarrier and band-structural effects. Here, the transport features are influenced by a density of states sharply peaked at the Fermi energy, and by the coexistence of trivial bands with the Dirac node, as revealed by the density functional theory calculations.

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Research Organization:: Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF)

Grant/Contract Number:: FG02-08ER46532; CHE1048613

OSTI ID:: 1610008

Alternate ID(s):: OSTI ID: 1483029

Journal Information:: Physical Review Materials, Vol. 2, Issue 11; ISSN 2475-9953

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 7 works

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References (62)

Generalized Gradient Approximation Made Simple Perdew, John P.; Burke, Kieron; Ernzerhof, Matthias Physical Review Letters, Vol. 77, Issue 18, p. 3865-3868 https://doi.org/10.1103/PhysRevLett.77.3865	journal	October 1996
Review of the Bi and Bi-O vapor systems Marschman, Steven C.; Lynch, D. C. The Canadian Journal of Chemical Engineering, Vol. 62, Issue 6 https://doi.org/10.1002/cjce.5450620620	journal	December 1984
Anisotropy of Surface Electronic Mobility in Germanium Gorkun, Yu. I.; Lysenko, V. S.; Litovchenko, V. G. Physica Status Solidi (a), Vol. 3, Issue 4 https://doi.org/10.1002/pssa.19700030438	journal	December 1970
Projector augmented-wave method Blöchl, P. E. Physical Review B, Vol. 50, Issue 24, p. 17953-17979 https://doi.org/10.1103/PhysRevB.50.17953	journal	December 1994
Epitaxial strain effect on the $J$ _eff = 1/2 moment orientation in Sr $_{2}$ IrO $_{4}$ thin films Miao, Ludi; Xu, Hong; Mao, Z. Q. Physical Review B, Vol. 89, Issue 3 https://doi.org/10.1103/PhysRevB.89.035109	journal	January 2014
Correlation effects in pyrochlore iridate thin films grown along the [111] direction Chen, Qi; Hung, Hsiang-Hsuan; Hu, Xiang Physical Review B, Vol. 92, Issue 8 https://doi.org/10.1103/PhysRevB.92.085145	journal	August 2015
Correlated Quantum Phenomena in the Strong Spin-Orbit Regime Witczak-Krempa, William; Chen, Gang; Kim, Yong Baek Annual Review of Condensed Matter Physics, Vol. 5, Issue 1 https://doi.org/10.1146/annurev-conmatphys-020911-125138	journal	March 2014
First Principles Prediction of Topological Phases in Thin Films of Pyrochlore Iridates Hu, Xiang; Zhong, Zhicheng; Fiete, Gregory A. Scientific Reports, Vol. 5, Issue 1 https://doi.org/10.1038/srep11072	journal	June 2015
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides Shannon, R. D. Acta Crystallographica Section A, Vol. 32, Issue 5, p. 751-767 https://doi.org/10.1107/S0567739476001551	journal	September 1976
Mott physics and band topology in materials with strong spin–orbit interaction Pesin, Dmytro; Balents, Leon Nature Physics, Vol. 6, Issue 5 https://doi.org/10.1038/nphys1606	journal	March 2010
Anisotropy in the hole mobility measured along the [110] and [1¯10] orientations in a strained Ge quantum well Hassan, A. H. A.; Morris, R. J. H.; Mironov, O. A. Applied Physics Letters, Vol. 104, Issue 13 https://doi.org/10.1063/1.4870392	journal	March 2014
Odd-parity magnetoresistance in pyrochlore iridate thin films with broken time-reversal symmetry Fujita, T. C.; Kozuka, Y.; Uchida, M. Scientific Reports, Vol. 5, Issue 1 https://doi.org/10.1038/srep09711	journal	May 2015
Competing exotic topological insulator phases in transition-metal oxides on the pyrochlore lattice with distortion Kargarian, Mehdi; Wen, Jun; Fiete, Gregory A. Physical Review B, Vol. 83, Issue 16 https://doi.org/10.1103/PhysRevB.83.165112	journal	April 2011
Similarities and Differences in the Structural and Electronic Properties of Ruthenium and Iridium PyrochloresA2M2O7−y(M=Ru, Ir) Koo, H. -J.; Whangbo, M. -H.; Kennedy, B. J. Journal of Solid State Chemistry, Vol. 136, Issue 2 https://doi.org/10.1006/jssc.1997.7705	journal	March 1998
Electromagnetic Signatures of the Chiral Anomaly in Weyl Semimetals Barnes, Edwin; Heremans, J. J.; Minic, Djordje Physical Review Letters, Vol. 117, Issue 21 https://doi.org/10.1103/PhysRevLett.117.217204	journal	November 2016
Tunable semimetallic state in compressive-strained $SrIr O_{3}$ films revealed by transport behavior Zhang, Lunyong; Liang, Qifeng; Xiong, Ye Physical Review B, Vol. 91, Issue 3 https://doi.org/10.1103/PhysRevB.91.035110	journal	January 2015
Slater to Mott Crossover in the Metal to Insulator Transition of ${Nd}_{2} {Ir}_{2} O_{7}$ Nakayama, M.; Kondo, Takeshi; Tian, Z. Physical Review Letters, Vol. 117, Issue 5 https://doi.org/10.1103/PhysRevLett.117.056403	journal	July 2016
p-Type transition-metal doping of large-area MoS ₂ thin films grown by chemical vapor deposition Xu, E. Z.; Liu, H. M.; Park, K. Nanoscale, Vol. 9, Issue 10 https://doi.org/10.1039/C6NR09495C	journal	January 2017
Dirac Semimetal in Three Dimensions Young, S. M.; Zaheer, S.; Teo, J. C. Y. Physical Review Letters, Vol. 108, Issue 14 https://doi.org/10.1103/PhysRevLett.108.140405	journal	April 2012
Experimental electronic structure of the metallic pyrochlore iridate Bi ₂ Ir ₂ O ₇ Wang, Q.; Cao, Y.; Wan, X. G. Journal of Physics: Condensed Matter, Vol. 27, Issue 1 https://doi.org/10.1088/0953-8984/27/1/015502	journal	December 2014
Tuning Magnetic Coupling in ${Sr}_{2} {IrO}_{4}$ Thin Films with Epitaxial Strain Lupascu, A.; Clancy, J. P.; Gretarsson, H. Physical Review Letters, Vol. 112, Issue 14 https://doi.org/10.1103/PhysRevLett.112.147201	journal	April 2014
Mobility anisotropy of two‐dimensional hole systems in (311)A GaAs/Al _x Ga _{1− x} As heterojunctions Heremans, J. J.; Santos, M. B.; Hirakawa, K. Journal of Applied Physics, Vol. 76, Issue 3 https://doi.org/10.1063/1.358419	journal	August 1994
Disordered electronic systems Lee, Patrick A.; Ramakrishnan, T. V. Reviews of Modern Physics, Vol. 57, Issue 2 https://doi.org/10.1103/RevModPhys.57.287	journal	April 1985
Optical evidence for a Weyl semimetal state in pyrochlore ${Eu}_{2} {Ir}_{2} O_{7}$ Sushkov, A. B.; Hofmann, J. B.; Jenkins, G. S. Physical Review B, Vol. 92, Issue 24 https://doi.org/10.1103/PhysRevB.92.241108	journal	December 2015
Non-Fermi-Liquid and Topological States with Strong Spin-Orbit Coupling Moon, Eun-Gook; Xu, Cenke; Kim, Yong Baek Physical Review Letters, Vol. 111, Issue 20 https://doi.org/10.1103/PhysRevLett.111.206401	journal	November 2013
Quadratic Fermi node in a 3D strongly correlated semimetal Kondo, Takeshi; Nakayama, M.; Chen, R. Nature Communications, Vol. 6, Issue 1 https://doi.org/10.1038/ncomms10042	journal	December 2015
Electronic transport anisotropy of 2D carriers in biaxial compressive strained germanium Morrison, C.; Myronov, M. Applied Physics Letters, Vol. 111, Issue 19 https://doi.org/10.1063/1.5010933	journal	November 2017
Infrared study of the electronic structure of the metallic pyrochlore iridate Bi $_{2}$ Ir $_{2}$ O $_{7}$ Lee, Y. S.; Moon, S. J.; Riggs, Scott C. Physical Review B, Vol. 87, Issue 19 https://doi.org/10.1103/PhysRevB.87.195143	journal	May 2013
Electron transport properties in high-purity Ge down to cryogenic temperatures Aubry-Fortuna, V.; Dollfus, P. Journal of Applied Physics, Vol. 108, Issue 12 https://doi.org/10.1063/1.3520656	journal	December 2010
Substrate-tuning of correlated spin-orbit oxides revealed by optical conductivity calculations Kim, Bongjae; Kim, Beom Hyun; Kim, Kyoo Scientific Reports, Vol. 6, Issue 1 https://doi.org/10.1038/srep27095	journal	June 2016
Emergent Topological Phenomena in Thin Films of Pyrochlore Iridates Yang, Bohm-Jung; Nagaosa, Naoto Physical Review Letters, Vol. 112, Issue 24 https://doi.org/10.1103/PhysRevLett.112.246402	journal	June 2014
Theory of Multifarious Quantum Phases and Large Anomalous Hall Effect in Pyrochlore Iridate Thin Films Hwang, Kyusung; Kim, Yong Baek Scientific Reports, Vol. 6, Issue 1 https://doi.org/10.1038/srep30017	journal	July 2016
Quantum Hall effects in a Weyl semimetal: Possible application in pyrochlore iridates Yang, Kai-Yu; Lu, Yuan-Ming; Ran, Ying Physical Review B, Vol. 84, Issue 7 https://doi.org/10.1103/PhysRevB.84.075129	journal	August 2011
Epitaxial growth of iridate pyrochlore Nd2Ir2O7 films Gallagher, J. C.; Esser, B. D.; Morrow, R. Scientific Reports, Vol. 6, Issue 1 https://doi.org/10.1038/srep22282	journal	February 2016
The system iridium - oxygen I. Measurements on the volatile oxide of iridium Cordfunke, E. H. P.; Meyer, G. Recueil des Travaux Chimiques des Pays-Bas, Vol. 81, Issue 6 https://doi.org/10.1002/recl.19620810608	journal	January 1962
Epitaxial thin films of pyrochlore iridate Bi2+xIr2-yO7-δ: structure, defects and transport properties Yang, W. C.; Xie, Y. T.; Zhu, W. K. Scientific Reports, Vol. 7, Issue 1 https://doi.org/10.1038/s41598-017-06785-w	journal	August 2017
Spin-Orbit Physics Giving Rise to Novel Phases in Correlated Systems: Iridates and Related Materials Rau, Jeffrey G.; Lee, Eric Kin-Ho; Kee, Hae-Young Annual Review of Condensed Matter Physics, Vol. 7, Issue 1 https://doi.org/10.1146/annurev-conmatphys-031115-011319	journal	March 2016
Anisotropic electronic properties of a -axis-oriented Sr ₂ IrO ₄ epitaxial thin-films Nichols, J.; Korneta, O. B.; Terzic, J. Applied Physics Letters, Vol. 103, Issue 13 https://doi.org/10.1063/1.4822334	journal	September 2013
Tuning electronic structure via epitaxial strain in Sr ₂ IrO ₄ thin films Nichols, J.; Terzic, J.; Bittle, E. G. Applied Physics Letters, Vol. 102, Issue 14 https://doi.org/10.1063/1.4801877	journal	April 2013
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set Kresse, G.; Furthmüller, J. Computational Materials Science, Vol. 6, Issue 1, p. 15-50 https://doi.org/10.1016/0927-0256(96)00008-0	journal	July 1996
Topological and magnetic phases of interacting electrons in the pyrochlore iridates Witczak-Krempa, William; Kim, Yong Baek Physical Review B, Vol. 85, Issue 4 https://doi.org/10.1103/PhysRevB.85.045124	journal	January 2012
Variation of Charge Dynamics in the Course of Metal-Insulator Transition for Pyrochlore-Type ${Nd}_{2} {Ir}_{2} O_{7}$ Ueda, K.; Fujioka, J.; Takahashi, Y. Physical Review Letters, Vol. 109, Issue 13 https://doi.org/10.1103/PhysRevLett.109.136402	journal	September 2012
An MOS-oriented investigation of effective mobility theory Pierret, R. F.; Sah, C. T. Solid-State Electronics, Vol. 11, Issue 3 https://doi.org/10.1016/0038-1101(68)90040-3	journal	March 1968
Topological phases in layered pyrochlore oxide thin films along the [111] direction Hu, Xiang; Rüegg, Andreas; Fiete, Gregory A. Physical Review B, Vol. 86, Issue 23 https://doi.org/10.1103/PhysRevB.86.235141	journal	December 2012
Time-reversal symmetry breaking and spontaneous Hall effect without magnetic dipole order Machida, Yo; Nakatsuji, Satoru; Onoda, Shigeki Nature, Vol. 463, Issue 7278 https://doi.org/10.1038/nature08680	journal	December 2009
Visualizing ferroic domains in an all-in–all-out antiferromagnet thin film Kozuka, Y.; Fujita, T. C.; Uchida, M. Physical Review B, Vol. 96, Issue 22 https://doi.org/10.1103/PhysRevB.96.224417	journal	December 2017
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set Kresse, G.; Furthmüller, J. Physical Review B, Vol. 54, Issue 16, p. 11169-11186 https://doi.org/10.1103/PhysRevB.54.11169	journal	October 1996
Localization and electron-interaction effects in a two-dimensional metal with strong spin-orbit scattering: Pd films Markiewicz, R. S.; Rollins, C. J. Physical Review B, Vol. 29, Issue 2 https://doi.org/10.1103/PhysRevB.29.735	journal	January 1984
Channel direction, effective field, and temperature dependencies of hole mobility in (110)-oriented Ge-on-insulator p-channel metal-oxide-semiconductor field-effect transistors fabricated by Ge condensation technique Dissanayake, Sanjeewa; Zhao, Yi; Sugahara, S. Journal of Applied Physics, Vol. 109, Issue 3 https://doi.org/10.1063/1.3537919	journal	February 2011
Giant reversible nanoscale piezoresistance at room temperature in Sr ₂ IrO ₄ thin films Domingo, Neus; López-Mir, Laura; Paradinas, Markos Nanoscale, Vol. 7, Issue 8 https://doi.org/10.1039/C4NR06954D	journal	January 2015
Zero bias anomaly in tunnel resistance and electron-electron interaction Altshuler, B. L.; Aronov, A. G. Solid State Communications, Vol. 30, Issue 3 https://doi.org/10.1016/0038-1098(79)90967-0	journal	April 1979
Magnetotransport and induced superconductivity in Bi based three-dimensional topological insulators Veldhorst, M.; Snelder, M.; Hoek, M. physica status solidi (RRL) - Rapid Research Letters, Vol. 7, Issue 1-2 https://doi.org/10.1002/pssr.201206408	journal	December 2012
Recent progress on correlated electron systems with strong spin–orbit coupling Schaffer, Robert; Kin-Ho Lee, Eric; Yang, Bohm-Jung Reports on Progress in Physics, Vol. 79, Issue 9 https://doi.org/10.1088/0034-4885/79/9/094504	journal	August 2016
Surface oxidation and thermoelectric properties of indium-doped tin telluride nanowires Li, Zhen; Xu, Enzhi; Losovyj, Yaroslav Nanoscale, Vol. 9, Issue 35 https://doi.org/10.1039/C7NR04934J	journal	January 2017
All-in-all-out magnetic domain inversion in ${Tb}_{2} {Ir}_{2} O_{7}$ with molecular fields antiparallel to external fields Fujita, T. C.; Kozuka, Y.; Matsuno, J. Physical Review Materials, Vol. 2, Issue 1 https://doi.org/10.1103/PhysRevMaterials.2.011402	journal	January 2018
Weak magnetic transitions in pyrochlore Bi $_{2}$ Ir $_{2}$ O $_{7}$ Baker, P. J.; Möller, J. S.; Pratt, F. L. Physical Review B, Vol. 87, Issue 18 https://doi.org/10.1103/PhysRevB.87.180409	journal	May 2013
The challenge of spin–orbit-tuned ground states in iridates: a key issues review Cao, Gang; Schlottmann, Pedro Reports on Progress in Physics, Vol. 81, Issue 4 https://doi.org/10.1088/1361-6633/aaa979	journal	February 2018
Synthesis and electronic properties of Ruddlesden-Popper strontium iridate epitaxial thin films stabilized by control of growth kinetics Liu, Xiaoran; Cao, Yanwei; Pal, B. Physical Review Materials, Vol. 1, Issue 7 https://doi.org/10.1103/PhysRevMaterials.1.075004	journal	December 2017
Six-band k⋅p calculation of the hole mobility in silicon inversion layers: Dependence on surface orientation, strain, and silicon thickness Fischetti, M. V.; Ren, Z.; Solomon, P. M. Journal of Applied Physics, Vol. 94, Issue 2 https://doi.org/10.1063/1.1585120	journal	July 2003
Strong magnetic instability in correlated metallic Bi ₂ Ir ₂ O ₇ Qi, T. F.; Korneta, O. B.; Wan, Xiangang Journal of Physics: Condensed Matter, Vol. 24, Issue 34 https://doi.org/10.1088/0953-8984/24/34/345601	journal	July 2012
Topological semimetal and Fermi-arc surface states in the electronic structure of pyrochlore iridates Wan, Xiangang; Turner, Ari M.; Vishwanath, Ashvin Physical Review B, Vol. 83, Issue 20 https://doi.org/10.1103/PhysRevB.83.205101	journal	May 2011
All-in-all-out magnetic domain wall conduction in a pyrochlore iridate heterointerface Fujita, T. C.; Uchida, M.; Kozuka, Y. Physical Review B, Vol. 93, Issue 6 https://doi.org/10.1103/PhysRevB.93.064419	journal	February 2016

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Title: Stoichiometry control and electronic and transport properties of pyrochlore B i 2 I r 2 O 7 thin films

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Title: Stoichiometry control and electronic and transport properties of pyrochlore $B i_{2} I r_{2} O_{7}$ thin films