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Title: Optical study on the possible Slater insulator SrIr 0.8 Sn 0.2 O 3

Abstract

The orthorhombic perovskite iridate SrIr0.8Sn0.2O3 is reported to be a new candidate of Slater insulator at low temperatures. Here, we present optical spectroscopy measurements on SrIr0.8Sn0.2O3 at different temperatures (T) across the paramagnetic-antiferromagnetic phase transition. The low energy reflectivity decreases with reducing T. Six phonon peaks in the spectrum at low T are visible at room temperature, indicating the absence of crystal structure phase transition from 300 K to 10 K. The real part of conductivity spectra σ1 (ω) are obtained by employing the standard Kramers-Kronig transformation. In the paramagnetic state at room temperature, σ1 (ω) reaches a limiting value as ω → 0, implying an electrical conducting state. Upon decreasing T, the low frequency σ1 (ω) decreases and approaches zero with a concomitant opening of a direct gap. As a result, detailed analysis of the low energy data shows that the gap opening is continuous and σ1 (ω) at the low energy gap edge follows an unusual ω1/2 dependence at low temperatures which is remarkably similar to other Slater insulators, such as NaOsO3.

Authors:
ORCiD logo [1];  [2];  [1];  [3];  [4];  [5];  [3]
  1. Chinese Academy of Sciences (CAS), Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China)
  3. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China); Songshan Lake Materials Lab., Guangdong (China)
  4. Chinese Academy of Sciences (CAS), Beijing (China); ShanghaiTech Univ. (China)
  5. Boston College, Chestnut Hill, MA (United States)
Publication Date:
Research Org.:
Boston College, Chestnut Hill, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1610429
Alternate Identifier(s):
OSTI ID: 1546429
Grant/Contract Number:  
FG02-99ER45747
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 100; Journal Issue: 4; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; materials science; physics; phase transitions; 3-dimensional systems; Fourier transform infrared spectroscopy

Citation Formats

Zheng, P., Cui, Q., Chen, Z. G., Cheng, J. G., Liu, X., Wang, Z. Q., and Luo, J. L. Optical study on the possible Slater insulator SrIr0.8Sn0.2O3. United States: N. p., 2019. Web. doi:10.1103/physrevb.100.045101.
Zheng, P., Cui, Q., Chen, Z. G., Cheng, J. G., Liu, X., Wang, Z. Q., & Luo, J. L. Optical study on the possible Slater insulator SrIr0.8Sn0.2O3. United States. https://doi.org/10.1103/physrevb.100.045101
Zheng, P., Cui, Q., Chen, Z. G., Cheng, J. G., Liu, X., Wang, Z. Q., and Luo, J. L. Tue . "Optical study on the possible Slater insulator SrIr0.8Sn0.2O3". United States. https://doi.org/10.1103/physrevb.100.045101. https://www.osti.gov/servlets/purl/1610429.
@article{osti_1610429,
title = {Optical study on the possible Slater insulator SrIr0.8Sn0.2O3},
author = {Zheng, P. and Cui, Q. and Chen, Z. G. and Cheng, J. G. and Liu, X. and Wang, Z. Q. and Luo, J. L.},
abstractNote = {The orthorhombic perovskite iridate SrIr0.8Sn0.2O3 is reported to be a new candidate of Slater insulator at low temperatures. Here, we present optical spectroscopy measurements on SrIr0.8Sn0.2O3 at different temperatures (T) across the paramagnetic-antiferromagnetic phase transition. The low energy reflectivity decreases with reducing T. Six phonon peaks in the spectrum at low T are visible at room temperature, indicating the absence of crystal structure phase transition from 300 K to 10 K. The real part of conductivity spectra σ1 (ω) are obtained by employing the standard Kramers-Kronig transformation. In the paramagnetic state at room temperature, σ1 (ω) reaches a limiting value as ω → 0, implying an electrical conducting state. Upon decreasing T, the low frequency σ1 (ω) decreases and approaches zero with a concomitant opening of a direct gap. As a result, detailed analysis of the low energy data shows that the gap opening is continuous and σ1 (ω) at the low energy gap edge follows an unusual ω1/2 dependence at low temperatures which is remarkably similar to other Slater insulators, such as NaOsO3.},
doi = {10.1103/physrevb.100.045101},
journal = {Physical Review B},
number = 4,
volume = 100,
place = {United States},
year = {Tue Jul 02 00:00:00 EDT 2019},
month = {Tue Jul 02 00:00:00 EDT 2019}
}

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Figures / Tables:

FIG. 1 FIG. 1: The top figure is a plot of the frequency dependence of reflectivity R(w) at 300 K, 250 K, 200 K, 140 K, 70 K and 10 K, respectively. The bottom one displays the phnonons in the far-infrared region at different temperatures in an enlarged scaling.

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Works referenced in this record:

Doublon-holon binding, Mott transition, and fractionalized antiferromagnet in the Hubbard model
journal, May 2014


Magnetically Driven Metal-Insulator Transition in NaOsO 3
journal, June 2012


Continuous magnetic phase transition in half-frustrated Ca 2 Os 2 O 7
journal, November 2012


Tetrahedral Magnetic Order and the Metal-Insulator Transition in the Pyrochlore Lattice of Cd 2 Os 2 O 7
journal, June 2012


Searching for the Slater transition in the pyrochlore Cd 2 Os 2 O 7 with infrared spectroscopy
journal, July 2002


Phase-Sensitive Observation of a Spin-Orbital Mott State in Sr2IrO4
journal, March 2009


Absence of a Slater Transition in the Two-Dimensional Hubbard Model
journal, October 2001


Interplay between spin-orbit coupling and Hubbard interaction in SrIrO 3 and related Pbnm perovskite oxides
journal, August 2012


Temperature dependence of the optical response of perovskite-type SrIrO3 thin film
journal, April 2014


Novel J eff = 1 / 2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr 2 IrO 4
journal, August 2008


Slater Insulator in Iridate Perovskites with Strong Spin-Orbit Coupling
journal, October 2016


Syntheses, structures and properties of some osmates(iv,v) adopting the pyrochlore and weberite structures
journal, June 2002

  • Reading, J.; Knee, C. S.; Weller, M. T.
  • Journal of Materials Chemistry, Vol. 12, Issue 8
  • DOI: 10.1039/b201410f

Continuous metal-insulator transition in the pyrochlore Cd 2 Os 2 O 7
journal, April 2001


Semimetal and Topological Insulator in Perovskite Iridates
journal, March 2012


Charge Dynamics and Metal–Insulator Transition in Perovskite SrIr 1− x Sn x O 3
journal, December 2018

  • Fujioka, Jun; Okawa, Tatsuya; Masuko, Makoto
  • Journal of the Physical Society of Japan, Vol. 87, Issue 12
  • DOI: 10.7566/JPSJ.87.123706

Magnetic Effects and the Hartree-Fock Equation
journal, May 1951


Weak ferromagnetism, metal-to-nonmetal transition, and negative differential resistivity in single-crystal Sr 2 IrO 4
journal, May 1998


Optical study on doped polyaniline composite films
journal, August 2004


The Basis of the Electron Theory of Metals, with Special Reference to the Transition Metals
journal, July 1949


Infrared evidence of a Slater metal-insulator transition in NaOsO3
journal, October 2013

  • Vecchio, I. Lo; Perucchi, A.; Di Pietro, P.
  • Scientific Reports, Vol. 3, Issue 1
  • DOI: 10.1038/srep02990

The metal-to-semiconductor transition in ternary ruthenium (IV) oxides: a study by electron spectroscopy
journal, November 1983

  • Cox, P. A.; Egdell, R. G.; Goodenough, J. B.
  • Journal of Physics C: Solid State Physics, Vol. 16, Issue 32
  • DOI: 10.1088/0022-3719/16/32/014

Temperature evolution of magnetic and transport behavior in 5 d Mott insulator Sr 2 IrO 4 : significance of magneto-structural coupling
journal, December 2014


Observation of the Gap and Kinetic Energy in a Correlated Insulator
journal, September 1994


Absence of a Slater Transition in the Two-Dimensional Hubbard Model
text, January 2001


Semimetal and Topological Insulator in Perovskite Iridates
text, January 2011


Infrared evidence of a Slater metal-insulator transition in NaOsO3
text, January 2013


Slater Insulator in Iridate Perovskites with Strong Spin-Orbit Coupling
text, January 2017


Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.