Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: Quantum Magnetic Properties in Perovskite with Anderson Localized Artificial Spin‐1/2

Abstract

Abstract Quantum magnetic properties in a geometrically frustrated lattice of spin‐1/2 magnet, such as quantum spin liquid or solid and the associated spin fractionalization, are considered key in developing a new phase of matter. The feasibility of observing the quantum magnetic properties, usually found in geometrically frustrated lattice of spin‐1/2 magnet, in a perovskite material with controlled disorder is demonstrated. It is found that the controlled chemical disorder, due to the chemical substitution of Ru ions by Co‐ions, in a simple perovskite CaRuO 3 creates a random prototype configuration of artificial spin‐1/2 that forms dimer pairs between the nearest and further away ions. The localization of the Co impurity in the Ru matrix is analyzed using the Anderson localization formulation. The dimers of artificial spin‐1/2, due to the localization of Co impurities, exhibit singlet‐to‐triplet excitation at low temperature without any ordered spin correlation. The localized gapped excitation evolves into a gapless quasi‐continuum as dimer pairs break and create freely fluctuating fractionalized spins at high temperature. Together, these properties hint at a new quantum magnetic state with strong resemblance to the resonance valence bond system.

Authors:
 [1];  [1];  [1];  [2];  [3];  [4];  [5];  [6];  [7];  [1]
+ Show Author Affiliations
  1. Department of Physics and Astronomy University of Missouri Columbia MO 65211‐7010 USA
  2. NIST Center for Neutron Research Gaithersburg MD 20878 USA, Department of Materials Science and Engineering University of Maryland College Park MD 20742 USA
  3. NIST Center for Neutron Research Gaithersburg MD 20878 USA
  4. Max‐Planck‐Institut für Mikrostrukturphysik Weinberg 2 06120 Halle Germany
  5. University of Missouri Research Reactor Columbia MO 65211 USA
  6. Department of Physics and Medical Engineering Rzeszów University of Technology 35‐959 Rzeszów Poland
  7. Max‐Planck‐Institut für Mikrostrukturphysik Weinberg 2 06120 Halle Germany, Institut für Theoretische Physik Johannes Kepler Universität 4040 Linz Austria
Publication Date:
Research Org.:
Univ. of Missouri, Columbia, MO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1423485
Alternate Identifier(s):
OSTI ID: 1423486; OSTI ID: 1499006
Grant/Contract Number:  
DE‐SC0014461; SC0014461
Resource Type:
Published Article
Journal Name:
Advanced Science
Additional Journal Information:
Journal Name: Advanced Science Journal Volume: 5 Journal Issue: 5; Journal ID: ISSN 2198-3844
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
Germany
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; Anderson localization; perovskites; singlet-triplet transitions; quantum magnetism

Citation Formats

Gunasekera, Jagath, Dahal, Ashutosh, Chen, Yiyao, Rodriguez‐Rivera, Jose A., Harriger, Leland W., Thomas, Stefan, Heitmann, Thomas W., Dugaev, Vitalii, Ernst, Arthur, and Singh, Deepak K. Quantum Magnetic Properties in Perovskite with Anderson Localized Artificial Spin‐1/2. Germany: N. p., 2018. Web. doi:10.1002/advs.201700978.
Copy to clipboard
Gunasekera, Jagath, Dahal, Ashutosh, Chen, Yiyao, Rodriguez‐Rivera, Jose A., Harriger, Leland W., Thomas, Stefan, Heitmann, Thomas W., Dugaev, Vitalii, Ernst, Arthur, & Singh, Deepak K. Quantum Magnetic Properties in Perovskite with Anderson Localized Artificial Spin‐1/2. Germany. https://doi.org/10.1002/advs.201700978
Copy to clipboard
Gunasekera, Jagath, Dahal, Ashutosh, Chen, Yiyao, Rodriguez‐Rivera, Jose A., Harriger, Leland W., Thomas, Stefan, Heitmann, Thomas W., Dugaev, Vitalii, Ernst, Arthur, and Singh, Deepak K. Fri . "Quantum Magnetic Properties in Perovskite with Anderson Localized Artificial Spin‐1/2". Germany. https://doi.org/10.1002/advs.201700978.
Copy to clipboard
@article{osti_1423485,
title = {Quantum Magnetic Properties in Perovskite with Anderson Localized Artificial Spin‐1/2},
author = {Gunasekera, Jagath and Dahal, Ashutosh and Chen, Yiyao and Rodriguez‐Rivera, Jose A. and Harriger, Leland W. and Thomas, Stefan and Heitmann, Thomas W. and Dugaev, Vitalii and Ernst, Arthur and Singh, Deepak K.},
abstractNote = {Abstract Quantum magnetic properties in a geometrically frustrated lattice of spin‐1/2 magnet, such as quantum spin liquid or solid and the associated spin fractionalization, are considered key in developing a new phase of matter. The feasibility of observing the quantum magnetic properties, usually found in geometrically frustrated lattice of spin‐1/2 magnet, in a perovskite material with controlled disorder is demonstrated. It is found that the controlled chemical disorder, due to the chemical substitution of Ru ions by Co‐ions, in a simple perovskite CaRuO 3 creates a random prototype configuration of artificial spin‐1/2 that forms dimer pairs between the nearest and further away ions. The localization of the Co impurity in the Ru matrix is analyzed using the Anderson localization formulation. The dimers of artificial spin‐1/2, due to the localization of Co impurities, exhibit singlet‐to‐triplet excitation at low temperature without any ordered spin correlation. The localized gapped excitation evolves into a gapless quasi‐continuum as dimer pairs break and create freely fluctuating fractionalized spins at high temperature. Together, these properties hint at a new quantum magnetic state with strong resemblance to the resonance valence bond system.},
doi = {10.1002/advs.201700978},
journal = {Advanced Science},
number = 5,
volume = 5,
place = {Germany},
year = {Fri Mar 02 00:00:00 EST 2018},
month = {Fri Mar 02 00:00:00 EST 2018}
}
Copy to clipboard
Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1002/advs.201700978
Copyright Statement
Other availability
Search WorldCat Search WorldCat to find libraries that may hold this journal
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: Controlled disorder and making of spin-1/2 moment. a) Schematic of random Ru-substitution by Co-ion in CaRuO3. At the substitution coefficient of x > 8.3%, at least one Ru-ion is replaced by Co-ion in the lattice unit cell, on the average, that are randomly distributed; necessary to create dimersmore » with varying exchange constants. Oval depicts a dimer formation. b) Calculation of the spin density of opposite polarity confirms that the net moment of Co-ion is comparable to the moment of spin-1/2 system. c) Calculated spin wave dispersion relation in Co-substituted CaRuO3, at x = 0.2, confirms the formation of singlet Co dimers, as schematically shown in (a).« less
All figures and tables (6 total)
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

Works referenced in this record:

Magnetic fluctuations driven insulator-to-metal transition in Ca(Ir1−xRux)O3
journal, December 2015

  • Gunasekera, J.; Harriger, L.; Dahal, A.
  • Scientific Reports, Vol. 5, Issue 1
  • DOI: 10.1038/srep18047

Physical Properties of Single-Crystalline CaRuO 3 Grown by a Floating-Zone Method
journal, January 2009

  • Kikugawa, Naoki; Balicas, Luis; Peter Mackenzie, Andrew
  • Journal of the Physical Society of Japan, Vol. 78, Issue 1
  • DOI: 10.1143/JPSJ.78.014701

Electronic Structure of Impurities in Cu, Calculated Self-Consistently by Korringa-Kohn-Rostoker Green's-Function Method
journal, June 1979

Spin liquids in frustrated magnets
journal, March 2010

Local spin density functional approach to the theory of exchange interactions in ferromagnetic metals and alloys
journal, May 1987

  • Liechtenstein, A. I.; Katsnelson, M. I.; Antropov, V. P.
  • Journal of Magnetism and Magnetic Materials, Vol. 67, Issue 1
  • DOI: 10.1016/0304-8853(87)90721-9

Triplet Waves in a Quantum Spin Liquid
journal, May 2000

Spin-Orbital Short-Range Order on a Honeycomb-Based Lattice
journal, May 2012

Exact Spin Liquid Ground States of the Quantum Dimer Model on the Square and Honeycomb Lattices
journal, June 2012

From high temperature superconductivity to quantum spin liquid: progress in strong correlation physics
journal, December 2007

Spin-Liquid Ground State of the S = 1/2 Kagome Heisenberg Antiferromagnet
journal, April 2011

The effect of Ru-site dopants on the magnetic properties of CaRuO 3
journal, August 2001

Quantum spin liquid emerging in two-dimensional correlated Dirac fermions
journal, April 2010

Quantum Melting of Magnetic Order due to Orbital Fluctuations
journal, April 1997

Quantum Criticality: Competing Ground States in Low Dimensions
journal, April 2000

Quantum-spin-liquid states in the two-dimensional kagome antiferromagnets ZnxCu4−x(OD)6Cl2
journal, August 2007

  • Lee, S. -H.; Kikuchi, H.; Qiu, Y.
  • Nature Materials, Vol. 6, Issue 11
  • DOI: 10.1038/nmat1986

Fractionalized excitations in the spin-liquid state of a kagome-lattice antiferromagnet
journal, December 2012

  • Han, Tian-Heng; Helton, Joel S.; Chu, Shaoyan
  • Nature, Vol. 492, Issue 7429
  • DOI: 10.1038/nature11659

Resonating valence bonds: A new kind of insulator?
journal, February 1973

Numerical solution of the relativistic single-site scattering problem for the Coulomb and the Mathieu potential
journal, October 2015

  • Geilhufe, Matthias; Achilles, Steven; Köbis, Markus Arthur
  • Journal of Physics: Condensed Matter, Vol. 27, Issue 43
  • DOI: 10.1088/0953-8984/27/43/435202

Mott Transition between a Spin-Liquid Insulator and a Metal in Three Dimensions
journal, May 2009

Spin fluctuations in the ruthenium oxides RuO 2 , SrRuO 3 , CaRuO 3 , and Sr 2 RuO 4 probed by Ru NMR
journal, November 1999

Coherent-Potential Model of Substitutional Disordered Alloys
journal, April 1967

Experimental Realization of a 2D Fractional Quantum Spin Liquid
journal, February 2001

Doping a Mott insulator: Physics of high-temperature superconductivity
journal, January 2006

  • Lee, Patrick A.; Nagaosa, Naoto; Wen, Xiao-Gang
  • Reviews of Modern Physics, Vol. 78, Issue 1
  • DOI: 10.1103/RevModPhys.78.17

Molecular Quantum Magnetism in LiZn 2 Mo 3 O 8
journal, January 2014

Gapless quantum spin liquid, stripe, and antiferromagnetic phases in frustrated Hubbard models in two dimensions
journal, July 2006

Ab initio angle-resolved photoemission in multiple-scattering formulation
journal, September 2001

Gapless Spin Liquids on the Three-Dimensional Hyperkagome Lattice of Na 4 Ir 3 O 8
journal, November 2008

Quasilocal critical nature of cooperative paramagnetic fluctuations in CaRuO 3 metal
journal, June 2015

Quasiparticle breakdown in a quantum spin liquid
journal, March 2006

  • Stone, Matthew B.; Zaliznyak, Igor A.; Hong, Tao
  • Nature, Vol. 440, Issue 7081
  • DOI: 10.1038/nature04593
    Sort by:
    [ × clear filter / sort ]

    Figures / Tables found in this record:

    Figure 1 (p. 2)figure
    Figure 2 (p. 3)figure
    Figure 3 (p. 4)figure
    Figure 4 (p. 5)figure
    Figure 5 (p. 5)figure
    Figure 6 (p. 6)figure
      [ × clear filter / sort ]
      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

      Similar Records in DOE PAGES and OSTI.GOV collections: