Title: Magnetic and electronic ordering phenomena in the ${\mathrm{Ru}}_2{\mathrm{O}}_6$ -layer honeycomb lattice compound ${\mathrm{AgRuO}}_3$

Abstract

The silver ruthenium oxide AgRuO₃ consists of honeycomb $$Ru_{2}^{5+}O_{6}^{2–}$$ layers and can be considered an analogue of SrRu2O₆ with a different intercalation. We present measurements of magnetic susceptibility and specific heat on AgRuO₃ single crystals, which reveal a sharp antiferromagnetic transition at 342(3) K. The electrical transport in single crystals of AgRuO₃ is determined by a combination of activated conduction over an intrinsic semiconducting gap of ≈100 meV and carriers trapped and thermally released from defects. From powder neutron diffraction data a Néel-type antiferromagnetic structure with the Ru moments along the c axis is derived. Raman spectroscopy on AgRuO₃ single crystals and muon spin rotation spectroscopy on powder samples indicate a further weak phase transition or a crossover in the temperature range 125–200 K. The transition does not show up in the magnetic susceptibility, and its origin is argued to be related to defects but cannot be fully clarified. The experimental findings are complemented by density-functional-theory-based electronic structure calculations. It is found that the magnetism in AgRuO₃ is similar to that in SrRu₂O₆, however, with stronger intralayer and weaker interlayer magnetic exchange interactions.

Authors:

Schnelle, Walter; Prasad, Beluvalli E.; Felser, Claudia ;

• Search DOE PAGES for author "Felser, Claudia"
• Search DOE PAGES for ORCID "0000-0002-8200-2063"

Jansen, Martin ;

• Search DOE PAGES for author "Jansen, Martin"
• Search DOE PAGES for ORCID "0000-0003-0762-0985"

Komleva, Evgenia V. ;

• Search DOE PAGES for author "Komleva, Evgenia V."
• Search DOE PAGES for ORCID "0000-0001-6093-9675"

Streltsov, Sergey V. ;

• Search DOE PAGES for author "Streltsov, Sergey V."
• Search DOE PAGES for ORCID "0000-0002-2823-1754"

Mazin, Igor I. ;

• Search DOE PAGES for author "Mazin, Igor I."
• Search DOE PAGES for ORCID "0000-0001-9456-7099"

Khalyavin, Dmitry; Manuel, Pascal; Pal, Sukanya; Muthu, D. V. S. ;

• Search DOE PAGES for author "Muthu, D. V. S."
• Search DOE PAGES for ORCID "0000-0002-1801-2259"

Sood, A. K. ;

• Search DOE PAGES for author "Sood, A. K."
• Search DOE PAGES for ORCID "0000-0002-4157-361X"

Klyushina, Ekaterina S.; Lake, Bella ;

• Search DOE PAGES for author "Lake, Bella"
• Search DOE PAGES for ORCID "0000-0003-0034-0964"

Orain, Jean-Christophe; Luetkens, Hubertus

Publication Date:

Fri Jun 04 00:00:00 EDT 2021

Research Org.:

George Mason Univ., Fairfax, VA (United States)

Sponsoring Org.:

USDOE; Russian Foundation for Basic Research; Russian Ministry of Science and Higher Education; German Research Foundation (DFG)

OSTI Identifier:

1786264

Alternate Identifier(s):

OSTI ID: 1830661

Grant/Contract Number:  

SC0021089; 20-32-70019; 20-32-90073; AAAA-A18-118020190095-4; 247310070

Resource Type:

Published Article

Journal Name:

Physical Review B

Additional Journal Information:

Journal Name: Physical Review B Journal Volume: 103 Journal Issue: 21; Journal ID: ISSN 2469-9950

Publisher:

American Physical Society

Country of Publication:

United States

Language:

English

Subject:

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY