Publication detail

Multiferroic quantum criticality in a (Eu,Ba,Sr)TiO3 solid solution

ŘEPČEK, D. PROSCHEK, P. SAVINOV, M. KACHLÍK, M. POSPÍŠIL, J. DRAHOKOUPIL, J. DOLEŽAL, P. PROKLEŠKA, J. KAMBA, S.

Original Title

Multiferroic quantum criticality in a (Eu,Ba,Sr)TiO3 solid solution

Type

journal article in Web of Science

Language

English

Original Abstract

Based on the earlier published theory [A. Narayan, Nat. Mater. 18, 223 (2019)], a comprehensive experimental investigation of multiferroic quantum critical behavior of (Eu,Ba,Sr)TiO3 polycrystalline and single-crystal samples was performed. The presence of the displacive ferroelectric quantum criticality is revealed through nonclassical (T-2) temperature scaling of inverse dielectric susceptibility up to 60 K. With increasing hydrostatic pressure, this ferroelectric quantum criticality is gradually suppressed. Inverse magnetic susceptibility follows classical Curie-Weiss law down to 4 K, but quantum fluctuations belonging to an antiferromagnetic phase transition (T-N < 0.8 K) change its scaling below 3 K to T( (1.7 +/- 0.1) )and T ((2.1 +/- 0.2)) for samples containing 29% and 25% of Eu2+ ions, respectively. Experimental indications of the coexisting ferroelectric and antiferromagnetic, i.e., multiferroic, quantum fluctuations and qualitative explanation of why they could be seen only in the immediate proximity of T-N is given.

Keywords

CRITICAL-BEHAVIOR; PHASE-TRANSITION; DIELECTRIC-PROPERTIES; SINGLE-CRYSTAL; SRTIO3S; UPERCONDUCTIVITY

Authors

ŘEPČEK, D.; PROSCHEK, P.; SAVINOV, M.; KACHLÍK, M.; POSPÍŠIL, J.; DRAHOKOUPIL, J.; DOLEŽAL, P.; PROKLEŠKA, J.; KAMBA, S.

Released

20. 6. 2024

Publisher

AMER PHYSICAL SOC

Location

COLLEGE PK

ISBN

2469-9969

Periodical

PHYSICAL REVIEW B

Year of study

109

Number

21

State

United States of America

Pages count

9

URL

https://journals.aps.org/prb/abstract/10.1103/PhysRevB.109.214109

BibTex

@article{BUT190009,
  author="Dalibor {Řepček} and Petr {Proschek} and Maxim {Savinov} and Martin {Kachlík} and Jiří {Pospíšil} and Jan {Drahokoupil} and Petr {Doležal} and Jan {Prokleška} and Stanislav {Kamba}",
  title="Multiferroic quantum criticality in a (Eu,Ba,Sr)TiO3 solid solution",
  journal="PHYSICAL REVIEW B",
  year="2024",
  volume="109",
  number="21",
  pages="9",
  doi="10.1103/PhysRevB.109.214109",
  issn="2469-9969",
  url="https://journals.aps.org/prb/abstract/10.1103/PhysRevB.109.214109"
}