Signature of pressure-induced phase separation in Ce1-xLaxRu2 system

F. Ono, N. Q. Sun, Yasushi Matsushima, N. L. Saini

Research output: Contribution to journalArticle

Abstract

The Ce1-xLaxRu2 system has been studied for its superconducting and normal-state properties by high-pressure ac-susceptibility measurements as a function of temperature in the range of 4.3-300 K using a cubic anvil pressure cell. The CeRu2 compound shows a sharp transition at the Tc that becomes wider with increasing pressure, getting as wide as ∼1.8 K at a pressure of 7.5 GPa. The transition for the Ce0.91La0.09Ru2 appears with a width of ∼0.7 K (about 3 times wider than that for the CeRu2 at 0.5 GPa) and gets wider with increasing pressure, similar to the case of the CeRu2 system. The pressure-dependent broadening and anomalous Tc behavior of the Ce1-xLaxRu2 could be related to the Fermi surface topological instability that drives the system to get phase separated in the superconducting and weakly antiferromagnetic domains.

Original languageEnglish
Pages (from-to)2144-2148
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume67
Issue number9-10
DOIs
Publication statusPublished - Sep 2006

Fingerprint

Phase separation
signatures
anvils
Fermi surface
Fermi surfaces
magnetic permeability
cells
temperature
Temperature

Keywords

  • A. Superconductors
  • C. High pressure
  • D. Superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Signature of pressure-induced phase separation in Ce1-xLaxRu2 system. / Ono, F.; Sun, N. Q.; Matsushima, Yasushi; Saini, N. L.

In: Journal of Physics and Chemistry of Solids, Vol. 67, No. 9-10, 09.2006, p. 2144-2148.

Research output: Contribution to journalArticle

@article{5aafeac591864a338385aa30aeeb16e7,
title = "Signature of pressure-induced phase separation in Ce1-xLaxRu2 system",
abstract = "The Ce1-xLaxRu2 system has been studied for its superconducting and normal-state properties by high-pressure ac-susceptibility measurements as a function of temperature in the range of 4.3-300 K using a cubic anvil pressure cell. The CeRu2 compound shows a sharp transition at the Tc that becomes wider with increasing pressure, getting as wide as ∼1.8 K at a pressure of 7.5 GPa. The transition for the Ce0.91La0.09Ru2 appears with a width of ∼0.7 K (about 3 times wider than that for the CeRu2 at 0.5 GPa) and gets wider with increasing pressure, similar to the case of the CeRu2 system. The pressure-dependent broadening and anomalous Tc behavior of the Ce1-xLaxRu2 could be related to the Fermi surface topological instability that drives the system to get phase separated in the superconducting and weakly antiferromagnetic domains.",
keywords = "A. Superconductors, C. High pressure, D. Superconductivity",
author = "F. Ono and Sun, {N. Q.} and Yasushi Matsushima and Saini, {N. L.}",
year = "2006",
month = "9",
doi = "10.1016/j.jpcs.2006.05.014",
language = "English",
volume = "67",
pages = "2144--2148",
journal = "Journal of Physics and Chemistry of Solids",
issn = "0022-3697",
publisher = "Elsevier Limited",
number = "9-10",

}

TY - JOUR

T1 - Signature of pressure-induced phase separation in Ce1-xLaxRu2 system

AU - Ono, F.

AU - Sun, N. Q.

AU - Matsushima, Yasushi

AU - Saini, N. L.

PY - 2006/9

Y1 - 2006/9

N2 - The Ce1-xLaxRu2 system has been studied for its superconducting and normal-state properties by high-pressure ac-susceptibility measurements as a function of temperature in the range of 4.3-300 K using a cubic anvil pressure cell. The CeRu2 compound shows a sharp transition at the Tc that becomes wider with increasing pressure, getting as wide as ∼1.8 K at a pressure of 7.5 GPa. The transition for the Ce0.91La0.09Ru2 appears with a width of ∼0.7 K (about 3 times wider than that for the CeRu2 at 0.5 GPa) and gets wider with increasing pressure, similar to the case of the CeRu2 system. The pressure-dependent broadening and anomalous Tc behavior of the Ce1-xLaxRu2 could be related to the Fermi surface topological instability that drives the system to get phase separated in the superconducting and weakly antiferromagnetic domains.

AB - The Ce1-xLaxRu2 system has been studied for its superconducting and normal-state properties by high-pressure ac-susceptibility measurements as a function of temperature in the range of 4.3-300 K using a cubic anvil pressure cell. The CeRu2 compound shows a sharp transition at the Tc that becomes wider with increasing pressure, getting as wide as ∼1.8 K at a pressure of 7.5 GPa. The transition for the Ce0.91La0.09Ru2 appears with a width of ∼0.7 K (about 3 times wider than that for the CeRu2 at 0.5 GPa) and gets wider with increasing pressure, similar to the case of the CeRu2 system. The pressure-dependent broadening and anomalous Tc behavior of the Ce1-xLaxRu2 could be related to the Fermi surface topological instability that drives the system to get phase separated in the superconducting and weakly antiferromagnetic domains.

KW - A. Superconductors

KW - C. High pressure

KW - D. Superconductivity

UR - http://www.scopus.com/inward/record.url?scp=33748306108&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748306108&partnerID=8YFLogxK

U2 - 10.1016/j.jpcs.2006.05.014

DO - 10.1016/j.jpcs.2006.05.014

M3 - Article

AN - SCOPUS:33748306108

VL - 67

SP - 2144

EP - 2148

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

IS - 9-10

ER -