Pressure versus magnetic-field tuning of a magnetic quantum phase transition

H. V. Löhneysen; C. Pfleiderer; T. Pietrus; O. Stockert; B. Will

doi:10.1103/PhysRevB.63.134411

Pressure versus magnetic-field tuning of a magnetic quantum phase transition

H. V. Löhneysen
, C. Pfleiderer
, T. Pietrus
, O. Stockert
, B. Will

University of Karlsruhe

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

Specific heat C(T) and electrical resistivity ρ(T) of CeCu_6-xAu_x at very low temperatures T show distinctly different behavior depending on whether long-range antiferromagnetic order is suppressed by hydrostatic pressure p or an applied magnetic field B. p tuning yields C/T = a ln(T₀/T) and ρ≈ρ₀+A'T, while B tuning shows C/T = γ₀ - a'T^0.5 and ρ≈ρ₀+A"T^1.5. This suggests that the spectrum of low-lying excitations that determines the behavior near these quantum phase transitions differs.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	63
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.63.134411
State	Published - 2001
Externally published	Yes

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title = "Pressure versus magnetic-field tuning of a magnetic quantum phase transition",

abstract = "Specific heat C(T) and electrical resistivity ρ(T) of CeCu6-xAux at very low temperatures T show distinctly different behavior depending on whether long-range antiferromagnetic order is suppressed by hydrostatic pressure p or an applied magnetic field B. p tuning yields C/T = a ln(T0/T) and ρ≈ρ0+A'T, while B tuning shows C/T = γ0 - a'T0.5 and ρ≈ρ0+A{"}T1.5. This suggests that the spectrum of low-lying excitations that determines the behavior near these quantum phase transitions differs.",

author = "L{\"o}hneysen, \{H. V.\} and C. Pfleiderer and T. Pietrus and O. Stockert and B. Will",

note = "Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft and the European Science Foundation through the FERLIN program.",

year = "2001",

doi = "10.1103/PhysRevB.63.134411",

language = "English",

volume = "63",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

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T1 - Pressure versus magnetic-field tuning of a magnetic quantum phase transition

AU - Löhneysen, H. V.

AU - Pfleiderer, C.

AU - Pietrus, T.

AU - Stockert, O.

AU - Will, B.

N1 - Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft and the European Science Foundation through the FERLIN program.

PY - 2001

Y1 - 2001

N2 - Specific heat C(T) and electrical resistivity ρ(T) of CeCu6-xAux at very low temperatures T show distinctly different behavior depending on whether long-range antiferromagnetic order is suppressed by hydrostatic pressure p or an applied magnetic field B. p tuning yields C/T = a ln(T0/T) and ρ≈ρ0+A'T, while B tuning shows C/T = γ0 - a'T0.5 and ρ≈ρ0+A"T1.5. This suggests that the spectrum of low-lying excitations that determines the behavior near these quantum phase transitions differs.

AB - Specific heat C(T) and electrical resistivity ρ(T) of CeCu6-xAux at very low temperatures T show distinctly different behavior depending on whether long-range antiferromagnetic order is suppressed by hydrostatic pressure p or an applied magnetic field B. p tuning yields C/T = a ln(T0/T) and ρ≈ρ0+A'T, while B tuning shows C/T = γ0 - a'T0.5 and ρ≈ρ0+A"T1.5. This suggests that the spectrum of low-lying excitations that determines the behavior near these quantum phase transitions differs.

UR - https://www.scopus.com/pages/publications/0034899992

U2 - 10.1103/PhysRevB.63.134411

DO - 10.1103/PhysRevB.63.134411

M3 - Article

AN - SCOPUS:0034899992

SN - 1098-0121

VL - 63

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 13

ER -

Pressure versus magnetic-field tuning of a magnetic quantum phase transition

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