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

Stockert, O., Huster, F., Neubert, A., Pfleiderer, C., Pietrus, T., Will, B., et al. (2002). Pressure versus magnetic-field tuning of a magnetic quantum phase transition. Physica B, 312, 458-460. doi:10.1016/S0921-4526(01)01142-5.

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 Creators:
Stockert, O.1, Author              
Huster, F., Author
Neubert, A., Author
Pfleiderer, C., Author
Pietrus, T., Author
Will, B., Author
von Löhneysen, H., Author
Affiliations:
1Oliver Stockert, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863476              

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Free keywords: quantum phase transition; heavy-fermion systems
 Abstract: The low temperature properties of CeCu6-xAux show different behavior at the quantum phase transition depending on how the long-range antiferromagnetic order is suppressed. Tuning by hydrostatic pressure p results in a temperature dependence of the specific heat C(T) and the electrical resistivity rho(T) as C/T = a ln(T-0/T) and rho approximate to rho(0) + A'T, while C/T = gamma(0) - a'T-0.5 and rho approximate to rho(0) + A"T- 1.5 when tuned by applying a magnetic field B. The magnetic (p, T) and (B, T) phase diagrams as inferred from specific heat, electrical resistivity and neutron diffraction measurements are distinctly different. These findings suggest that the spectra of the low-lying magnetic fluctuations near these quantum phase transitions differ. (C) 2002 Elsevier Science B.V. All rights reserved.

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Language(s): eng - English
 Dates: 2002-03
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 18513
ISI: 000175871000169
DOI: 10.1016/S0921-4526(01)01142-5
 Degree: -

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Title: Physica B
  Alternative Title : Physica B
Source Genre: Journal
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Pages: - Volume / Issue: 312 Sequence Number: - Start / End Page: 458 - 460 Identifier: ISSN: 0921-4526