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Title
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Ferromagnetic quantum critical point in URhGe doped with Ru
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Author
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Abstract
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| We have investigated the thermal, transport, and magnetic properties of URh1-xRuxGe alloys near the critical concentration x(cr)=0.38 for the suppression of ferromagnetic order. The Curie temperature vanishes linearly with x and the ordered moment m(0) is suppressed in a continuous way. At x(cr), the specific heat varies as c similar to T ln T, the gamma value c/T parallel to(0.5 K) is maximum, and the temperature exponent of the resistivity rho similar to T-n attains a minimum value n=1.2. These observations provide evidence for a ferromagnetic quantum phase transition. Interestingly, the coefficient of thermal expansion and the Gruneisen parameter Gamma remain finite at x(cr) (down to T=1 K), which is at odds with recent scaling results for a metallic quantum critical point. |
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Language
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English
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Source (journal)
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Physical review B / American Physical Society. - New York, N.Y, 2016, currens
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Publication
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New York, N.Y
:
American Physical Society
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2007
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ISSN
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2469-9969
[online]
2469-9950
[print]
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DOI
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10.1103/PHYSREVB.75.212405
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Volume/pages
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75
:21
(2007)
, p. 1-4
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Article Reference
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212405
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ISI
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000247624700014
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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