Evidence for non-Fermi liquid behavior in the Kondo alloy Y sub 1 minus x U sub x Pd sub 3

We present measurements of electrical resitivity {rho}({ital T}), specific heat {ital C}({ital T}), entropy {ital S}({ital T}), and magnetic susceptibility {chi}({ital T}) as functions of temperature {ital T} for the alloy system Y{sub 1{minus}{ital x}}U{sub {ital x}}Pd{sub 3}. For {ital x}=0.2, {rh...

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Bibliographic Details
Published in:Physical review letters 1991-11, Vol.67:20
Main Authors: Seaman, C.L., Maple, M.B., Lee, B.W., Ghamaty, S., Torikachvili, M.S., Kang, J., Liu, L.Z., Allen, J.W., Cox, D.L.
Format: Article
Language:English
Subjects:
360104 - Metals & Alloys- Physical Properties
ACTINIDE ALLOYS
ALLOY SYSTEMS
ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENTROPY
KONDO EFFECT
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MATERIALS SCIENCE
PALLADIUM ALLOYS
PHYSICAL PROPERTIES
PLATINUM METAL ALLOYS
SPECIFIC HEAT
TEMPERATURE DEPENDENCE
TERNARY ALLOY SYSTEMS
THERMODYNAMIC PROPERTIES
ULTRALOW TEMPERATURE
URANIUM ALLOYS
VERY LOW TEMPERATURE
YTTRIUM ALLOYS
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Summary:We present measurements of electrical resitivity {rho}({ital T}), specific heat {ital C}({ital T}), entropy {ital S}({ital T}), and magnetic susceptibility {chi}({ital T}) as functions of temperature {ital T} for the alloy system Y{sub 1{minus}{ital x}}U{sub {ital x}}Pd{sub 3}. For {ital x}=0.2, {rho}({ital T})/{rho}(0) is almost linear in {ital T} for 0.2{le}{ital T}{le}20 K, and {ital C}({ital T})/{ital T}{similar to}{minus}ln({alpha}{ital T}) for 0.6{lt}{ital T}{lt}16 K. Also, the added molar entropy per {ital U}, {Delta}{ital S}({ital T}){minus}{Delta}{ital S}(0) appears to saturate to ({ital R}/2)ln(2), suggesting that {Delta}{ital S}(0){approx}({ital R}/2)ln(2). We argue that our data provide comprehensive evidence in a dilute alloy for the two-channel quadrupolar Kondo effect ({ital T}{sub {ital K}}{approx}42 K) with concomitant marginal Fermi liquid'' phenomenology.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.67.2882