mu SR study of antiferromagnetic order in UPt3 alloyed with Pd

被引：18

作者：

deVisser, A ^{[1
]}

Keizer, RJ ^{[1
]}

vanHarrevelt, R ^{[1
]}

Menovsky, AA ^{[1
]}

Franse, JJM ^{[1
]}

Amato, A ^{[1
]}

Gygax, FN ^{[1
]}

Pinkpank, M ^{[1
]}

Schenck, A ^{[1
]}

机构：

[1] ETH ZURICH,INST PARTICLE PHYS,CH-5232 VILLIGEN,SWITZERLAND

来源：

PHYSICA B | 1997年 / 230卷

关键词：

mu SR spectroscopy; antiferromagnetic order; U(Pt; Pd)(3); UPt3;

D O I：

10.1016/S0921-4526(96)00543-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on a mu SR study of the evolution of antiferromagnetism in the heavy-fermion pseudobinary series U(Pt, Pd)(3). For pure UPt3 and U(Pt-0.998 Pd-0.002)(3) no small-moment antiferromagnetism has been observed in the present experiment: the zero-field mu SR data yield a temperature-independent Kubo-Toyabe line width sigma(KT) = 0.06 +/- 0.01 mu s(-1) (T less than or equal to 8 K). As recent neutron-diffraction experiments on UPt3 and U(Pt-0.998 Pd-0.002)(3) do reveal magnetic order, we suggest that the muons stop at high symmetry sites where the dipole fields cancel. However, for the large-moment compound U(Pt-0.95 Pd-0.05)(3), the mu SR data unambiguously show magnetic signals: below T-N two frequencies appear (nu(1) similar or equal to 8.0 MHz and nu(2) similar or equal to 2.0 MHz, for T --> 0), indicating two magnetically inequivalent muon stopping sites.

引用

页码：53 / 55

页数：3

共 10 条

[1] MAGNETIC ORDER AND FLUCTUATIONS IN SUPERCONDUCTING UPT3 [J].

AEPPLI, G ;

BUCHER, E ;

BROHOLM, C ;

KJEMS, JK ;

BAUMANN, J ;

HUFNAGL, J .

PHYSICAL REVIEW LETTERS, 1988, 60 (07) :615-618

[2] ABSENCE OF ZERO-FIELD MUON SPIN RELAXATION INDUCED BY SUPERCONDUCTIVITY IN THE B-PHASE OF UPT3 [J].

DEREOTIER, PD ;

HUXLEY, A ;

YAOUANC, A ;

FLOUQUET, J ;

BONVILLE, P ;

IMBERT, P ;

PARI, P ;

GUBBENS, PCM ;

MULDERS, AM .

PHYSICS LETTERS A, 1995, 205 (2-3) :239-243

[3] UPT3, HEAVY FERMIONS AND SUPERCONDUCTIVITY [J].

DEVISSER, A ;

MENOVSKY, A ;

FRANSE, JJM .

PHYSICA B & C, 1987, 147 (01) :81-160

[4] LOW-TEMPERATURE RESISTIVITY MEASUREMENTS OF HEAVY-FERMION U(PT,PD)3 ALLOYS [J].

DEVISSER, A ;

HAEN, P ;

VORENKAMP, T ;

VANSPRANG, M ;

MENOVSKY, AA ;

FRANSE, JJM .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1988, 76-7 :112-114

[5]

DEVISSER A, 1988, J MAGN MAGN MAT, V77

[6]

DEVISSER A, 1996, PHYSICA B

[7]

FRINGS PH, 1986, J MAGN MAGN MAT, V64

[8]

FRINGS PH, 1986, J MAGN MAGN MATER, V63, P202

[9] MUON SPIN ROTATION IN THE MAGNETIC AND SUPERCONDUCTING GROUND-STATES OF (U,TH)BE13 AND (U,TH)PT3 [J].

HEFFNER, RH ;

COOKE, DW ;

GIORGI, AL ;

HUTSON, RL ;

SCHILLACI, ME ;

REMPP, HD ;

SMITH, JL ;

WILLIS, JO ;

MACLAUGHLIN, DE ;

BOEKEMA, C ;

LICHTI, RL ;

OOSTENS, J ;

DENISON, AB .

PHYSICAL REVIEW B, 1989, 39 (16) :11345-11357

[10] MODIFICATION OF THE FERMI-SURFACE INSTABILITY IN UPT3 BY TH SUBSTITUTION [J].

RAMIREZ, AP ;

BATLOGG, B ;

BUCHER, E ;

COOPER, AS .

PHYSICAL REVIEW LETTERS, 1986, 57 (08) :1072-1075

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