INCOMMENSURATE MAGNETIC ORDER IN THE HEAVY-FERMION SUPERCONDUCTOR UNI2AL3

被引：57

作者：

SCHRODER, A

LUSSIER, JG

GAULIN, BD

GARRETT, JD

BUYERS, WJL

REBELSKY, L

SHAPIRO, SM

机构：

[1] ATOM ENERGY CANADA LTD,CHALK RIVER NUCL LABS,CHALK RIVER K0J 1J0,ONTARIO,CANADA

[2] BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.72.136

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Neutron scattering measurements show UNi2Al3 to be unique among heavy fermion superconductors in that below T(N) approximately 5.2 K it displays long range magnetic order which is incommensurate with its chemical lattice. The ordering wave vector is (1/2 +/- delta, 0, 1/2) where delta = 0.110 +/- 0.003. The measured superlattice intensities are well described by the presence of a longitudinal spin density wave within the hexagonal basal plane, polarized along a*. The magnitude of the maximum ordered moment is found to be very small; mu(ord) = (0.24 +/- 0.10)mu(B).

引用

页码：136 / 139

页数：4

共 23 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] MU+SR STUDIES OF UM2AL3, M = NI, PD [J].

AMATO, A ;

GEIBEL, C ;

GYGAX, FN ;

HEFFNER, RH ;

KNETSCH, E ;

MACLAUGHLIN, DE ;

SCHANK, C ;

SCHENCK, A ;

STEGLICH, F ;

WEBER, M .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1992, 86 (02) :159-160

[3] TRIPLE-Q-] MODULATED MAGNETIC-STRUCTURE AND CRITICAL BEHAVIOR OF NEODYMIUM [J].

BAK, P ;

LEBECH, B .

PHYSICAL REVIEW LETTERS, 1978, 40 (12) :800-803

[4] POSSIBILITY OF OBSERVATION OF NONTRIVIAL MAGNETIC ORDER BY ELASTIC NEUTRON-SCATTERING IN MAGNETIC-FIELD [J].

BARZYKIN, V ;

GORKOV, LP .

PHYSICAL REVIEW LETTERS, 1993, 70 (16) :2479-2482

[5] MAGNETIC EXCITATIONS AND ORDERING IN THE HEAVY-ELECTRON SUPERCONDUCTOR URU2SI2 [J].

BROHOLM, C ;

KJEMS, JK ;

BUYERS, WJL ;

MATTHEWS, P ;

PALSTRA, TTM ;

MENOVSKY, AA ;

MYDOSH, JA .

PHYSICAL REVIEW LETTERS, 1987, 58 (14) :1467-1470

[6] URANIUM-BASED HEAVY-FERMION SUPERCONDUCTORS - AN EXPERIMENTAL SURVEY [J].

DEVISSER, A ;

FRANSE, JJM .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1991, 100 (1-3) :204-217

[7] SPIN-DENSITY-WAVE ANTIFERROMAGNETISM IN CHROMIUM [J].

FAWCETT, E .

REVIEWS OF MODERN PHYSICS, 1988, 60 (01) :209-283

[8]

GAULIN BD, IN PRESS

[9] A NEW HEAVY-FERMION SUPERCONDUCTOR - UNI2AL3 [J].

GEIBEL, C ;

THIES, S ;

KACZOROWSKI, D ;

MEHNER, A ;

GRAUEL, A ;

SEIDEL, B ;

AHLHEIM, U ;

HELFRICH, R ;

PETERSEN, K ;

BREDL, CD ;

STEGLICH, F .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1991, 83 (03) :305-306

[10] HEAVY-FERMION SUPERCONDUCTIVITY AT TC=2K IN THE ANTIFERROMAGNET UPD2AL3 [J].

GEIBEL, C ;

SCHANK, C ;

THIES, S ;

KITAZAWA, H ;

BREDL, CD ;

BOHM, A ;

RAU, M ;

GRAUEL, A ;

CASPARY, R ;

HELFRICH, R ;

AHLHEIM, U ;

WEBER, G ;

STEGLICH, F .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1991, 84 (01) :1-2

← 1 2 3 →