Magnetic form factor of UGe2 under high pressure

被引：17

作者：

Kuwahara, K ^{[1
]}

Sagayama, H

Iwasa, K

Kohgi, M

Haga, Y

Onuki, Y

Kakurai, K

Nishi, M

Nakajima, K

Aso, N

Uwatoko, Y

机构：

[1] Tokyo Metropolitan Univ, Fac Sci, Dept Phys, Hachioji, Tokyo 1920397, Japan

[2] Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[3] Osaka Univ, Grad Sch Sci, Toyonaka, Osaka 5600043, Japan

[4] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 312卷

关键词：

UGe2; magnetic form factor;

D O I：

10.1016/S0921-4526(01)01280-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The magnetic form factor in the pressure-induced ferromagnetic superconductor UGe2 has been measured with polarized neutrons. The experiments were performed on single crystal samples at 2 K by applying a magnetic field of 2 T along the easy magnetization axis a under pressures of 0 and 1.4 GPa. In spite of the itinerant nature of the 5f electrons, the shapes of the observed magnetic form factors at both 0 and 1.4 GPa are very close to the theoretical 5f form factor of the free U3+ or U4+ ions calculated by the dipole approximation. The effect of pressure on the 5f form factor seems to be small in spite of the reduction of the magnetic moment. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：106 / 108

页数：3

共 12 条

[1] Brown P. J., 1992, INT TABLES CRYSTALLO, VC, P391
[2] NEUTRON MAGNETIC FORM-FACTORS OF URANIUM IONS
FREEMAN, AJ
DESCLAUX, JP
LANDER, GH
FABER, J
[J]. PHYSICAL REVIEW B, 1976, 13 (03): : 1168 - 1176
[3] UGe2:: A ferromagnetic spin-triplet superconductor -: art. no. 144519
Huxley, A
Sheikin, I
Ressouche, E
Kernavanois, N
Braithwaite, D
Calemczuk, R
Flouquet, J
[J]. PHYSICAL REVIEW B, 2001, 63 (14)
[4] Menovsky A., 1983, High Field Magnetism. Proceedings of the International Symposium, P189
[5] MAGNETIC AND ELECTRICAL-PROPERTIES OF U-GE INTERMETALLIC COMPOUNDS
ONUKI, Y
UKON, I
YUN, SW
UMEHARA, I
SATOH, K
FUKUHARA, T
SATO, H
TAKAYANAGI, S
SHIKAMA, M
OCHIAI, A
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1992, 61 (01) : 293 - 299
[6] ANOMALOUS THERMAL-EXPANSION OF SINGLE-CRYSTALLINE UGE2
OOMI, G
NISHIMURA, K
ONUKI, Y
YUN, SW
[J]. PHYSICA B-CONDENSED MATTER, 1993, 186-88 : 758 - 760
[7] MAGNETIZATION DENSITY IN HEAVY-FERMION UPD2AL3
PAOLASINI, L
PAIXAO, JA
LANDER, GH
DELAPALME, A
SATO, N
KOMATSUBARA, T
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, 5 (47) : 8905 - 8910
[8] SAGAYAMA H, 2001, J PHYS SOC JAPAN SA, V70, P28
[9] Superconductivity on the border of itinerant-electron ferromagnetism in UGe2
Saxena, SS
Agarwal, P
Ahilan, K
Grosche, FM
Haselwimmer, RKW
Steiner, MJ
Pugh, E
Walker, IR
Julian, SR
Monthoux, P
Lonzarich, GG
Huxley, A
Sheikin, I
Braithwaite, D
Flouquet, J
[J]. NATURE, 2000, 406 (6796) : 587 - 592
[10] INDUCED-MOMENT MAGNETIC FORM-FACTOR OF THE HEAVY-FERMION SUPERCONDUCTORS UPT3, UBE13, AND CECU2SI2
STASSIS, C
ARTHUR, J
MAJKRZAK, CF
AXE, JD
BATLOGG, B
REMEIKA, J
FISK, Z
SMITH, JL
EDELSTEIN, AS
[J]. PHYSICAL REVIEW B, 1986, 34 (06): : 4382 - 4385

← 1 2 →