29Si NMR and hidden order in URu2Si2 -: art. no. 196402

被引：47

作者：

Bernal, OO ^{[1
]}

Rodrigues, C

Martinez, A

Lukefahr, HG

MacLaughlin, DE

Menovsky, AA

Mydosh, JA

机构：

[1] Calif State Univ Los Angeles, Dept Phys & Astron, Los Angeles, CA 90032 USA

[2] Whittier Coll, Dept Phys, Whittier, CA 90608 USA

[3] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA

[4] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 19期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.87.196402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Below T-N similar to 17 K the Si-29 NMR line in URu2Si2 exhibits a previously unobserved field-independent nearly isotropic contribution to the Linewidth, which increases to similar to 12 G as T --> 0. We argue that this feature does not arise from static freezing of the U-spin magnetization, but is due to coupling between Si-29 spins and a hidden order parameter. We discuss time-reversal symmetry-breaking orbital antiferromagnetism and indirect nuclear spin-spin interactions as possible coupling mechanisms. Further NMR experiments and theoretical calculations are suggested.

引用

页码：1 / 196402

页数：4

共 33 条

[1] Effect of pressure on tiny antiferromagnetic moment in the heavy-electron compound URu2Si2 [J].

Amitsuka, H ;

Sato, M ;

Metoki, N ;

Yokoyama, M ;

Kuwahara, K ;

Sakakibara, T ;

Morimoto, H ;

Kawarazaki, S ;

Miyako, Y ;

Mydosh, JA .

PHYSICAL REVIEW LETTERS, 1999, 83 (24) :5114-5117

[2]

Amitsuka H, 2000, J PHYS SOC JPN, V69, P5

[3] SINGLET MAGNETISM IN HEAVY FERMIONS [J].

BARZYKIN, V ;

GORKOV, LP .

PHYSICAL REVIEW LETTERS, 1995, 74 (21) :4301-4304

[4] NMR detection of temperature-dependent magnetic inhomogeneities in URu2Si2 [J].

Bernal, OO ;

Becker, B ;

Mydosh, JA ;

Nieuwenhuys, GJ ;

Menovsky, AA ;

Paulus, PM ;

Brom, HB ;

MacLaughlin, DE ;

Lukefahr, HG .

PHYSICA B-CONDENSED MATTER, 2000, 281 :236-237

[5] MAGNETIC EXCITATIONS IN THE HEAVY-FERMION SUPERCONDUCTOR URU2SI2 [J].

BROHOLM, C ;

LIN, H ;

MATTHEWS, PT ;

MASON, TE ;

BUYERS, WJL ;

COLLINS, MF ;

MENOVSKY, AA ;

MYDOSH, JA ;

KJEMS, JK .

PHYSICAL REVIEW B, 1991, 43 (16) :12809-12822

[6] 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

[7]

CHANDRA P, 2001, IN PRESS PHYSICA B

[8] Theory of unconventional spin density wave: A possible mechanism of the micromagnetism in U-based heavy fermion compounds [J].

Ikeda, H ;

Ohashi, Y .

PHYSICAL REVIEW LETTERS, 1998, 81 (17) :3723-3726

[9]

JACCARINO V, 1963, MAGNETISM, V2

[10] Hidden ordering and heavy mass in URu2Si2 and its alloys [J].

Kasuya, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1997, 66 (11) :3348-3351

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