Hidden order and disorder effects in URu2Si2

被引:12
作者
Bernal, O. O. [1 ]
Moroz, M. E.
Ishida, K.
Murakawa, H.
Reyes, A. P.
Kuhns, P. L.
MacLaughlin, D. E.
Mydosh, J. A.
Gortenmulder, T. J.
机构
[1] Calif State Univ Los Angeles, Los Angeles, CA 90032 USA
[2] Kyoto Univ, Grad Sch Sci, Kyoto, Japan
[3] Natl High Magnet Field Lab, Tallahassee, FL USA
[4] Univ Calif Riverside, Riverside, CA 92521 USA
[5] Max Planck Inst Chem Phys Solids, Dresden, Germany
[6] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands
基金
美国国家科学基金会;
关键词
URu2Si2; heavy fermions; hidden order;
D O I
10.1016/j.physb.2006.01.547
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
NMR experiments at ambient pressure in URu2Si2 demonstrate a linewidth enhancement effect below the hidden order transition temperature T-0. We present single-crystal Si-29 NMR parameters for various temperatures and for an applied magnetic field perpendicular to the crystal c-axis. By comparing oriented-powder and single-crystal data, we observe that the size of the linewidth enhancement below T-0 correlates with the size of the high-T broadening. We measure a Si-29 up-field line shift below T-0 which indicates the presence of an internal-field average for the entire crystal. This shift also correlates with the high-temperature width. The Ru-101 NQR frequency as a function of temperature was also measured. No strong effect on the NQR frequency is observed at T-0. Both NMR and NQR measurements suggest a connection between linewidth/disorder effects and the transition to hidden order. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:574 / 575
页数:2
相关论文
共 8 条
[1]   Hidden and magnetic order in powdered URu2Si2 found by NMR at ambient pressure [J].
Bernal, OO ;
Moroz, ME ;
MacLaughlin, DE ;
Lukefahr, HG ;
Mydosh, JA ;
Gortenmulder, TJ .
PHYSICA B-CONDENSED MATTER, 2005, 359 :994-996
[2]   29Si NMR and hidden order in URu2Si2 -: art. no. 196402 [J].
Bernal, OO ;
Rodrigues, C ;
Martinez, A ;
Lukefahr, HG ;
MacLaughlin, DE ;
Menovsky, AA ;
Mydosh, JA .
PHYSICAL REVIEW LETTERS, 2001, 87 (19) :1-196402
[3]   Hidden orbital order in the heavy fermion metal URu2Si2 [J].
Chandra, P ;
Coleman, P ;
Mydosh, JA ;
Tripathi, V .
NATURE, 2002, 417 (6891) :831-834
[4]   Group theory and octupolar order in URu2Si2 -: art. no. 054415 [J].
Kiss, A ;
Fazekas, P .
PHYSICAL REVIEW B, 2005, 71 (05)
[5]   PARTIALLY GAPPED FERMI-SURFACE IN THE HEAVY-ELECTRON SUPERCONDUCTOR URU2SI2 [J].
MAPLE, MB ;
CHEN, JW ;
DALICHAOUCH, Y ;
KOHARA, T ;
ROSSEL, C ;
TORIKACHVILI, MS ;
MCELFRESH, MW ;
THOMPSON, JD .
PHYSICAL REVIEW LETTERS, 1986, 56 (02) :185-188
[6]   Ru-101 NQR study of antiferromagnetic superconductor URu2Si2 [J].
Matsuda, K ;
Kohori, Y ;
Kohara, T .
PHYSICA B-CONDENSED MATTER, 1997, 230 :351-353
[7]   SUPERCONDUCTING AND MAGNETIC TRANSITIONS IN THE HEAVY-FERMION SYSTEM URU2SI2 [J].
PALSTRA, TTM ;
MENOVSKY, AA ;
VANDENBERG, J ;
DIRKMAAT, AJ ;
KES, PH ;
NIEUWENHUYS, GJ ;
MYDOSH, JA .
PHYSICAL REVIEW LETTERS, 1985, 55 (24) :2727-2730
[8]  
VARMA CM, CONDMAT0502344 V1