de.mpg.escidoc.pubman.appbase.FacesBean
English
 
Help Guide Disclaimer Contact us Login
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Quadrupole effects in tetragonal crystals PrCu2Si2 and DyCu2Si2

MPS-Authors
There are no MPG-Authors available
Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Mitsumoto, K., Goto, S., Nemoto, Y., Akatsu, M., Goto, T., Dung, N. D., et al. (2013). Quadrupole effects in tetragonal crystals PrCu2Si2 and DyCu2Si2. Journal of Physics: Condensed Matter, 25(29): 296002, pp. 296002-1-296002-8. doi:10.1088/0953-8984/25/29/296002.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0015-1E88-0
Abstract
We have investigated quadrupole effects in tetragonal crystals of PrCu2Si2 and DyCu2Si2 by means of low-temperature ultrasonic measurements. The elastic constant C-44 of PrCu2Si2 exhibits pronounced softening below 70 K down to a Neel temperature T-N = 20 K, which is described in terms of a quadrupole susceptibility for a Gamma(5) doublet ground state and a Gamma(3) singlet first excited state located at 15.6 K in the crystalline electric field scheme. The C-44 and C-66 of DyCu2Si2 also show softening below 70 K down to T-N1 = 9.7 K. A low-lying pseudo-sextet state consisting of three Kramers doublets of Gamma(6) circle plus 2 Gamma(7) brings about softening of C-44 and C-66 in DyCu2Si2.