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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/917

Title: Competition between magnetism and superconductivity in tmni2b2c observed by muon-spin rotation
Authors: COOKE, DW
SMITH, JL
BLUNDELL, SJ
CHOW, KH
PATTENDEN, PA
PRATT, FL
COX, SFJ
BROWN, SR
MORROBELSOSA, A
LICHTI, RL
GUPTA, LC
NAGARAJAN, R
HOSSAIN, Z
MAZUMDAR, C
GODART, C
Issue Date: 1995
Publisher: AMERICAN PHYSICAL SOC
Citation: PHYSICAL REVIEW B,52(6)R3864-R3867
Abstract: We report muon-spin-rotation measurements of the internal field in the rare-earth nickel boride carbide superconductor TmNi2B2C from 100 mK up to well above the superconducting transition temperature (T-c=9.5 K). An oscillatory muon response indicates that the muon is affected by a quasistatic local field that follows a T-1 dependence over a wide temperature range and without interruption at the superconducting transition. The corresponding relaxation rate remains constant in the normal state, but begins to rise very sharply with decreasing temperature below T-c scaling approximately with the local field down to its maximum at 2.5 K. The quasistatic internal field may be attributed to a spiral structure or dow three-dimensional correlations of the Tm moments. Decoupling experiments reveal a dynamic depolarization mechanism which may tentatively be ascribed to fast two-dimensional correlations of the Ni moments, slowed by the onset of superconductivity.
URI: http://dspace.library.iitb.ac.in/xmlui/handle/10054/13444
http://hdl.handle.net/100/917
ISSN: 0163-1829
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