Record Details


Field	Value

Title	Competition between magnetism and superconductivity in tmni2b2c observed by muon-spin rotation

Names	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
Date Issued	1995 (iso8601)
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.
Genre	Note
Identifier	PHYSICAL REVIEW B,52(6)R3864-R3867

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