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28 March 2024 |
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Article overview
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Magnetic spin ladder (C5H12N)2CuBr4: high-field magnetization and scaling near quantum criticality | B C Watson
; V N Kotov
; M W Meisel
; D W Hall
; G E Granroth
; W T Montfrooij
; S E Nagler
; D A Jensen
; R Backov
; M A Petruska
; G E Fanucci
; D R Talham
; | Date: |
28 May 2001 | Journal: | Phys Rev Lett, 86 (22), 5168-71 | Abstract: | The magnetization, M(H< or =30 T,0.7< or =T< or =300 K), of (C5H12N)2CuBr4 has been used to identify this system as an S = 1/2 Heisenberg two-leg ladder in the strong-coupling limit, J( perpendicular) = 13.3 K and J( parallel) = 3.8 K, with H(c1) = 6.6 T and H(c2) = 14.6 T. An inflection point in M(H,T = 0.7 K) at half saturation, M(s)/2, is described by an effective XXZ chain. The data exhibit universal scaling behavior in the vicinity of H(c1) and H(c2), indicating that the system is near a quantum critical point. | Source: | PubMed, pmid11384448 | Services: | Forum | Review | Favorites |
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