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Entropy balance and evidence for local spin singlets in a Kagome-like magnet

Ramirez AP; Hessen B; Winklemann M.

Phys Rev Lett ; 84(13): 2957-60, 2000 Mar 27.

Artículo en Inglés | MEDLINE | ID: mdl-11018985

RESUMEN

We have measured the specific heat C(T) of the S = 3 / 2 Kagome-lattice-containing compound SrCr (9p)Ga (12-9p)O (19). We find little field dependence of the low-temperature C(T), consistent with a low-energy spectrum dominated by many-body singlet excitations. At high temperatures, we recover only approximately 50% of the total R ln4 entropy.

Isolated spin pairs and two dimensional magnetism in SrCr9pGa12-9pO19.

Lee S; Broholm C; Aeppli G; Perring TG; Hessen B; Taylor A.

Phys Rev Lett ; 76(23): 4424-4427, 1996 Jun 03.

Artículo en Inglés | MEDLINE | ID: mdl-10061286

Synthesis and characterization of Ba3(Pb1-xBix)2O7.

Cava RJ; Takagi H; Zandbergen HW; Hessen B; Krajewski JJ; Peck WF.

Phys Rev B Condens Matter ; 46(21): 14101-14104, 1992 Dec 01.

Artículo en Inglés | MEDLINE | ID: mdl-10003481

Pseudotenfold symmetry in pentane-solvated C60 and C70.

Fleming RM; Kortan AR; Hessen B; Siegrist T; Thiel FA; Marsh P; Haddon RC; Tycko R; Dabbagh G; Kaplan ML; Mujsce AM.

Phys Rev B Condens Matter ; 44(2): 888-891, 1991 Jul 01.

Artículo en Inglés | MEDLINE | ID: mdl-9999206

RESUMEN

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