TY - JOUR
T1 - Magnetic order in Tb2 Sn2 O7 under high pressure
T2 - From ordered spin ice to spin liquid and antiferromagnetic order
AU - Mirebeau, I.
AU - Goncharenko, I.
AU - Cao, H.
AU - Forget, A.
PY - 2009/12/14
Y1 - 2009/12/14
N2 - We have studied the Tb2 Sn2 O7 ordered spin ice by neutron diffraction under an isotropic pressure of 4.6 GPa, combined with a stress of 0.3(1) GPa. Measurements down to a temperature of 0.06 K and up to 100 K probe the effect of pressure both on ground state and spin fluctuation in the paramagnetic region. In the pressure-induced ground state, the ordered spin ice structure with a k0 =0 propagation vector persists, but it coexists with a structure with k1 = (0,0,1). The ordered moment at 0.06 K is reduced, suggesting that pressure also enhances the spin liquid fluctuations at T∼0. In the paramagnetic region, applying pressure changes the short-range spin correlations and suppresses the ferromagnetic correlations. The influence of pressure is discussed considering both isotropic pressure and stress effects.
AB - We have studied the Tb2 Sn2 O7 ordered spin ice by neutron diffraction under an isotropic pressure of 4.6 GPa, combined with a stress of 0.3(1) GPa. Measurements down to a temperature of 0.06 K and up to 100 K probe the effect of pressure both on ground state and spin fluctuation in the paramagnetic region. In the pressure-induced ground state, the ordered spin ice structure with a k0 =0 propagation vector persists, but it coexists with a structure with k1 = (0,0,1). The ordered moment at 0.06 K is reduced, suggesting that pressure also enhances the spin liquid fluctuations at T∼0. In the paramagnetic region, applying pressure changes the short-range spin correlations and suppresses the ferromagnetic correlations. The influence of pressure is discussed considering both isotropic pressure and stress effects.
UR - http://www.scopus.com/inward/record.url?scp=77954749607&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.80.220407
DO - 10.1103/PhysRevB.80.220407
M3 - Article
AN - SCOPUS:77954749607
SN - 1098-0121
VL - 80
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 22
M1 - 220407
ER -