TY - JOUR
T1 - Exotic transition in the three-dimensional spin-liquid candidate Tb 2Ti2O7
AU - Yaouanc, A.
AU - Dalmas De Réotier, P.
AU - Chapuis, Y.
AU - Marin, C.
AU - Vanishri, S.
AU - Aoki, D.
AU - Fåk, B.
AU - Regnault, L. P.
AU - Buisson, C.
AU - Amato, A.
AU - Baines, C.
AU - Hillier, A. D.
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2011/11/4
Y1 - 2011/11/4
N2 - The insulator pyrochlore Tb2Ti2O7 is a three-dimensional spin liquid candidate: the strength of the magnetic interaction would normally induce order at 20 K, but according to published muon-spin relaxation and neutron diffraction measurements, it is still in a correlated paramagnetic state down to a temperature of 0.05 K. Our detailed experimental investigation shows that an exotic transition takes place at T t=0.15(2) K. It is characterized by an anomaly in the muon precession frequency shift but not in the specific heat, which nevertheless reveals the signature of degrees of freedom at very low energy. It might be associated with a cooperative Jahn-Teller transition. The robustness of the experimental results is discussed.
AB - The insulator pyrochlore Tb2Ti2O7 is a three-dimensional spin liquid candidate: the strength of the magnetic interaction would normally induce order at 20 K, but according to published muon-spin relaxation and neutron diffraction measurements, it is still in a correlated paramagnetic state down to a temperature of 0.05 K. Our detailed experimental investigation shows that an exotic transition takes place at T t=0.15(2) K. It is characterized by an anomaly in the muon precession frequency shift but not in the specific heat, which nevertheless reveals the signature of degrees of freedom at very low energy. It might be associated with a cooperative Jahn-Teller transition. The robustness of the experimental results is discussed.
UR - http://www.scopus.com/inward/record.url?scp=82455216808&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=82455216808&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.84.184403
DO - 10.1103/PhysRevB.84.184403
M3 - Article
AN - SCOPUS:82455216808
VL - 84
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 18
M1 - 184403
ER -