Low-Temperature Low-Field Phases of the Pyrochlore Quantum Magnet Tb${}_2$Ti${}_2$O${}_7$

L. Yin, J. S. Xia, Y. Takano +3

By means of ac magnetic-susceptibility measurements, we find evidence for a new magnetic phase of Tb${}_2$Ti${}_2$O${}_7$ below about 140 mK in zero magnetic field. In magnetic fields pa…