Excitation spectrum and magnetic field effects in a quantum critical spin-orbital system: The case ofFeSc2S4
نویسندگان
چکیده
منابع مشابه
Effects of a magnetic field on the spin-orbital model
We study the effects of a uniform magnetic field on the one dimensional spinorbital model in terms of effective field theories. Two regions are examined: one around the SU(4) point (J=K/4) and the other with K ≪ J [see Eq. (1)]. We found that when J ≤ K/4, the spin and orbital correlation functions exhibit power-law decay with non-universal exponents. In the region with J > K/4, the excitation ...
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The spinel FeSc_{2}S_{4} has been proposed to realize a near-critical spin-orbital singlet (SOS) state, where entangled spin and orbital moments fluctuate in a global singlet state on the verge of spin and orbital order. Here we report powder inelastic neutron scattering measurements that observe the full bandwidth of magnetic excitations and we find that spin-orbital triplon excitations of an ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2009
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.80.224409