Possible realization of three-dimensional quantum spin liquid behavior in HoVO₄

Abstract

The study of geometrically frustrated magnetic systems with unusual crystal field ground states offers a possibility of realizing the new aspects of physics of disordered systems. In this study, we report our results of structural, magnetic susceptibility, heat capacity measurements, along with density functional theory calculations on HoVO4; a compound in which the presence of a distorted kind of HoO8 polyhedral leads to multiple magnetic interaction paths. The observed broad maximum below 10 K in the temperature response of DC susceptibility curves implies the presence of short-range correlations. AC susceptibility rules out the possibility of any kind of spin freezing. Temperature dependent heat capacity measurement at zero field indicate towards the absence of long-range ordering, along with the presence of a broad maximum centered around 14 K. The residual heat capacity exhibits a characteristic power-law (Tα) behavior with the exponent α nearly equal to 2, which is analogous to that observed for other 3D quantum spin liquid systems. The density functional theory calculations signify the presence of dominant second and third nearest neighbor interactions, which in turn lead to magnetic frustration in our system. Our investigations suggest that HoVO4 can be a promising candidate for realizing a 3D quantum spin liquid state.

Enhanced cryogenic magnetocaloric performance and the existence of short-range magnetic correlations in frustrated diamond geometries

“…The fit using equation ( 3 The curves show a broad hump followed by an upturn at low temperatures. This kind of hump in C m (T) data has also been observed in several frustrated systems owing to the presence of short-range magnetic correlations [31,32,37]. Hence, it can be said that the observed hump in the present case is possibly due to short-range magnetic correlations.…”

A plausible investigation of low dimensional magnetism in a 3D spin system PrVO4

“…For another member HoVO 4 , a QSL state is reported, which arises due to the dominance of frustrated geometries formed by the 2 nd and 3 rd NN Ho spins. 20 For a rare-earth-based system to exhibit low D magnetism, strong crystal field effects are required such that the ground state can be determined by S only. This motivated us to investigate another member PrVO 4 ( S = 1) as Ce and Pr lie next to each other, and in CeVO 4 , strong crystal field effects are observed.…”

Evolution of field induced magnetic phase attributed to higher order magnetic moments in TbVO4

“…CeVO 4 shows the evidences of strong crystal field effects which results in magnetic ground state associated with effective spin-1 2 9 . Another member HoVO 4 exhibits signatures of QSL state due to the dominance of frustrated 2nd and 3rd near neighbour Ho atoms 10 . In ErVO 4 , a field induced magnetic anomaly along with a magnetic phase ascribed to positive fifth order susceptibility is reported 11 .…”