TY - JOUR
T1 - Quantum oscillation studies of the topological semimetal candidate ZrGeM (M= S, Se, Te)
AU - Hu, J.
AU - Zhu, Y. L.
AU - Graf, D.
AU - Tang, Z. J.
AU - Liu, J. Y.
AU - Mao, Z. Q.
N1 - Funding Information:
This work was supported by the US Department of Energy under Grant No. DE-SC0014208 (support for personnel, material synthesis, and magnetization measurements). The work at the National High Magnetic Field Laboratory is supported by the NSF Cooperative Agreement No. DMR-1157490 and the State of Florida (high field magnetic torque and magnetotransport measurements).
Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/5/22
Y1 - 2017/5/22
N2 - The WHM-type materials (W=Zr/Hf/La, H=Si/Ge/Sn/Sb, M=O/S/Se/Te) have been predicted to be a large pool of topological materials. These materials allow for fine tuning of spin-orbit coupling, lattice constant, and structural dimensionality for various combinations of W, H, and M elements, thus providing an excellent platform to study how these parameters' tuning affects topological semimetal state. In this paper, we report high field quantum oscillation studies on ZrGeM (M=S,Se, and Te), from which we have revealed properties consistent with the theoretically predicted topological semimetal states. From the angular dependence of quantum oscillation frequency, we have also studied the Fermi surface topologies of these materials. Moreover, we have compared Dirac electron behavior between the ZrGeM and ZrSiM systems, which reveals deep insights to the tuning of Dirac state by spin-orbit coupling and lattice constants in the WHM system.
AB - The WHM-type materials (W=Zr/Hf/La, H=Si/Ge/Sn/Sb, M=O/S/Se/Te) have been predicted to be a large pool of topological materials. These materials allow for fine tuning of spin-orbit coupling, lattice constant, and structural dimensionality for various combinations of W, H, and M elements, thus providing an excellent platform to study how these parameters' tuning affects topological semimetal state. In this paper, we report high field quantum oscillation studies on ZrGeM (M=S,Se, and Te), from which we have revealed properties consistent with the theoretically predicted topological semimetal states. From the angular dependence of quantum oscillation frequency, we have also studied the Fermi surface topologies of these materials. Moreover, we have compared Dirac electron behavior between the ZrGeM and ZrSiM systems, which reveals deep insights to the tuning of Dirac state by spin-orbit coupling and lattice constants in the WHM system.
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U2 - 10.1103/PhysRevB.95.205134
DO - 10.1103/PhysRevB.95.205134
M3 - Article
AN - SCOPUS:85023776704
SN - 2469-9950
VL - 95
JO - Physical Review B
JF - Physical Review B
IS - 20
M1 - 205134
ER -