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Magnetic structure and excitations of the topological semimetal YbMnBi2

Physical Review B American Physical Society 100:14 (2019) 144431

Authors:

Jian-Rui Soh, H Jacobsen, B Ouladdiaf, A Ivanov, A Piovano, T Tejsner, Z Feng, H Wang, H Su, Y Guo, Y Shi, Andrew Boothroyd

Abstract:

We investigated the magnetic structure and dynamics of YbMnBi2, with elastic and inelastic neutron scattering, to shed light on the topological nature of the charge carriers in the antiferromagnetic phase. We confirm C-type antiferromagnetic ordering of the Mn spins below TN = 290 K and determine that the spins point along the c axis to within about 3◦. The observed magnon spectrum can be described very well by the same effective spin Hamiltonian that was used previously to model the magnon spectrum of CaMnBi2. Our results show conclusively that the creation of Weyl nodes in YbMnBi2 by the time-reversal symmetry-breaking mechanism can be excluded in the bulk.
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Magnetic structure and excitations of the topological semimetal YbMnBi2

PHYSICAL REVIEW B 100:14 (2019) ARTN 144431

Authors:

Jian-Rui Soh, Henrik Jacobsen, Bachir Ouladdiaf, Alexandre Ivanov, Andrea Piovano, Tim Tejsner, Zili Feng, Hongyuan Wang, Hao Su, Yanfeng Guo, Youguo Shi, Andrew T Boothroyd
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Selective probing of magnetic order on Tb and Ir sites in stuffed Tb$_{2+x}$Ir$_{2-x}$O$_{7-y}$ using resonant X-ray scattering

(2019)

Authors:

C Donnerer, MC Rahn, E Schierle, RS Perry, LSI Veiga, G Nisbet, SP Collins, D Prabhakaran, AT Boothroyd, DF McMorrow
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Synthesis and Properties of a Compositional Series of MIL-53(Al) Metal–Organic Framework Crystal-Glass Composites

Journal of the American Chemical Society American Chemical Society (ACS) 141:39 (2019) 15641-15648

Authors:

Christopher W Ashling, Duncan N Johnstone, Remo N Widmer, Jingwei Hou, Sean M Collins, Adam F Sapnik, Alice M Bumstead, Paul A Midgley, Philip A Chater, David A Keen, Thomas D Bennett
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Strong quantum fluctuations due to competition between magnetic phases in a pyrochlore iridate

(2019)

Authors:

Henrik Jacobsen, Cameron D Dashwood, Elsa Lhotel, Dmitry Khalyavin, Pascal Manuel, Ross Stewart, Dharmalingam Prabhakaran, Desmond F McMorrow, Andrew T Boothroyd
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