Dynamical ground state in the XY pyrochlore Yb2GaSbO7 by P. M. Sarte, K. Cruz-Kan, B. R. Ortiz, K. H. Hong, M. M. Bordelon, D. Reig-i-Plessis, M. Lee, E. S. Choi, M. B. Stone, S. Calder, D. M. Pajerowski, L. Mangin-Thro, Y. Qiu, J. P. Attfield, S. D. Wilson, C. Stock, H. D. Zhou, A. M. Hallas, J. A. M. Paddison, A. A. Aczel, C. R. Wiebe

“…The persistent spin fluctuations observed by muon spin-relaxation measurements at low temperatures have not been adequately explained for this material using existing theories for quantum magnetism. Here we report on the synthesis and characterisation of Yb2GaSbO7 to revisit the nature of the magnetic ground state. …”
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Field-tuned quantum renormalization of spin dynamics in the honeycomb lattice Heisenberg antiferromagnet YbCl3 by Gabriele Sala, Matthew B. Stone, Gábor B. Halász, Mark D. Lumsden, Andrew F. May, Daniel M. Pajerowski, Seiko Ohira-Kawamura, Koji Kaneko, Daniel G. Mazzone, Gediminas Simutis, Jakob Lass, Yasuyuki Kato, Seung-Hwan Do, Jiao Y. Y. Lin, Andrew D. Christianson

“…Abstract The basis for our understanding of quantum magnetism has been the study of elegantly simple model systems. …”
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Signatures of a magnetic field-induced unconventional nematic liquid in the frustrated and anisotropic spin-chain cuprate LiCuSbO4 by H.-J. Grafe, S. Nishimoto, M. Iakovleva, E. Vavilova, L. Spillecke, A. Alfonsov, M.-I. Sturza, S. Wurmehl, H. Nojiri, H. Rosner, J. Richter, U. K. Rößler, S.-L. Drechsler, V. Kataev, B. Büchner

“…Abstract Modern theories of quantum magnetism predict exotic multipolar states in weakly interacting strongly frustrated spin-1/2 Heisenberg chains with ferromagnetic nearest neighbor (NN) inchain exchange in high magnetic fields. …”
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Modulation-induced long-range magnon bound states in one-dimensional optical lattices by Wenjie Liu, Yongguan Ke, Bo Zhu, Chaohong Lee

“…Magnon excitations play an important role in understanding quantum magnetism and magnon bound states observed with ultracold atoms in optical lattices. …”
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Crossover of high-energy spin fluctuations from collective triplons to localized magnetic excitations in Sr14−xCaxCu24O41 ladders by Y. Tseng, J. Thomas, W. Zhang, E. Paris, P. Puphal, R. Bag, G. Deng, T. C. Asmara, V. N. Strocov, S. Singh, E. Pomjakushina, U. Kumar, A. Nocera, H. M. Rønnow, S. Johnston, T. Schmitt

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Ferroelectric Single‐Molecule Magnet with Toroidal Magnetic Moments by Yu‐Xia Wang, Yinina Ma, Jie‐Su Wang, Yue Yang, Yun‐Nan Guo, Yi‐Quan Zhang, Kui‐Juan Jin, Young Sun, Peng Cheng

“…The coexistence of toroidal moment and ferroelectricity along with quantum magnetism in the rare‐earth single‐molecule magnets yields a unique class of multiferroics.…”
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Spin-obit coupling in optical superlattices by Huang, Wujie

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Impact of Erbium Doping in the Structural and Magnetic Properties of the Anisotropic and Frustrated SrYb₂O₄ Antiferromagnet by Diana Lucia Quintero-Castro, Juanita Hincapie, Abhijit Bhat Kademane, Minki Jeong, Matthias Frontzek, Alexandra Franz, Amutha Ramachandran, Fabiano Yokaichiya, J Ross Stewart, Rasmus Toft-Petersen

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Frustration-driven magnetic fluctuations as the origin of the low-temperature skyrmion phase in Co7Zn7Mn6 by V. Ukleev, K. Karube, P. M. Derlet, C. N. Wang, H. Luetkens, D. Morikawa, A. Kikkawa, L. Mangin-Thro, A. R. Wildes, Y. Yamasaki, Y. Yokoyama, L. Yu, C. Piamonteze, N. Jaouen, Y. Tokunaga, H. M. Rønnow, T. Arima, Y. Tokura, Y. Taguchi, J. S. White

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La2Rh Sb4: a new ternary superconducting rhodium-antimonide by Kangqiao Cheng, Wei Xie, Shuo Zou, Huanpeng Bu, Jin-Ke Bao, Zengwei Zhu, Hanjie Guo, Chao Cao, Yongkang Luo

“…Our work may also imply that the broad $Ln_2Tm_{3+\delta}$ Sb _4 ( Ln = rare earth, Tm = Rh, Ir) family may host new material bases where new superconductors, quantum magnetism and other electronic correlation effects could be found.…”
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Strong surface termination dependence of the electronic structure of polar superconductor LaFeAsO revealed by nano-ARPES by Sung Won Jung, Luke C Rhodes, Matthew D Watson, Daniil V Evtushinsky, Cephise Cacho, Saicharan Aswartham, Rhea Kappenberger, Sabine Wurmehl, Bernd Büchner, Timur K Kim

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Chemical Analysis of an Isotopically Labeled Molecule Using Two-Dimensional NMR Spectroscopy at 34 μT by Seong-Joo Lee, Kwon Kyu Yu, Seong-min Hwang, Sangwon Oh, Nam Woong Song, Hak-Sung Jung, Oc Hee Han, Jeong Hyun Shim

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Real time observation of a stationary magneton by Emmanouil Markoulakis, Antonios Konstantaras, John Chatzakis, Rajan Iyer, Emmanuel Antonidakis

“…This actual subatomic quantum magnetic field of an electron at rest, is called Quantum Magnet or else a Magneton. …”
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A series of magnon crystals appearing under ultrahigh magnetic fields in a kagomé antiferromagnet by R. Okuma, D. Nakamura, T. Okubo, A. Miyake, A. Matsuo, K. Kindo, M. Tokunaga, N. Kawashima, S. Takeyama, Z. Hiroi

“…In many quantum magnets, an applied magnetic field competes with the expected zero-field state, leading to complex magnetic behavior. …”
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Field-induced Bose-Einstein condensation and supersolid in the two-dimensional Kondo necklace by Wei-Lin Tu, Eun-Gook Moon, Kwan-Woo Lee, Warren E. Pickett, Hyun-Yong Lee

“…Quantum magnets are a promising platform to aid in the search for a Bose-Einstein condensate and investigations into the underlying mechanisms of these materials are an active area of research. …”
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Frequency Limits of Sequential Readout for Sensing AC Magnetic Fields Using Nitrogen-Vacancy Centers in Diamond by Santosh Ghimire, Seong-joo Lee, Sangwon Oh, Jeong Hyun Shim

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Extreme statistics of the excitations in the random transverse Ising chain by István A. Kovács, Tamás Pető, Ferenc Iglói

“…In random quantum magnets, like the random transverse Ising chain, low energy excitations are localized in rare regions and there are only weak correlations between them. …”
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Many-body localization from random magnetic anisotropy by Jie Gu, Shuanglong Liu, Maher Yazback, Hai-Ping Cheng, X.-G. Zhang

“…We propose exploiting large random magnetic anisotropy, either in magnitude or direction, which can be realized in organometallic quantum magnets. We present the phase diagram of an S=1 Heisenberg chain in terms of both a random magnetic anisotropy and a random magnetic field. …”
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Revealing novel quantum phases in quantum antiferromagnets on random lattices by R. Yu, S. Haas, T. Roscilde

“…Quantum magnets represent an ideal playground for the controlled realization of novel quantum phases and of quantum phase transitions. …”
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Tuning bulk topological magnon properties with light-induced magnons by Bhowmick, Dhiman, Sun, Hao, Yang, Bo, Sengupta, Pinaki

“…Although theoretical modelling and inelastic neutron scattering measurements have indicated the presence of topological magnon bands in multiple quantum magnets, experiments remain unable to detect signal of magnon thermal Hall effect in the quantum magnets, which is a consequence of magnons condensation at the bottom of the bands following Bose Einstein statistics as well as the concentration of Berry curvature at the higher energies. …”
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