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We review recent theoretical and experimental advances toward understanding the effects of nuclear spins in confined nanostructures. These systems, which include quantum dots, defect centers, and molecular magnets, are particularly…

Mesoscale and Nanoscale Physics · Physics 2009-09-15 W. A. Coish , J. Baugh

Two geometrically frustrated pyrochlore stannates, undergoing long range magnetic order below 1K, were investigated at very low temperature. Anomalies in the behaviour of hyperfine quantities are found, by 155Gd Mossbauer spectroscopy in…

Strongly Correlated Electrons · Physics 2009-11-13 P. Bonville , I. Mirebeau , J. P. Sanchez

Transverse-field muon-spin rotation ($\mu$SR) experiments were performed on a single crystal sample of the non-centrosymmetric system MnSi. The observed angular dependence of the muon precession frequencies matches perfectly the one of the…

Strongly Correlated Electrons · Physics 2014-06-11 A. Amato , P. Dalmas de Réotier , D. Andreica , A. Yaouanc , A. Suter , G. Lapertot , I. M. Pop , E. Morenzoni , P. Bonfà , F. Bernardini , R. De Renzi

We consider different types of storage rings as precision probes of axion-mediated monopole-dipole forces. We show that current and planned experiments aiming to measure magnetic and electric dipole moments of protons, muons and electrons…

High Energy Physics - Phenomenology · Physics 2023-07-26 Prateek Agrawal , David E. Kaplan , On Kim , Surjeet Rajendran , Mario Reig

Moir\'e heterostructures of transition metal dichalcogenides exhibit Mott-insulating behaviour both at half-filling as well as at fractional fillings, where electronic degrees of freedom form self-organized Wigner crystal states. An open…

Strongly Correlated Electrons · Physics 2024-01-31 Urban F. P. Seifert , Leon Balents

We present the results of a muon-spin relaxation study of GeNi2O4. We provide further clarification of the two transitions to the antiferromagnetic state and measure the magnetic field dependence of the heat capacity up to 14 T. Both…

Strongly Correlated Electrons · Physics 2007-11-14 T. Lancaster , S. J. Blundell , D. Prabhakaran , P. J. Baker , W. Hayes , F. L. Pratt

Spin polarized states in neutron matter at a strong magnetic field are considered in the model with the Skyrme effective interaction (SLy4, SLy7 parametrizations). Analyzing the self-consistent equations at zero temperature, it is shown…

Nuclear Theory · Physics 2009-12-28 A. A. Isayev , J. Yang

The phenomenological theory of ferroelectricity in spiral magnets presented in [M. Mostovoy, Phys. Rev. Lett. 96, 067601 (2006)] is generalized to describe consistently states with both uniform and modulated-in-space ferroelectric…

Materials Science · Physics 2009-11-13 A. Cano , E. I. Kats

We have performed magnetic susceptibility, heat capacity, muon spin relaxation, and neutron scattering measurements on three members of the family Ba3MRu2O9, where M = In, Y and Lu. These systems consist of mixed-valence Ru dimers on a…

Strongly Correlated Electrons · Physics 2017-05-31 D. Ziat , A. A. Aczel , R. Sinclair , Q. Chen , H. D. Zhou , T. J. Williams , M. B. Stone , A. Verrier , J. A. Quilliam

Bose-Einstein condensates of exciton-polaritons are known for their fascinating coherent and polarization properties. The spin state of the condensate is reflected in polarization of the exciton-polariton emission, with temporal…

We present the results of x-ray scattering and muon-spin relaxation ($\mu^{+}$SR) measurements on the iron-pnictide compound FeCrAs. Polarized non-resonant magnetic x-ray scattering results reveal the 120$^\circ$ periodicity expected from…

Strongly Correlated Electrons · Physics 2019-04-30 B. M. Huddart , M. T. Birch , F. L. Pratt , S. J. Blundell , D. G. Porter , S. J. Clark , W. Wu , S. R. Julian , P. D. Hatton , T. Lancaster

Magnetostriction drives a rhombohedral distortion in the cubic rock salt antiferromagnet MnO at the N\'eel temperature $T_{N}=118$ K. As an unexpected consequence we show that this distortion acts to localize the site of an implanted muon…

A recent zero-field (ZF) and longitudinal-field (LF) muon spin relaxation ($\mu$SR) study of YBa$_2$Cu$_3$O$_y$ [Jian~Zhang {\it et al.}, arXiv:1709.06799] claims to have detected critical slowing down of magnetic fluctuations near the…

Superconductivity · Physics 2017-06-12 J. E. Sonier

Significant progress has recently been made in calculating muon stopping sites using density functional theory. The technique aims to address two of the most common criticisms of the muon-spin spectroscopy ($\mu^+$SR) technique, namely,…

Strongly Correlated Electrons · Physics 2022-08-31 B. M. Huddart , A. Hernández-Melián , T. J. Hicken , M. Gomilšek , Z. Hawkhead , S. J. Clark , F. L. Pratt , T. Lancaster

Muon spin rotation measurements have been performed on a powder sample of a-RuCl3, a layered material which previously has been proposed to be a quantum magnet on a honeycomb lattice close to a quantum spin liquid ground state. Our data…

Strongly Correlated Electrons · Physics 2016-07-20 F. Lang , P. J. Baker , A. A. Haghighirad , Y. Li , D. Prabhakaran , R. Valenti , S. J. Blundell

Optically-induced nuclear spin polarization in a fluorine-doped ZnSe epilayer is studied by time-resolved Kerr rotation using resonant excitation of donor-bound excitons. Excitation with helicity-modulated laser pulses results in a…

Mesoscale and Nanoscale Physics · Physics 2016-01-06 F. Heisterkamp , A. Greilich , E. A. Zhukov , E. Kirstein , T. Kazimierczuk , V. L. Korenev , I. A. Yugova , D. R. Yakovlev , A. Pawlis , M. Bayer

We report a study of the organic compound $(TMTSF)_2 ClO_4$ in both a sample cooled very slowly through the anion ordering temperature (relaxed state) and a sample cooled more rapidly (intermediate state). For the relaxed state the entire…

The proton is a composite object with spin one-half, understood to contain highly relativistic spin one-half quarks exchanging spin-one gluons, each possibly with significant orbital angular momenta. While their fundamental interactions are…

High Energy Physics - Phenomenology · Physics 2009-09-01 M. Burkardt , C. A. Miller , W. -D. Nowak

A frustrated system is one whose symmetry precludes the possibility that every pairwise interaction (``bond'') in the system can be satisfied at the same time. Such systems are common in all areas of physical and biological science. In the…

Disordered Systems and Neural Networks · Physics 2009-11-07 Steven T. Bramwell , Michel J. -P. Gingras

An incommensurate spin density wave ($Q$ phase) confined inside the superconducting state at high basal plane magnetic field is an unique property of the heavy fermion metal CeCoIn$_5$. The neutron scattering experiments and the theoretical…

Strongly Correlated Electrons · Physics 2016-06-20 V. P. Mineev
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