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We report on isothermal magnetization, M\"ossbauer spectroscopy, and magnetostriction as well as temperature-dependent alternating-current (ac) susceptibility, specific heat, and thermal expansion of single crystalline and polycrstalline…

Strongly Correlated Electrons · Physics 2018-02-28 M. Fix , A. Jesche , S. G. Jantz , S. A. Bräuninger , H. -H. Klauss , R. S. Manna , I. M. Pietsch , H. A. Höppe , P. C. Canfield

We present measurements on nuclear spin relaxation probed by a single quantum dot in a high-mobility electron gas. Current passing through the dot leads to a spin transfer from the electronic to the nuclear spin system. Applying electron…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 A. K. Huettel , J. Weber , A. W. Holleitner , D. Weinmann , K. Eberl , R. H. Blick

Motivated by a recent proposal by O. P. Sushkov and co-workers to search for a P,T-violating Schiff moment of the $^{207}$Pb nucleus in a ferroelectric solid, we have carried out a high-field nuclear magnetic resonance study of the…

Other Condensed Matter · Physics 2013-01-15 L. -S. Bouchard , A. O. Sushkov , D. Budker , J. J. Ford , A. S. Lipton

Kagome-lattice materials have attracted tremendous interest due to the broad prospect for seeking superconductivity, quantum spin liquid states, and topological electronic structures. Among them, the transition-metal kagome lattices are…

Strongly Correlated Electrons · Physics 2023-01-02 Tao Xie , Qiangwei Yin , Qi Wang , A. I. Kolesnikov , G. E. Granroth , D. L. Abernathy , Dongliang Gong , Zhiping Yin , Hechang Lei , A. Podlesnyak

The coherent spin dynamics of holes are investigated for CsPbBr$_3$ and CsPb(Cl,Br)$_3$ perovskite nanocrystals in a glass matrix using the time-resolved Faraday rotation/ellipticity techniques. In an external magnetic field, pronounced…

The study of how spin interacts with lattice vibrations and relaxes to equilibrium provides unique insights on its chemical environment and the relation between electronic structure and molecular composition. Despite its importance for…

Materials Science · Physics 2022-08-23 Sourav Mondal , Alessandro Lunghi

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

The nuclear spin-lattice relaxation rate (1/T1) at the V sites in CaV2O5 was measured. The result was compared with the calculation for the two-leg ladder with the strong-coupling expansion. We found a good agreement on the temperature and…

Strongly Correlated Electrons · Physics 2009-10-31 Tetsuo Ohama , Masahiko Isobe , Yutaka Ueda

Complex magneto structural behaviour of rare rich intermetallic Tb$_3$Co is reported in this study. Below the 84K (T$_N$), it undergoes a first order magnetic transition 72K confirmed from specific heat and magnetization measurements.…

Materials Science · Physics 2019-08-23 Srikanta Goswami , P. D. Babu , R. Rawat

Modeling blocking temperature in molecular magnets has been a long standing problem in the field of molecular magnetism. We investigate this problem using a kinetic Monte Carlo (kMC) approach on an assembly of 100,000 short molecular…

Strongly Correlated Electrons · Physics 2021-06-23 Sumit Haldar , S. Ramasesha

The local magnetic properties of Yb$^{3+}$ in the layered honeycomb material YbCl$_{3}$ were investigated by electron spin resonance on single crystals. For in-plane and out-of-plane field orientations the $g$-factor shows a clear…

Strongly Correlated Electrons · Physics 2023-08-15 Jörg Sichelschmidt , Ellen Häußler , Ekaterina Vinokurova , M. Baenitz , Thomas Doert

Linearly polarized spectra of far-infrared (IR) transmission in HoMn2O5 multiferroic single crystals have been studied in the frequency range between 8.5 and 105 cm-1 and for temperatures between 5 K and 300 K. Polarization of IR-active…

Strongly Correlated Electrons · Physics 2009-11-13 A. A. Sirenko , S. M. O Malley , K. H. Ahn , S. Park , G. L. Carr , S-W. Cheong

Elastic and inelastic neutron scattering studies reveal details of the antiferromagnetic tansition and intriguing spin-dynamics in the magneto-electric effect single crystal LiMnPO$_4$. The elastic scattering studies confirm the system is…

Strongly Correlated Electrons · Physics 2015-05-13 Jiying Li , Wei Tian , Ying Chen , Jerel L. Zarestky , Jeffrey W. Lynn , David Vaknin

The excitation spectrum of a model magnetic system, LiHoF$_4$, has been studied using neutron spectroscopy as the system is tuned to its quantum critical point by an applied magnetic field. The electronic mode softening expected for a…

Other Condensed Matter · Physics 2009-11-11 H. M. Ronnow , R. Parthasarathy , J. Jensen , G. Aeppli , T. F. Rosenbaum , D. F. McMorrow

Dynamic nuclear polarization (DNP) involves a polarization transfer from unpaired electrons to hyperfine coupled nuclei and can increase the sensitivity of nuclear magnetic resonance (NMR) signals by several orders of magnitude. The…

Chemical Physics · Physics 2024-07-16 Gevin von Witte , Sebastian Kozerke , Matthias Ernst

We examine environmental effects of surrounding nuclear spins on the electron spin relaxation of the N@C60 molecule (which consists of a nitrogen atom at the centre of a fullerene cage). Using dilute solutions of N@C60 in regular and…

Noble-gas spins feature hours long coherence times owing to their great isolation from the environment, and find practical usage in various applications. However, this isolation leads to extremely slow preparation times, relying on weak…

Quantum Physics · Physics 2022-01-05 Anatoli Tsinovoy , Or Katz , Arie Landau , Nimrod Moiseyev

$\gamma$-triclinic and $\alpha$-monoclinic polymorphs of CoV$_{2}$O$_{6}$ are two of the few known transition metal ion based materials that display stepped $1/3$ magnetization plateaus at low temperatures. Neutron diffraction [M. Markkula…

Strongly Correlated Electrons · Physics 2015-12-23 F. Wallington , A. M. Arevalo-Lopez , J. W. Taylor , J. R. Stewart , V. Garcia-Sakai , J. P. Attfield , C. Stock

We report on the magnetic properties of HoCo dimers as a model system for the smallest intermetallic transition metal-lanthanide compound. The dimers are adsorbed on ultrathin MgO(100) films grown on Ag(100). New for $4f$ elements, we…

Atomic and Molecular Clusters · Physics 2018-12-26 A. Singha , F. Donati , F. D. Natterer , C. Wäckerlin , S. Stavrić , Z. S. Popović , {Ž}. {Š}ljivan{č}anin , F. Patthey , H. Brune

In this work we investigated the time behavior of the polarization of bulk 13C nuclei in diamond above the thermal equilibrium. This nonthermal nuclear hyperpolarization is achieved by cross relaxation between two nitrogen related…

Mesoscale and Nanoscale Physics · Physics 2018-08-01 Ralf Wunderlich , Jonas Kohlrautz , Bernd Abel , Jürgen Haase , Jan Meijer
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