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In a toroidal plasma confined by a purely toroidal magnetic field the plasma transport is governed by electrostatic turbulence driven by the flute interchange instability on the low-field side of the torus cross section. In this paper we…

Plasma Physics · Physics 2009-04-21 K. Rypdal , T. Zivkovic , L. Oestvand

We present measurements of magnetic field and frequency dependences of the low temperature (T = 1.8 K) AC-susceptibility, and temperature and field dependences of the longitudinal field positive muon spin relaxation ({\mu}SR) for…

Strongly Correlated Electrons · Physics 2015-06-05 R. C. Johnson , B. Z. Malkin , J. S. Lord , S. R. Giblin , A. Amato , C. Baines , A. Lascialfari , B. Barbara , M. J. Graf

We study the spin fluctuation of the oxygen deficient planes of YBa(2)Cu(3)O(6+x). The Cu-O chains that constitute these planes are described by a model that includes antiferromagnetic interactions between spins and Kondo-like scattering of…

Strongly Correlated Electrons · Physics 2009-10-30 D. N. Aristov , D. R. Grempel

Reduced dimensionality offers a crucial information in deciding the type of the quantum ground state in heavy fermion materials. Here we have examined stoichiometric CeCo$_{2}$Ga$_{8}$ compound, which crystallizes in a quasi-one-dimensional…

Strongly Correlated Electrons · Physics 2020-07-01 A. Bhattacharyya , D. T. Adroja , J. S. Lord , L. Wang , Y. Shi , K. Panda , H. Luo , A. M. Strydom

We study the magnetization and the spin dynamics of the Cr$_7$Ni ring-shaped magnetic cluster. Measurements of the magnetization at high pulsed fields and low temperature are compared to calculations and show that the spin Hamiltonian…

Employing the muon spin relaxation technique we evidence temperature independent magnetic fluctuations persisting down to the lowest temperatures in the samarium-based ($J=5/2$) kagome-lattice Langasite. A detailed bulk-magnetization…

Strongly Correlated Electrons · Physics 2012-11-01 A. Zorko , F. Bert , P. Mendels , A. Potočnik , A. Amato , C. Baines , K. Marty , P. Bordet , P. Lejay , E. Lhotel , V. Simonet , R. Ballou

Spin fluctuation in LiV2O4 is revisited by examining the earlier result of muon spin rotation/ relaxation measurements. Instead of a relationship for the localized electron limit, one for itinerant electron systems between muon…

Strongly Correlated Electrons · Physics 2011-12-19 R. Kadono , A. Koda , W. Higemoto , K. Ohishi , H. Ueda , C. Urano , S. Kondo , M. Nohara , H. Takagi

Zero-field (ZF) muon spin relaxation ($\mu$SR) measurements have revealed static commensurate magnetic order of Fe moments in NdOFeAs below $T_{N} \sim 135$ K, with the ordered moment size nearly equal to that in LaOFeAs, and confirmed…

We study the effects of quantum fluctuations in magnetic properties of quantum frustrated ferromagnets in a magnetic field. It is shown that a non-classical phase or a phase separation appears due to quantum fluctuations below the…

Strongly Correlated Electrons · Physics 2015-03-19 Hiroaki T. Ueda , Tsutomu Momoi

We present comprehensive inelastic neutron spectroscopic maps of the magnetic field-induced disordered phase of the Kitaev quantum spin liquid candidate material $\alpha$-RuCl$_3$. For fields along both in-plane high-symmetry directions we…

We report muon-spin rotation, heat capacity, magnetization, and ac magnetic susceptibility measurements of the layered spin-1/2 antiferromagnet NaNiO2. These show the onset of long-range magnetic order below T_N = 19.5K. Rapid muon…

Strongly Correlated Electrons · Physics 2010-07-08 P. J. Baker , T. Lancaster , S. J. Blundell , M. L. Brooks , W. Hayes , D. Prabhakaran , F. L. Pratt

Measurements of the static magnetization, susceptibility and ESR of Gd spin probes have been performed to study the properties of antiferromagnetically ordered La_{2-x-y}Eu_ySr_xCuO_4 (x less or equal 0.02) with the low temperature…

Superconductivity · Physics 2009-10-31 V. Kataev , A. Validov , M. Huecker , H. Berg , B. Buechner

This short review surveys phenomena observed when a magnetic field is applied to a system of localised spins on a lattice. Its focus is on frustrated magnets in dimension $d \geq 2$. The interplay of field and entropy is illustrated in the…

Strongly Correlated Electrons · Physics 2010-04-14 R. Moessner

Spin fluctuations are an important issue for the design and operation of future spintronic devices. Femtosecond noise correlation spectroscopy (FemNoC) was recently applied to detect ultrafast magnetization fluctuations. FemNoC gives direct…

In a two-dimensional quantum dot in a GaAs heterostructure, the spin-orbit scattering rate is substantially reduced below the rate in a bulk two-dimensional electron gas [B.I. Halperin et al, Phys. Rev. Lett. 86, 2106 (2001)]. Such a…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 P. W. Brouwer , J. N. H. J. Cremers , B. I. Halperin

Suppression of fluctuations of normally perturbed magnetic fields in dynamo waves and slow dynamos along curved (folded), torsioned (twisted) and non-stretched, diffusive filaments are obtained. This form of fluctuations suppression has…

Astrophysics · Physics 2008-06-24 L. C. Garcia de Andrade

We report on thermodynamic, magnetization, and muon spin relaxation measurements of the strong spin-orbit coupled iridate Ba$_3$IrTi$_2$O$_9$, which constitutes a new frustration motif made up a mixture of edge- and corner-sharing…

Strongly Correlated Electrons · Physics 2017-09-13 W. -J. Lee , S. -H. Do , Sungwon Yoon , S. Lee , Y. S. Choi , D. J. Jang , M. Brando , M. Lee , E. S. Choi , S. Ji , Z. H. Jang , B. J. Suh , K. -Y. Choi

The muon spin relaxation method ({\mu}SR) is a powerful microscopic tool to probe electronic states of materials observing local magnetic field distributions on the muon. It often happens that a distribution of local magnetic fields shows…

DyRu2Si2 is a frustrated magnet to exhibit multiple magnetic phase transition in zero and finite magnetic fields. We investigated and characterized the phase transition between the partially-ordered antiferromagnetic phases at zero field by…

Strongly Correlated Electrons · Physics 2023-08-23 Subaru Yoshimoto , Yoshikazu Tabata , Takeshi Waki , Hiroyuki Nakamura

Magnetization plateaux, visible as anomalies in magnetic susceptibility at low temperatures, are one of the hallmarks of frustrated magnetism. An extremely robust half-magnetization plateau is observed in the spinel oxides CdCr2O4 and…

Strongly Correlated Electrons · Physics 2007-06-06 Nic Shannon , Hiroaki Ueda , Yukitoshi Motome , Karlo Penc , Hiroyuki Shiba , Hidenori Takagi
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