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We report the results of magnetic susceptibility $\chi$ and $^1$H nuclear magnetic resonance (NMR) measurements on a three-dimensional hyper-honeycomb lattice compound [(C$_2$H$_5$)$_3$NH]$_2$Cu$_2$(C$_2$O$_4$)$_3$ (CCCO). The average value…

Strongly Correlated Electrons · Physics 2022-03-29 Q. -P. Ding , C. Dissanayake , Santanu Pakhira , W. J. Newsome , F. Uribe-Romo , D. C. Johnston , Y. Nakajima , Y. Furukawa

We present a systematic study of spin and lattice dynamics in the quasi-one-dimensional spiral magnet CuBr2, using Raman scattering in conjunction with infrared and neutron spectroscopy. Along with the development of spin correlations upon…

To investigate the static and dynamic magnetic properties on the uranium-based superconductor UTe$_{2}$, we measured the NMR Knight shift $K$ and the nuclear spin-lattice relaxation rate $1/T_{1}$ in $H \parallel a$ by $^{125}$Te-NMR on a…

Thermal conductivity measurements have been performed on the superconducting ferromagnet UCoGe down to very low temperature and under magnetic field. In addition to the electronic quasiparticle thermal conductivity, additional contributions…

Strongly Correlated Electrons · Physics 2014-01-22 Mathieu Taupin , Ludovic Howald , Dai Aoki , Jacques Flouquet , Jean-Pascal Brison

By combining the results of muon spin rotation and inelastic neutron scattering in the heavy fermion compounds Ce1-xLaxAl3 (0.0 <= x <= 0.2), we show that static magnetic correlations are suppressed above a characteristic temperature, T*,…

Strongly Correlated Electrons · Physics 2009-11-07 E. A. Goremychkin , R. Osborn , B. D. Rainford , T. A. Costi , A. P. Murani , C. A. Scott , P. J. C. King

The temperature dependence of the low-energy magnetic excitations in the spin-triplet superconductor UTe$_2$ was measured via inelastic neutron scattering in the normal and superconducting states. The imaginary part of the dynamic…

Neutron scattering is used to characterise the magnetism of the vortices for the optimally doped high-temperature superconductor La(2-x)Sr(x)CuO(4) (x=0.163) in an applied magnetic field. As temperature is reduced, low frequency spin…

Strongly Correlated Electrons · Physics 2016-08-16 B Lake , G Aeppli , KN Clausen , DF McMorrow , K Lefmann , NE Hussey , N Mangkorntong , M Nohara , H Takagi , TE Mason , A Schröder

Calcium ruthenate ($CaRuO_3$) is widely believed to be located close to a quantum critical point due to the strong non-Fermi-liquid behavior expressed in the temperature dependence of electronic transport, specific heat, optical…

Strongly Correlated Electrons · Physics 2018-10-23 I. M. Bradarić , V. M. Matić , I. Savić , Hugo Keller

By means of new muon spin relaxation experiments, we disentangle extrinsic and intrinsic sources of low-temperature bulk magnetism in the candidate topological Kondo insulator (TKI) SmB6. Results on Al-flux grown SmB6 single crystals are…

Strongly Correlated Electrons · Physics 2019-12-13 S. Gheidi , K. Akintola , A. M. Cote , S. R. Dunsiger , C. Broholm , W. T. Fuhrman , S. R. Saha , J. Paglione , J. E. Sonier

A detailed zero and transverse field (ZF&TF) muon spin rotation (muSR) investigation of magnetism and the magneto-electric coupling in Cu2OSeO3 is reported. An internal magnetic field B_int(T=0) = 85.37(25) mT was found, in agreement with a…

Strongly Correlated Electrons · Physics 2015-05-28 A. Maisuradze , Z. Guguchia , B. Graneli , H. M. Ronnow , H. Berger , H. Keller

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

Frustration-induced strong quantum fluctuations accompanied by spin-orbit coupling and crystal electric field can give rise to rich and diverse magnetic phenomena associated with unconventional low-energy excitations in rare-earth based…

Strongly Correlated Electrons · Physics 2024-02-13 J. Khatua , S. Bhattacharya , A. M. Strydom , A. Zorko , J. S. Lord , A. Ozarowski , E. Kermarrec , P. Khuntia

$^{125}$Te NMR experiments in field ($H$) applied along the easy magnetization axis (the $a$-axis) revealed slow electronic dynamics developing in the paramagnetic state of UTe$_2$. The observed slow fluctuations are concerned with a…

The magnetic properties of polycrystaline La0.5Ba0.5CoO2.5+d (d = 0.44 and 0.485) where investigated using muon spin relaxation and bulk magnetization experiments. Below a Curie temperature of T_C = 160 K and 180 K, respectively, a magnetic…

Strongly Correlated Electrons · Physics 2011-11-23 M. Stingaciu , H. Luetkens , Y. G. Pashkevich , E. Pomjakushina , K. Conder , H. -H. Klauss

Inelastic neutron scattering is used to characterize spin fluctuations in the $d$-electron heavy fermion spinel $\rm LiV_2O_4$. The spin relaxation rate, $\Gamma_Q$, for $Q=0.6$ \AA$^{-1}$ is 1.5(1) meV at low temperatures and increases…

Strongly Correlated Electrons · Physics 2009-11-07 S. -H. Lee , Y. Qiu , C. Broholm , Y. Ueda , J. J. Rush

We elucidate the microscopic mechanism that causes a suppression of ferroelectricity and an enhancement of octahedral rotations in EuTiO3 from first principles. We find that the hybridization of the rare-earth Eu 4f states with the B-site…

Materials Science · Physics 2013-09-06 Turan Birol , Craig J. Fennie

A peak anomaly is observed in the magnetic susceptibility as a function of temperature in solid H2O near Tp=60 K. At external magnetic fields below 2 kOe, Tp becomes positive in the temperature range between 45 and 66 K. The magnetic field…

Chemical Physics · Physics 2016-05-12 Fei Yen , Tian Gao , Yongsheng Liu , Adam Berlie

We have measured temperature dependence of low-frequency Raman spectra in CuGeO$_3$, and have observed the quasi-elastic scattering in the $(c,c)$ polarization above the spin-Peierls transition temperature. We attribute it to the…

The mixed rare-earth orthochromite Nd$_{0.5}$Dy$_{0.5}$CrO$_{3}$ has a N\'eel temperature ($T_\mathrm{{N}}$) of ${\sim}$ 175\,K, resulting in the G-type antiferromagnetic ordering of Cr$^{3+}$ spins. The inverse susceptibility shows a…

Using field effect devices with side gates, we modulate the 2 dimensional electron gas hosted at the LaAlO$_3$/SrTiO$_3$ interface to study the temperature and doping evolution of the magnetotransport. The analysis of the data reveals…

Mesoscale and Nanoscale Physics · Physics 2015-03-20 D. Stornaiuolo , S. Gariglio , A. Fête , M. Gabay , D. Li , D. Massarotti , J. -M. Triscone