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We present an experimental study of the longitudinal electron-spin relaxation time (T1) of negatively charged nitrogen-vacancy (NV) ensembles in diamond. T1 was studied as a function of temperature from 5 to 475 K and magnetic field from 0…

Materials Science · Physics 2015-06-03 A. Jarmola , V. M. Acosta , K. Jensen , S. Chemerisov , D. Budker

Structural properties, impedance, dielectric and electric modulus spectra have been used to investigate the sintering temperature (Ts) effect on the single phase cubic spinel Ni0.6Zn0.4Fe2O4 (NZFO) ceramics synthesized by standard ceramic…

Materials Science · Physics 2016-10-19 M. A. Ali , M. N. I. Khan , F. -U. -Z. Chowdhury , S. Akhter , M. M. Uddin

We present the results of a study of the vortex lattice (VL) of the nickel chalcogenide superconductor TlNi2Se2, using small angle neutron scattering. This superconductor has the same crystal symmetry as the iron arsenide materials.…

The lattice dynamics of solid 4He has been explored using pulsed NMR methods to study the motion of 3He impurities in the temperature range where experiments have revealed anomalies attributed to superflow or unexpected viscoelastic…

Materials Science · Physics 2015-06-12 S. S. Kim , C. Huan , L. Yin , J. S. Xia , D. Candela , N. S. Sullivan

In this article, we report the temperature dependence of spin-lattice relaxation rates at two Pt sites and one Si site in CePt3Si with a non-centrosymmetric structure center. 1/T1 for both Pt sites between 2 K and 300 K and 1/T1 of Si above…

Superconductivity · Physics 2009-11-10 K. Ueda , K. Hamamoto , T. Kohara , G. Motoyama , Y. Oda

We investigate the electronic structure of tungsten ditelluride (WTe$_2$) flakes with different thicknesses in magneto-transport studies. The temperature-dependent resistance and magnetoresistance (MR) measurements both confirm the breaking…

Materials Science · Physics 2021-10-27 Xurui Zhang , Vivek Kakani , John M. Woods , Judy J. Cha , Xiaoyan Shi

We performed high pressure x-ray diffraction (XRD), Raman, and transport measurements combined with first-principles calculations to investigate the behavior of tin diselenide (SnSe$_2$) under compression. The obtained single-crystal XRD…

The magnetic behavior of the low-dimensional phosphates (Sr,Ba)_2 Cu(PO_4)_2 and BaCuP_2O_7 was investigated by means of magnetic susceptibility and ^{31}P nuclear magnetic resonance (NMR) measurements. We present here the NMR shift K(T),…

Strongly Correlated Electrons · Physics 2009-11-10 R. Nath , A. V. Mahajan , N. Buttgen , C. Kegler , A. Loidl

In this work we report the results of DC susceptibility, AC susceptibility and related technique, resistivity, transverse and longitudinal magnetoresistance and heat capacity on polycrystalline magnetic semimetal CeAlGe. This compound…

Strongly Correlated Electrons · Physics 2020-07-01 Karan Singh , K. Mukherjee

The temperature dependence of electron spin resonance (ESR) was studied in $EuFe_{2-x}Co_{x}As_2 $ (x = 0.0, 0.067, 0.1, 0.2, 0.25, 0.285, 0.35, 0.4 and 0.5). The ESR spectrum of all the samples indicates that the g factor and peak-to-peak…

Superconductivity · Physics 2009-08-04 J. J. Ying , T. Wu , Q. J. Zheng , Y. He , G. Wu , Q. J. Li , Y. J. Yan , Y. L. Xie , R. H. Liu , X. F. Wang , X. H. Chen

A common solution for precise magnetic field sensing is to employ spin-active defects in semiconductors, with the NV center in diamond as prominent example. However, the three-dimensional nature of diamond limits the obtainable proximity of…

To investigate the normal-state magnetic properties of UTe2 under pressure, we perform 125Te nuclear magnetic resonance (NMR) measurements up to 2 GPa. Below 1.2 GPa, the b-axis NMR Knight shift shows a broad maximum at the so-called…

We consider the isotropic $S=1$ Heisenberg chain with a finite Haldane gap $\Delta$ and use state-of-the-art numerical techniques to investigate its dynamical properties at finite temperature, focusing on the nuclear spin-lattice relaxation…

Strongly Correlated Electrons · Physics 2019-09-19 Sylvain Capponi , Maxime Dupont , Anders W. Sandvik , Pinaki Sengupta

Inelastic neutron scattering measurements have been performed on single crystals of the heavy fermion compound Ce$_{0.925}$La$_{0.075}$Ru$_{2}$Si$_{2}$ in broad energy [0.1, 9.5 meV] and temperature [40 mK, 294 K] ranges in order to address…

Strongly Correlated Electrons · Physics 2007-05-23 W. Knafo , S. Raymond , J. Flouquet , B. Fåk , M. A. Adams , P. Haen , F. Lapierre , S. Yates , P. Lejay

We report the first experimental evidence for the intimate connection between superconductivity and antiferromagnetism in Rb0.8Fe2Se2-xTex single crystal under negative chemical pressure by substituting Se with isovalent Te atoms.…

Superconductivity · Physics 2012-05-25 Dachun Gu , Liling Sun , Qi Wu , Chao Zhang , Jing Guo , Peiwen Gao , Yue Wu , Xiaoli Dong , Xi Dai , Zhongxian Zhao

Intrinsic properties of a compound (e.g., electronic structure, crystallographic structure, optical and magnetic properties) define notably its chemical and physical behavior. In the case of nanomaterials, these fundamental properties…

^{139}La NMR measurements of La_{2/3}Ca_{1/3}MnO_3 performed in the paramagnetic state and high magnetic fields are reported. Analysis of the high temperature spectrum measured establishes that the spectrum it is a standard powder pattern…

Strongly Correlated Electrons · Physics 2009-10-31 K. E. Sakaie , C. P. Slichter , P. Lin , M. Jaime , M. B. Salamon

The ultrathin one-dimensional sp3 diamond nanothreads (NTHs), as successfully synthesised recently, have greatly augmented the interests from the carbon community. In principle, there can exist different stable NTH structures. In this work,…

Materials Science · Physics 2018-03-20 Haifei Zhan , Gang Zhang , John M. Bell , Yuantong Gu

We analyze the electron spin relaxation rate $1/T_1$ of individual ion-implanted $^{31}$P donors, in a large set of metal-oxide-semiconductor (MOS) silicon nanoscale devices, with the aim of identifying spin relaxation mechanisms peculiar…

The electronic and superconducting properties associated with the topologically non-trivial bands in Weyl semimetals have recently attracted much attention. We report the microscopic properties of the type-I Weyl semimetal TaAs measured by…

Strongly Correlated Electrons · Physics 2020-06-18 C. G. Wang , Yoshiaki Honjo , L. X. Zhao , G. F. Chen , K. Matano , R. Zhou , Guo-qing Zheng