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Using a wire heater to ignite magnetic avalanches in fixed magnetic field applied along the easy axis of single crystals of the molecular magnet Mn$_{12}$-acetate, we report fast local measurements of the temperature and time-resolved…

Mesoscale and Nanoscale Physics · Physics 2007-09-10 S. McHugh , R. Jaafar , M. P. Sarachik , Y. Myasoedov , A. Finkler , H. Shtrikman , E. Zeldov , R. Bagai , G. Christou

We have used a realistic nuclear potential, AV18, and a many body technique, the lowest order constraint variational (LOCV) approach, to calculate the properties of hot magnetized nuclear matter. By investigating the free energy, spin…

Nuclear Theory · Physics 2017-03-02 Z. Rezaei , G. H. Bordbar

Here, we propose a novel approach to experimentally and theoretically study the properties of QCD matter under new extreme conditions, namely having an initial temperature over 300~MeV and baryonic charge density over three times the values…

The behaviour of superconducting junctions of SNINS-type (where S is superconductor, N is normal metal, I is insulator) with anharmonic current-phase relations in the external magnetic field near the critical temperature was investigated.…

Superconductivity · Physics 2018-12-21 O. Yu. Pastukh , V. E. Sakhnyuk , A. V. Svidzinsky

The different magnetic phases of the intermetallic compound Nd$_5$Ge$_3$ are studied in terms of the specific heat, in a broad range of temperatures (350~mK--140~K) and magnetic fields (up to 40 kOe). The expected $T^{3}$ and $T^{3/2}$…

Strongly Correlated Electrons · Physics 2015-04-17 Diego Villuendas Pellicero , Joan Manel Hernàndez Ferràs , Takanori Tsutaoka

Structural, thermal, resistive and magnetic properties of melt quenched Bi 0.88 Sb 0.12 alloys are reported. The samples are heated at three different temperatures, followed by rapid quenching in liquid nitrogen. Large temperature…

Materials Science · Physics 2015-12-21 K. Malik , Diptasikha Das , S. K. Neogi , A. K. Deb , Arup Dasgupta , S. Bandyopadhyay , Aritra Banerjee

Understanding the thermal behaviour of superconducting accelerator magnets is essential to ensure their stable and reliable operation. This work presents an extension of the Finite Element Quench Simulator (FiQuS) Multipole module to…

We study thermal structure and evolution of magnetars as cooling neutron stars with a phenomenological heat source in a spherical internal layer. We explore the location of this layer as well as the heating rate that could explain high…

In order to test the recently proposed connection between the neutron resonance and the specific heat anomaly in cuprates, the experimental specific heat data on $YBa_2Cu_3O_{6.93}$ and a theoretical estimate of the single particle…

Superconductivity · Physics 2007-05-23 Boldizsar Janko

Large magnetocaloric effect has been observed in Mn3O4 around its ferrimagnetic transition at TN = 42.75 K. Field-induced isothermal entropy changes (\DeltaS) were derived from both magnetic and calorimetric techniques. The maximum…

Materials Science · Physics 2011-03-04 S. Thota , F. Guillou , V. Hardy , A. Wahl , W. Prellier , J. Kumar

We examine to what extent the inferred surface temperature of magnetars in quiescence can constrain the presence of a superfluid in the neutron star core and the role of magnetic field decay in the core. By performing detailed simulations…

High Energy Astrophysical Phenomena · Physics 2012-08-27 Wynn C. G. Ho , Kostas Glampedakis , Nils Andersson

Within the framework of the National Special Project for Magnetic Confined Nuclear Fusion Energy of China, the design of a superconducting magnet project as a test facility of the Nb3Sn coil or NbTi coil for the Chinese Fusion Engineering…

Accelerator Physics · Physics 2015-12-04 Yong Ren , Xiang Gao

We show that observations of the core temperature of transiently-accreting neutron stars combined with observations of an accretion outburst give a lower limit to the neutron star core heat capacity. For the neutron stars in the low mass…

High Energy Astrophysical Phenomena · Physics 2017-03-01 Andrew Cumming , Edward F. Brown , Farrukh J. Fattoyev , C. J. Horowitz , Dany Page , Sanjay Reddy

The melting of the magnetic vortex lattice has been observed in high-Tc superconductors in many experiments by different groups and is regarded as confirmed. To date, only one group claims to have observed the vortex-lattice melting in the…

Superconductivity · Physics 2012-05-22 M. Reibelt , N. Toyota

We calculate the magnetisation relaxation in the short-time regime for an ensemble of nanomagnets in the presence of a low-frequency external AC biasing field, at temperatures lower than the magnetic anisotropy energy of the individual…

Condensed Matter · Physics 2007-05-23 G. Rose , P. C. E. Stamp

The combined effect of both nonmagnetic and magnetic impurities on the superconducting transition temperature is studied theoretically within the BCS model. An expression for the critical temperature as a function of potential and spin-flip…

Superconductivity · Physics 2009-10-31 L. A. Openov

This paper investigates the impact of an applied magnetic field on the yield and hot-spot temperature of inertial confinement fusion implosions. A scaling of temperature amplification due to magnetization is shown to be in agreement with…

In this paper we show that for a non-ideal Bose gas there exists an upper limit on the transition temperature above which Bose-Einstein condensation cannot occur regardless of the pressure applied. Such upper limits for some realistic Bose…

Statistical Mechanics · Physics 2009-11-13 Wu-Sheng Dai , Mi Xie

Recent materials research has advanced the maximum ferromagnetic transition temperature in semiconductors containing magnetic elements toward room temperature. Reaching this goal would make information technology applications of these…

Materials Science · Physics 2009-11-07 T. Jungwirth , Jairo Sinova , J. Kučera , A. H. MacDonald

We discuss constraints that the observed brightness temperatures impose on coherent processes in pulsars and Fast Radio Bursts (FRBs), and in particular on the hypothesis of coherent curvature emission by bunches. We estimate the peak…

High Energy Astrophysical Phenomena · Physics 2021-09-08 Maxim Lyutikov