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We have performed bulk measurements such as dc magnetic susceptibility, electrical resistivity and heat capacity on the pseudo-ternary alloys Lu$_5$Ir$_4$(Si$_{1-x}$Ge$_x$)$_{10}$ to study the interplay and competition between…

强关联电子 · 物理学 2009-11-11 Yogesh Singh , R. Nirmala , S. Ramakrishnan , S. K. Malik

The data of temperature dependent superfluid density $n_s(T)$ in Li$_2$Pd$_3$B and Li$_2$Pt$_3$B [Yuan {\it et al.}, \phrl97, 017006 (2006)] show that a sudden change of the slope of $n_s (T)$ occur at slightly lower than the critical…

超导电性 · 物理学 2009-11-13 Soumya P. Mukherjee , Sudhansu S. Mandal

We compute the quantum string entropy S_s(m, H) from the microscopic string density of states rho_s (m,H) of mass m in de Sitter space-time. We find for high m, a {\bf new} phase transition at the critical string temperature T_s= (1/2 pi…

高能物理 - 理论 · 物理学 2008-11-26 A. Bouchareb , M. Ramon Medrano , N. G. Sanchez

The subtle interplay of band topology and symmetry broken phase, induced by electron correlations, has immense contemporary relevance and potentially offers novel physical insights. Here, we demonstrate charge density wave (CDW) in bulk…

介观与纳米尺度物理 · 物理学 2022-12-13 Abhishek Juyal , Vinod Kumar Dwivedi , Sonu Verma , Shibabrata Nandi , Amit Agarwal , Soumik Mukhopadhyay

We report the discovery of structural phase transitions and superconductivity in the full Heusler compounds $X$Pd$_2$Sn ($X$ = Ti, Zr, Hf), by means of electrical transport, magnetic susceptibility, specific heat and x-ray diffraction…

超导电性 · 物理学 2023-03-07 Hang Su , Feng Du , Rui Li , Shuaishuai Luo , Yuxuan Chen , Jiyong Liu , Ye Chen , Chao Cao , Michael Smidman , Huiqiu Yuan

We use computationally simple neutral pseudo-atom (`average atom') one-center density functional theory (DFT) and standard N-center DFT-Molecular Dynamics simulations to elucidate liquid-liquid phase transitions (LPTs) in supercooled liquid…

材料科学 · 物理学 2020-07-21 M. W. C. Dharma-wardana , Dennis D. Klug , Richard C. Remsing

The compounds Lu$_5$Ir$_4$Si$_{10}$ and Lu$_5$Ir$_4$Ge$_{10}$ crystallize in the tetragonal Sc$_5$Co$_4$Si$_{10}$ type structure. Lu$_5$Ir$_4$Si$_{10}$ is known to superconduct below 3.9 K and it also exhibits a strongly coupled charge…

强关联电子 · 物理学 2007-05-23 Yogesh Singh , S. Ramakrishnan

The thermodynamic behavior of a decaying vacuum cosmology describing the entire cosmological history evolving between two extreme (early and late time) de Sitter eras is investigated. The thermal evolution from the early de Sitter to the…

广义相对论与量子宇宙学 · 物理学 2015-06-23 J. A. S. Lima , S. Basilakos , Joan Solà

The interaction of many-body systems with intense light pulses may lead to novel emergent phenomena far from equilibrium. Recent discoveries, such as the optical enhancement of the critical temperature in certain superconductors and the…

We define and compute the (analogue) shear viscosity to entropy density ratio $\tilde\eta/s$ for the QFTs dual to spherical AdS black holes both in Einstein and Gauss-Bonnet gravity in five spacetime dimensions. Although in this case, owing…

高能物理 - 理论 · 物理学 2018-01-09 Mariano Cadoni , Edgardo Franzin , Matteo Tuveri

We investigate the behavior of amorphous silicon under hydrostatic compression using molecular simulations. During compression, amorphous silicon undergoes a discontinuous nonequilibrium transition from a low-density to a high-density…

软凝聚态物质 · 物理学 2023-05-31 Jan Grießer , Gianpietro Moras , Lars Pastewka

Due to a rapid change of the entropy density $s(T)$ across the critical temperature $T_c$ of the QCD phase transition, the pressure $P(T)$ and the energy density $e(T)$ above $T_c$ generally deviate from their Stefan-Boltzmann values. We…

高能物理 - 唯象学 · 物理学 2009-10-28 M. Asakawa , T. Hatsuda

The focus of this paper is the vanishing of the thermal expansion in certain diamond-like semiconductors. In silicon becomes zero at T = 122. K. In germanium the situation is less clear. Previous investigations show that in natural…

材料科学 · 物理学 2009-11-24 R. Colella , B. Reinhart , E. Alp , E. E. Haller

The electroweak (EW) phase transition in the early Universe might be supercooled due to the presence of the classical scale invariance involving Beyond the Standard Model (BSM) sectors and the supercooling could persist down till a later…

高能物理 - 唯象学 · 物理学 2024-09-24 Yuepeng Guan , Shinya Matsuzaki

Liquid-liquid and liquid-vapor coexistence regions of various water models were determined by MC simulations of isotherms of density fluctuation restricted systems and by Gibbs ensemble MC simulations. All studied water models show multiple…

统计力学 · 物理学 2009-11-11 Ivan Brovchenko , Alfons Geiger , Alla Oleinikova

This paper investigates thermodynamics, quasi-normal modes, thermal fluctuations and phase transitions of Reissner-Nordstr\"om black hole with the effects of non-linear electrodynamics. We first compute the expressions for Hawking…

广义相对论与量子宇宙学 · 物理学 2022-05-10 M. Sharif , Amjad Khan

Based on the linear mixing approach, we calculate the latent heat for crystallizing fully-ionized $^{12}$C/$^{16}$O and $^{16}$O/$^{20}$Ne mixtures in white dwarf (WD) cores for two different parametrizations of the corrections to the…

太阳与恒星天体物理 · 物理学 2023-03-29 D. A. Baiko

As superconductors are thinned down to the 2D limit, their critical temperature $T_c$ typically decreases. Here we report the opposite behavior, a substantial enhancement of $T_c$ with decreasing thickness, in 2D crystalline superconductor…

Non-gravitational processes, such as feedback from galaxies and their active nuclei, are believed to have injected excess entropy into the intracluster gas, and therefore to have modified the density profiles in galaxy clusters during their…

天体物理学 · 物理学 2009-11-13 Wenjuan Fang , Zoltan Haiman

The hunt for high temperature superfluidity has received new impetus from the discovery of atomically thin stable materials. Electron-hole superfluidity in coupled MoSe2-WSe2 monolayers is investigated using a mean-field multiband model…