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We investigate the specific heat, $c$, near an Ising nematic quantum critical point (QCP), using sign problem-free quantum Monte Carlo simulations. Cooling towards the QCP, we find a broad regime of temperature where $c/T$ is close to the…

Strongly Correlated Electrons · Physics 2021-07-16 Ori Grossman , Johannes S. Hofmann , Tobias Holder , Erez Berg

Superconductivity is observed with critical temperatures near 9K in the tetragonal compound Mo5PB2. This material adopts the Cr5B3 structure type common to supercondcuting Nb5Si3-xBx, Mo5SiB2, and W5SiB2, which have critical temperatures of…

Superconductivity · Physics 2016-03-10 Michael A. McGuire , David S. Parker

The critical temperature (${T}_\text{c}$) of superconductors varies a lot. The factors governing the ${T}_\text{c}$ may hold key clues to understand the nature of the superconductivity. Thereby, ${T}_\text{c}$-involved correlations, such as…

Superconductivity · Physics 2018-12-17 Yang Liu , Ning Chen , Yang Li

We present a new technique for measuring the critical temperature Tc in the high pressure, high Tc electron-phonon-driven superconducting hydrides. This technique does not require connecting leads to the sample. In the multiphonon region of…

Superconductivity · Physics 2018-08-01 J. P. Carbotte , E. J. Nicol , T. Timusk

X-ray and neutron powder diffraction data as a function of temperature are analyzed for the colossal dielectric constant material CaCu3Ti4O12. The local structure is studied using atomic pair distribution function analysis. No evidence is…

Materials Science · Physics 2009-11-10 E. S. Bozin , V. Petkov , P. W. Barnes , P. M. Woodward , T. Vogt , S. D. Mahanti , S. J. L. Billinge

Attempts to understand zero temperature phase transitions have forced physicists to consider a regime where the standard paradigms of condensed matter physics break down [1-4]. These quantum critical systems lack a simple description in…

Quantum Gases · Physics 2012-07-04 Kaden R. A. Hazzard , Erich J. Mueller

A phenomenological criterion for the superfluid transition is proposed, which is similar to the Lindemann criterion for the crystal melting. Then we derive a new formula for the critical temperature, relating $T_{\lambda}$ to the mean…

Statistical Mechanics · Physics 2009-10-31 Sergey M. Apenko

Statistical uncertainties in determining the temperatures of hot (0.5 keV to 10 keV) coronal plasmas are investigated. The statistical precision of various spectral temperature diagnostics is established by analyzing synthetic ASCA…

Astrophysics · Physics 2009-10-22 Douglas A. Swartz , S. L. O'Dell , M. E. Sulkanen , A. F. Tennant

Using the strong temperature dependent resistance of a normal metal wire in proximity to a superconductor, we have been able to measure the local temperature of electrons heated by flowing a dc current in a metallic wire to within a few…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 J. Aumentado , J. Eom , V. Chandrasekhar , P. M. Baldo , L. E. Rehn

Predicting high temperature superconductors has long been a great challenge. A major difficulty is how to predict the transition temperature Tc of superconductors. Recently, progress in material informatics has led to a number of machine…

Superconductivity · Physics 2023-11-14 Liang Gu , Yang Liu , Pin Chen , Haiyou Huang , Ning Chen , Yang Li , Yutong Lu , Yanjing Su

A numerical method is developed to calculate the transition temperature of double or multi-layers consisting of films of super- and normal conductors. The approach is based on a dynamic interpretation of Gorkov's linear gap equation and is…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Gerd Bergmann

Finite-temperature calculations are relevant for rationalizing material properties yet they are computationally expensive because large system sizes or long simulation times are typically required. Circumventing the need for performing many…

The superconducting state in vanadium characterizes with the critical temperature ($T_{c}$) equal to $5.3$~K. The Coulomb pseudopotential, calculated with the help of the Eliashberg equations, possesses anomalously high value…

Superconductivity · Physics 2017-07-27 E. A. Drzazga , I. A. Domagalska , M. W. Jarosik , R. Szczȩśniak , J. K. Kalaga

On the basis of the model that was successfully applied to KC8, RbC8, and CsC8 in 1982, we have calculated the superconducting transition temperature Tc for CaC6 and YbC6 to find that the same model reproduces the observed Tc in those…

Superconductivity · Physics 2016-01-13 Yasutami Takada

Recent research on compressed binary hydrides have unveiled the potential for achieving superconductivity at near-room-temperature. Nevertheless, the available decision-making procedures standing behind the selection of constituent elements…

Superconductivity · Physics 2024-09-25 Izabela A. Wrona , Pawel Niegodajew , Artur P. Durajski

We have found a simple criterion which allows for the straightforward determination of the order-disorder critical temperatures. The method reproduces exactly results known for the two dimensional Ising, Potts and $Z(N<5)$ models. It also…

High Energy Physics - Lattice · Physics 2009-10-22 J. Wosiek

We survey the landscape of binary hydrides across the entire periodic table from 10 to 500 GPa using a crystal structure prediction method. Building a critical temperature ($T_c$) model, with inputs arising from density of states…

Superconductivity · Physics 2021-08-11 Alice M. Shipley , Michael J. Hutcheon , Richard J. Needs , Chris J. Pickard

A commercially available calorimeter has been used to investigate the specific heat of a high-quality \kn\ single crystal. The addenda heat capacity of the calorimeter is determined in the temperature range $0.02 \, \mathrm{K} \leq T \leq…

We present a model which deepens into the role that normal scattering has on the thermal conductivity in semiconductor bulk, micro and nanoscale samples. Thermal conductivity as a function of the temperature undergoes a smooth transition…

Mesoscale and Nanoscale Physics · Physics 2015-06-17 C. de Tomas , A. Cantarero , A. F. Lopeandia , F. X. Alvarez

The thermodynamic properties of the superconducting state induced in metallic molecular hydrogen under the influence of pressure 347 GPa were determined. In particular, it has been shown that the critical temperature ($T_{C}$) changes in…

Superconductivity · Physics 2012-04-24 R. Szczęśniak , M. W. Jarosik