Journal ArticleDOI
Canonical Entropy and Phase Transition of Rotating Black Hole
TLDR
In this article, the authors derived the canonical entropy, which is the sum of the Bekenstein-Hawking entropy and the correction term of a rotating black hole, and showed that the thermal capacity diverges at the critical point.Abstract:
Recently, the Hawking radiation of a black hole has been studied using the tunnel effect method. The radiation spectrum of a black hole is derived. By discussing the correction to spectrum of the rotating black hole, we obtain the canonical entropy. The derived canonical entropy is equal to the sum of Bekenstein–Hawking entropy and correction term. The correction term near the critical point is different from the one near others. This difference plays an important role in studying the phase transition of the black hole. The black hole thermal capacity diverges at the critical point. However, the canonical entropy is not a complex number at this point. Thus we think that the phase transition created by this critical point is the second order phase transition. The discussed black hole is a five-dimensional Kerr-AdS black hole. We provide a basis for discussing thermodynamic properties of a higher-dimensional rotating black hole.read more
Citations
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Black Hole Explosions
TL;DR: In this article, it was shown that any black hole will create and emit particles such as neutrinos or photons at just the rate that one would expect if the black hole was a body with a temperature of (κ/2π) (ħ/2k) ≈ 10−6 (M/M)K where κ is the surface gravity of the body.
Journal ArticleDOI
Electronic and magnetic phase diagram of β-Fe1.01Se with superconductivity at 36.7 K under pressure
Sergey A. Medvedev,Tyrel M. McQueen,I. A. Troyan,Taras Palasyuk,Mikhail Eremets,Robert J. Cava,S. Shahab Naghavi,Frederick Casper,Vadim Ksenofontov,Gerhard Wortmann,Claudia Felser +10 more
TL;DR: In this article, the magnetic and electronic phase diagram of β-Fe1.01Se has been analyzed and the transition temperature increases from 8.5 to 36.7 K under an applied pressure of 8.9 GPa.
Journal ArticleDOI
Phase diagram and electronic indication of high-temperature superconductivity at 65 K in single-layer FeSe films
Shaolong He,Junfeng He,Wenhao Zhang,Wenhao Zhang,Lin Zhao,Defa Liu,Xu Liu,Daixiang Mou,Yunbo Ou,Qingyan Wang,Qingyan Wang,Zhi Li,Lili Wang,Yingying Peng,Yan Liu,Chaoyu Chen,Li Yu,Guodong Liu,Xiaoli Dong,Jun Zhang,Chuangtian Chen,Zuyan Xu,Xi Chen,Xucun Ma,Qi-Kun Xue,Xingjiang Zhou +25 more
TL;DR: The phase diagram for an FeSe monolayer grown on a SrTiO3 substrate is reported, by tuning the charge carrier concentration over a wide range through an extensive annealing procedure, and strong indications of superconductivity are observed with a transition temperature of 65±5 K.
Journal ArticleDOI
Electronic origin of high-temperature superconductivity in single-layer FeSe superconductor
Defa Liu,Wenhao Zhang,Wenhao Zhang,Daixiang Mou,Junfeng He,Yunbo Ou,Qingyan Wang,Qingyan Wang,Zhi Li,Lili Wang,Lin Zhao,Shaolong He,Yingying Peng,Xu Liu,Chaoyu Chen,Li Yu,Guodong Liu,Xiaoli Dong,Jun Zhang,Chuangtian Chen,Zuyan Xu,Jiangping Hu,Jiangping Hu,Xi Chen,Xucun Ma,Qi-Kun Xue,Xingjiang Zhou +26 more
TL;DR: Investigations of the electronic structure and superconducting gap of the single-layer FeSe superconductor establish a clear case that such a simple electronic structure is compatible with high-T(c) superconductivity in iron-based superconductors.
Journal ArticleDOI
Unconventional s-wave superconductivity in Fe(Se,Te).
TL;DR: In this article, the authors used scanning tunneling microscopy on Fe(Se,Te) single crystals to image the quasi-particle scattering interference patterns in the superconducting state.
References
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Journal ArticleDOI
Particle Creation by Black Holes
TL;DR: In this article, it is shown that quantum mechanical effects cause black holes to create and emit particles as if they were hot bodies with temperature, which leads to a slow decrease in the mass of the black hole and to its eventual disappearance.
Journal ArticleDOI
Black holes and entropy
TL;DR: In this paper, the concept of black-hole entropy was introduced as a measure of information about a black hole interior which is inaccessible to an exterior observer, and it was shown that the entropy is equal to the ratio of the black hole area to the square of the Planck length times a dimensionless constant of order unity.
Journal ArticleDOI
Black hole explosions
TL;DR: In this article, it was shown that any black hole will create and emit particles such as neutrinos or photons at just the rate that one would expect if the black hole was a body with a temperature of (κ/2π) (ħ/2k) ≈ 10−6 (M/M)K where κ is the surface gravity of the body.
Black Hole Explosions
TL;DR: In this article, it was shown that any black hole will create and emit particles such as neutrinos or photons at just the rate that one would expect if the black hole was a body with a temperature of (κ/2π) (ħ/2k) ≈ 10−6 (M/M)K where κ is the surface gravity of the body.
Journal ArticleDOI
Hawking Radiation As Tunneling
TL;DR: A short and direct derivation of Hawking radiation as a tunneling process, based on particles in a dynamical geometry, respects conservation laws, but the exact spectrum is not precisely thermal.