scholarly journals Advanced first-principles theory of superconductivity including both lattice vibrations and spin fluctuations: The case ofFeB4

2018 ◽  
Vol 97 (1) ◽  
Author(s):  
J. Bekaert ◽  
A. Aperis ◽  
B. Partoens ◽  
P. M. Oppeneer ◽  
M. V. Milošević
Keyword(s):  
First Principles ◽  
Spin Fluctuations ◽  
Lattice Vibrations ◽  
Theory Of Superconductivity

scholarly journals Effect of spin fluctuations on superconductivity in V and Nb: A first-principles study

2020 ◽  
Vol 102 (21) ◽  
Author(s):  
Kentaro Tsutsumi ◽  
Yuma Hizume ◽  
Mitsuaki Kawamura ◽  
Ryosuke Akashi ◽  
Shinji Tsuneyuki
Keyword(s):  
First Principles ◽  
Spin Fluctuations ◽  
First Principles Study

First-principles theories for anharmonic lattice vibrations

2010 ◽  
Vol 133 (3) ◽  
pp. 034109 ◽  
Author(s):  
So Hirata ◽  
Murat Keçeli ◽  
Kiyoshi Yagi
Keyword(s):  
First Principles ◽  
Lattice Vibrations ◽  
Anharmonic Lattice

Electronic structure, optical and dielectric properties of BaTiO3/CaTiO3/SrTiO3 ferroelectric superlattices from first-principles calculations

2015 ◽  
Vol 3 (33) ◽  
pp. 8625-8633 ◽  
Author(s):  
Bingcheng Luo ◽  
Xiaohui Wang ◽  
Enke Tian ◽  
Guowu Li ◽  
Longtu Li
Keyword(s):  
Electronic Structure ◽  
Dielectric Properties ◽  
Thermodynamic Properties ◽  
First Principles ◽  
Lattice Vibrations ◽  
First Principles Calculations ◽  
Optical Dielectric

The electronic structure, lattice vibrations, and optical, dielectric and thermodynamic properties of BaTiO3/CaTiO3/SrTiO3 (BT/CT/ST) ferroelectric superlattices are calculated by using first-principles calculations.

scholarly journals Superconducting pairing mediated by spin fluctuations from first principles

2014 ◽  
Vol 90 (21) ◽  
Author(s):  
F. Essenberger ◽  
A. Sanna ◽  
A. Linscheid ◽  
F. Tandetzky ◽  
G. Profeta ◽  
...  
Keyword(s):  
First Principles ◽  
Spin Fluctuations ◽  
Superconducting Pairing

Ultrafast carrier dynamics in BiVO4 thin film photoanode material: interplay between free carriers, trapped carriers and low-frequency lattice vibrations

2016 ◽  
Vol 4 (47) ◽  
pp. 18516-18523 ◽  
Author(s):  
K. T. Butler ◽  
B. J. Dringoli ◽  
L. Zhou ◽  
P. M. Rao ◽  
A. Walsh ◽  
...  
Keyword(s):  
First Principles ◽  
Terahertz Spectroscopy ◽  
Low Frequency ◽  
Carrier Dynamics ◽  
Vibrational Modes ◽  
Lattice Vibrations ◽  
Time Resolved ◽  
Ultrafast Carrier Dynamics ◽  
Free Carriers ◽  
Ultrafast Carrier

We explore ultrafast carrier dynamics and interactions of photoexcited carriers with lattice vibrational modes in BiVO4 using time-resolved terahertz spectroscopy and first-principles phonon spectrum calculations.

OBSERVATION OF SPIN FLUCTUATIONS IN Bi-Sr-Ca-Cu-O SYSTEMS

1989 ◽  
Vol 03 (03) ◽  
pp. 257-262 ◽  
Author(s):  
J.Q. LIU ◽  
S.Y. TIAN ◽  
Y.F. YAN ◽  
Z.X. LIU ◽  
D.W. CHANG ◽  
...  
Keyword(s):  
Copper Oxides ◽  
Spin Fluctuations ◽  
Exchange Constant ◽  
Spin Pair ◽  
Theory Of Superconductivity

Following the observations of spin-pair excitations in La 2 CuO 41 and YBa 2 Cu 3 O 6+δ,2 similar results in Bi-Sr-Ca-Cu-O systems are obtained. The center frequencies of the excitations are about 1900–2300 cm −1, which correspond to the value of the exchange constant J~690–840 cm −1. The extraordinary similarity suggests the same origin of superconductivity of these three kinds of copper oxides superconductors. This means that any theory of superconductivity in copper oxides should account explicitly for these highly energetic spin fluctuations.

Sign in / Sign up

Export Citation Format

Share Document