scholarly journals Superconductivity by hidden spin fluctuations in electron-doped iron selenide

2021 ◽  
Vol 103 (18) ◽  
Author(s):  
J. P. Rodriguez
Keyword(s):  
Spin Fluctuations ◽  
Iron Selenide

scholarly journals Conformity of spin fluctuations in alkali-metal iron selenide superconductors inferred from the observation of a magnetic resonant mode in K x Fe 2−y Se 2

2012 ◽  
Vol 99 (6) ◽  
pp. 67004 ◽  
Author(s):  
G. Friemel ◽  
W. P. Liu ◽  
E. A. Goremychkin ◽  
Y. Liu ◽  
J. T. Park ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Resonant Mode ◽  
Spin Fluctuations ◽  
Iron Selenide

KONDO EFFECT AND LOCALIZED SPIN FLUCTUATIONS IN THE Zn-TRANSITION METAL SYSTEM

1971 ◽  
Vol 32 (C1) ◽  
pp. C1-221-C1-223
Author(s):  
P. J. FORD ◽  
C. RIZZUTO ◽  
E. SALAMONI ◽  
P. ZANI
Keyword(s):  
Transition Metal ◽  
Kondo Effect ◽  
Spin Fluctuations ◽  
Metal System ◽  
Transition Metal System

TRANSVERSE SPIN FLUCTUATIONS IN γ - Mn (37 % Fe) ALLOY

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-183-C8-184 ◽  
Author(s):  
J. J. Milczarek ◽  
K. Mikke ◽  
E. Jaworska
Keyword(s):  
Spin Fluctuations ◽  
Transverse Spin

scholarly journals Evolution of spin excitations from bulk to monolayer FeSe

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jonathan Pelliciari ◽  
Seher Karakuzu ◽  
Qi Song ◽  
Riccardo Arpaia ◽  
Abhishek Nag ◽  
...  
Keyword(s):  
Quantum Monte Carlo ◽  
Spin Dynamics ◽  
Spin Fluctuations ◽  
Superconducting Transition ◽  
Pairing Mechanism ◽  
Range Magnetic Order ◽  
X Ray Scattering ◽  
Spin Excitations ◽  
Order Of Magnitude ◽  
Long Range Magnetic Order

AbstractIn ultrathin films of FeSe grown on SrTiO3 (FeSe/STO), the superconducting transition temperature Tc is increased by almost an order of magnitude, raising questions on the pairing mechanism. As in other superconductors, antiferromagnetic spin fluctuations have been proposed to mediate SC making it essential to study the evolution of the spin dynamics of FeSe from the bulk to the ultrathin limit. Here, we investigate the spin excitations in bulk and monolayer FeSe/STO using resonant inelastic x-ray scattering (RIXS) and quantum Monte Carlo (QMC) calculations. Despite the absence of long-range magnetic order, bulk FeSe displays dispersive magnetic excitations reminiscent of other Fe-pnictides. Conversely, the spin excitations in FeSe/STO are gapped, dispersionless, and significantly hardened relative to its bulk counterpart. By comparing our RIXS results with simulations of a bilayer Hubbard model, we connect the evolution of the spin excitations to the Fermiology of the two systems revealing a remarkable reconfiguration of spin excitations in FeSe/STO, essential to understand the role of spin fluctuations in the pairing mechanism.

scholarly journals Neutron scattering studies on spin fluctuations in Sr2RuO4

2021 ◽  
Vol 103 (10) ◽  
Author(s):  
K. Jenni ◽  
S. Kunkemöller ◽  
P. Steffens ◽  
Y. Sidis ◽  
R. Bewley ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Spin Fluctuations

Ultrafast and Durable Li/Na storage by an Iron Selenide Anode Using an Elastic Hierarchical Structure

2021 ◽  
Author(s):  
Peng Jing ◽  
Qiong Wang ◽  
Chunxiang Xian ◽  
Liyu Du ◽  
Yin Zhang ◽  
...  
Keyword(s):  
Hierarchical Structure ◽  
Carbon Matrix ◽  
Iron Selenide ◽  
Hierarchical Framework ◽  
Unique Structure ◽  
Graphene Coating ◽  
Elastic Characteristics

FeSe nanoparticles were encapsulated into polycystic carbon matrix (FeSe/C) followed by graphene coating (GF@FeSe/C) via a facile strategy, constructing a hierarchical framework with porous and elastic characteristics. This unique structure...

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