scholarly journals DNS: Diffuse scattering neutron time-of-flight spectrometer

2015 ◽  
Vol 1 ◽  
Author(s):  
Yixi Su ◽  
Kirill Nemkovskiy ◽  
Sultan Demirdiş
Keyword(s):  
Diffuse Scattering ◽  
Strongly Correlated Electrons ◽  
Functional Materials ◽  
Strongly Correlated ◽  
Soft Condensed Matter ◽  
Neutron Time ◽  
Polarisation Analysis ◽  
Compact Design ◽  
Double Focusing ◽  
Frustrated Spin

DNS is a versatile diffuse scattering instrument with polarisation analysis operated by the Jülich Centre for Neutron Science (JCNS), Forschungszentrum Jülich GmbH, outstation at the Heinz Maier-Leibnitz Zentrum (MLZ). Compact design, a large double-focusing PG monochromator and a highly efficient supermirror-based polarizer provide a polarized neutron flux of about 10<sup>7</sup> n cm<sup>-2</sup> s<sup>-1</sup>. DNS is used for the studies of highly frustrated spin systems, strongly correlated electrons, emergent functional materials and soft condensed matter.

scholarly journals Charge transport through extended molecular wires with strongly correlated electrons

2021 ◽  
Author(s):  
James O. Thomas ◽  
Jakub K. Sowa ◽  
Bart Limburg ◽  
Xinya Bian ◽  
Charalambos Evangeli ◽  
...  
Keyword(s):  
Electron Transport ◽  
Charge Transport ◽  
Experimental Studies ◽  
Strongly Correlated Electrons ◽  
Molecular Wires ◽  
Correlated Electrons ◽  
Strongly Correlated

Experimental studies of electron transport through an edge-fused porphyrin oligomer in a graphene junction are interpreted within a Hubbard dimer framework.

scholarly journals Ferromagnetism out of charge fluctuation of strongly correlated electrons in κ-(BEDT-TTF)2Hg(SCN)2Br

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Minoru Yamashita ◽  
Shiori Sugiura ◽  
Akira Ueda ◽  
Shun Dekura ◽  
Taichi Terashima ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Strongly Correlated Electrons ◽  
Charge Order ◽  
Charge Fluctuation ◽  
Spin Moment ◽  
Strongly Correlated ◽  
Weiss Temperature ◽  
Torque Measurements ◽  
Spin Singlet ◽  
Insulating Phase

AbstractWe perform magnetic susceptibility and magnetic torque measurements on the organic κ-(BEDT-TTF)2Hg(SCN)2Br, which is recently suggested to host an exotic quantum dipole-liquid in its low-temperature insulating phase. Below the metal-insulator (MI) transition temperature, the magnetic susceptibility follows a Curie–Weiss law with a positive Curie–Weiss temperature, and a particular $$M\propto \sqrt{H}$$ M ∝ H curve is observed. The emergent ferromagnetically interacting spins amount to about 1/6 of the full spin moment of localized charges. Taking account of the possible inhomogeneous quasi-charge-order that forms a dipole-liquid, we construct a model of antiferromagnetically interacting spin chains in two adjacent charge-ordered domains, which are coupled via fluctuating charges on a Mott-dimer at the boundary. We find that the charge fluctuations can draw a weak ferromagnetic moment out of the spin singlet domains.

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