scholarly journals Existence of Long-Range Magnetic Order in the Ground State of Two-Dimensional Spin-1/2 Heisenberg Antiferromagnets

2007 ◽  
Vol 117 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Martin Indergand ◽  
Manfred Sigrist
Keyword(s):  
Long Range ◽  
Ground State ◽  
Magnetic Order ◽  
Two Dimensional ◽  
Range Magnetic Order ◽  
Heisenberg Antiferromagnets ◽  
Long Range Magnetic Order

scholarly journals From magnetic order to quantum disorder in the Zn-barlowite series of S = 1/2 kagomé antiferromagnets

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Katherine Tustain ◽  
Brendan Ward-O’Brien ◽  
Fabrice Bert ◽  
Tianheng Han ◽  
Hubertus Luetkens ◽  
...  
Keyword(s):  
Long Range ◽  
Ground State ◽  
Density Functional ◽  
Magnetic Order ◽  
Parent Compound ◽  
Quantum Spin ◽  
Spin Liquid ◽  
Range Magnetic Order ◽  
Quantum Spin Liquid ◽  
Long Range Magnetic Order

Abstract We report a comprehensive muon spectroscopy study of the Zn-barlowite series of $$S=\frac{1}{2}$$ S = 1 2 kagomé antiferromagnets, ZnxCu4−x(OH)6FBr, for x = 0.00 to 0.99(1). By combining muon spin relaxation and rotation measurements with state-of-the-art density-functional theory muon-site calculations, we observe the formation of both μ–F and μ–OH complexes in Zn-barlowite. From these stopping sites, implanted muon spins reveal the suppression of long-range magnetic order into a possible quantum spin liquid state upon the increasing concentration of Zn-substitution. In the parent compound (x = 0), static long-range magnetic order below TN = 15 K manifests itself in the form of spontaneous oscillations in the time-dependent muon asymmetry signal consistent with the dipolar fields expected from the calculated muon stopping sites and the previously determined magnetic structure of barlowite. Meanwhile, in the x = 1.0 end-member of the series—in which antiferromagnetic kagomé layers of Cu2+$$S=\frac{1}{2}$$ S = 1 2 moments are decoupled by diamagnetic Zn2+ ions—we observe that dynamic magnetic moment fluctuations persist down to at least 50 mK, indicative of a quantum disordered ground state. We demonstrate that this crossover from a static to dynamic magnetic ground state occurs for compositions of Zn-barlowite with x > 0.5, which bears resemblance to the dynamical behaviour of the widely studied Zn-paratacamite series that contains the quantum spin liquid candidate herbertsmithite.

Long-Range Magnetic Order in Oxide Quantum Wells Hosting Two-Dimensional Electron Gases

2020 ◽  
Vol 12 (25) ◽  
pp. 28775-28782
Author(s):  
Jine Zhang ◽  
Hui Zhang ◽  
Hongrui Zhang ◽  
Yang Ma ◽  
Xiaobing Chen ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Long Range ◽  
Magnetic Order ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Electron Gases ◽  
Range Magnetic Order ◽  
Long Range Magnetic Order

scholarly journals Unconventional Hall effect and its variation with Co-doping in van der Waals Fe3GeTe2

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rajeswari Roy Chowdhury ◽  
Samik DuttaGupta ◽  
Chandan Patra ◽  
Oleg A. Tretiakov ◽  
Sudarshan Sharma ◽  
...  
Keyword(s):  
Hall Effect ◽  
Magnetic Materials ◽  
Long Range ◽  
Magnetic Order ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Spintronic Devices ◽  
Co Doping ◽  
Range Magnetic Order ◽  
Long Range Magnetic Order

AbstractTwo-dimensional (2D) van der Waals (vdW) magnetic materials have attracted a lot of attention owing to the stabilization of long range magnetic order down to atomic dimensions, and the prospect of novel spintronic devices with unique functionalities. The clarification of the magnetoresistive properties and its correlation to the underlying magnetic configurations is essential for 2D vdW-based spintronic devices. Here, the effect of Co-doping on the magnetic and magnetotransport properties of Fe3GeTe2 have been investigated. Magnetotransport measurements reveal an unusual Hall effect behavior whose strength was considerably modified by Co-doping and attributed to arise from the underlying complicated spin textures. The present results provide a clue to tailoring of the underlying interactions necessary for the realization of a variety of unconventional spin textures for 2D vdW FM-based spintronics.

Long-range magnetic order in a GdCu2 cluster with a ground state

1988 ◽  
Vol 66 (1) ◽  
pp. 79-81 ◽  
Author(s):  
R.L. Carlin ◽  
M. Vaziri ◽  
C. Benelli ◽  
D. Gatteschi
Keyword(s):  
Long Range ◽  
Ground State ◽  
Magnetic Order ◽  
Range Magnetic Order ◽  
Long Range Magnetic Order

High-Pressure Ground State ofSmB6: Electronic Conduction and Long Range Magnetic Order

2005 ◽  
Vol 94 (16) ◽  
Author(s):  
A. Barla ◽  
J. Derr ◽  
J. P. Sanchez ◽  
B. Salce ◽  
G. Lapertot ◽  
...  
Keyword(s):  
High Pressure ◽  
Long Range ◽  
Ground State ◽  
Magnetic Order ◽  
Electronic Conduction ◽  
Range Magnetic Order ◽  
Long Range Magnetic Order
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