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Related papers: Single-molecule enhanced spin-flip detection

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Local quantum phase transitions driven by Kondo correlations have been theoretically proposed in several magnetic nanosystems; however, clear experimental signatures are scant. Modeling a nickelocene molecule on a Cu(100) substrate as a…

Strongly Correlated Electrons · Physics 2023-01-20 G. G. Blesio , R. Žitko , L. O. Manuel , A. A. Aligia

Density functional theory and nonequilibrium Green's function calculations have been used to explore spin-resolved transport through the high-spin state of an iron(II)sulfur single molecular magnet. Our results show that this molecule…

Materials Science · Physics 2017-04-25 Sherif Abdulkader Tawfik , Leigh Weston , X. Y. Cui , Simon Ringer , Catherine Stampfl

We address the tunneling conductance and spin inelastic tunneling spectroscopy of localized paramagnetic moments in a superconducting environment, pertaining to recent measurements on Fe-octaethylporphyrin-chloride using superconducting…

Mesoscale and Nanoscale Physics · Physics 2015-05-29 P. Berggren , J. Fransson

DC current induced magnetization reversal and magnetization oscillation was observed in 500 nm large size Co90Fe10/Cu/Ni80Fe20 pillars. A perpendicular external field enhanced the coercive field separation between the reference layer…

Mesoscale and Nanoscale Physics · Physics 2017-04-05 Linqiang Luo , Mehdi Kabir , Nam Dao , Salinporn Kittiwatanakul , Michael Cyberey , Stuart A. Wolf , Mircea Stan , Jiwei Lu

Anisotropic magnetic molecules can be employed to manipulate charge transport in molecular nanojunctions. Charge transport through a molecular orbital connected to two leads and exchange-coupled with a precessing anisotropic molecular spin…

Mesoscale and Nanoscale Physics · Physics 2025-09-09 Milena Filipovic

We demonstrate that ultracold symmetric top molecules loaded into an optical lattice can realize highly tunable and unconventional models of quantum magnetism, such as an XYZ Heisenberg spin model. We show that anisotropic dipole-dipole…

Quantum Gases · Physics 2015-03-20 M. L. Wall , K. Maeda , L. D. Carr

Interest in the magnetism of organic compounds is growing because of new organic magnets, spin-based electronics and the diverse properties of magnetic edge states in graphene nanoribbons. Electron spin resonance spectroscopy combined with…

Mesoscale and Nanoscale Physics · Physics 2025-04-28 Gregory Czap , Christoph Wolf , Jose Reina-Gálvez , Mark H. Sherwood , Christopher P. Lutz

Spin excitations in atomic-scale nanostructures have been investigated with inelastic scanning tunneling spectroscopy, sometimes with conflicting results. In this work we present a theoretical viewpoint on a recent experimental controversy…

Mesoscale and Nanoscale Physics · Physics 2015-11-10 Benedikt Schweflinghaus , Manuel dos Santos Dias , Samir Lounis

In a many-spin approach that takes account of the internal structure, microscopic interactions and single-site anisotropies, we investigate the effect of spin non-collinearities induced by the boundary and surface anisotropy on the…

Statistical Mechanics · Physics 2009-11-11 H. Kachkachi

We report a neutron scattering study of the spin excitation spectrum in the superconducting state of slightly overdoped Bi2Sr2CaCu2O8+d system (Tc=87 K). We focus on the dispersion of the resonance peak in the superconducting state that is…

Superconductivity · Physics 2010-12-02 B. Fauqué , Y. Sidis , L. Capogna , A. Ivanov , K. Hradil , C. Ulrich , A. I. Rykov , B. Keimer , P. Bourges

We have characterized spin-squeezed states produced at a temperature of $26^\circ{\mathrm C}$ on a Nuclear Magnetic Resonance (NMR) quadrupolar system. The implementation is carried out in an ensemble of $^{133}$Cs nuclei with spin $I=7/2$…

Non-collinear two-dimensional triangular lattice antiferromagnets (2D TLAF) are currently an area of very active research due to their unique magnetic properties, which lead to non-trivial quantum effects that experimentally manifest…

Strongly Correlated Electrons · Physics 2018-10-12 J. C. Leiner , Taehun Kim , Kisoo Park , Joosung Oh , T. G. Perring , H. C. Walker , X. Xu , Y. Wang , S. -W. Cheong , Je-Geun Park

We investigate the spectral evolution in different metal phthalocyanine molecules on NbSe$_2$ surface using scanning tunnelling microscopy (STM) as a function of the coupling with the substrate. For manganese phthalocyanine (MnPc), we…

Mesoscale and Nanoscale Physics · Physics 2019-07-15 Shawulienu Kezilebieke , Rok Žitko , Marc Dvorak , Teemu Ojanen , Peter Liljeroth

A functional heterostructure is central to integrated circuitry in quantum photonics, optoelectronics, neuromorphic computing, spintronics, and straintronics. Recently, heterostructures combining 2D magnets and nonmagnetic transition metal…

Strongly Correlated Electrons · Physics 2025-11-20 Swagata Acharya , Dimitar Pashov , Daphne Lubert-Perquel , Mark van Schilfgaarde , Justin C. Johnson

NiCl$_2$-4SC(NH$_2$)$_2$ (DTN) is a quantum S=1 chain system with strong easy-pane anisotropy and a new candidate for the Bose-Einstein condensation of the spin degrees of freedom. ESR studies of magnetic excitations in DTN in fields up to…

Strongly Correlated Electrons · Physics 2012-08-27 S. A. Zvyagin , J. Wosnitza , C. D. Batista , M. Tsukamoto , N. Kawashima , J. Krzystek , V. S. Zapf , M. Jaime , N. F. Oliveira, , A. Paduan-Filho

This article reports the successful synthesis of single crystalline two-dimensional thin flakes of NbSe$_2$. The XRD pattern of the grown crystal ensured its crystallization in a single phase with a hexagonal structure. The EDAX endorsed…

Superconductivity · Physics 2024-06-28 N. K. Karn , M. M. Sharma , I. Felner , V. P. S. Awana

We revisit the pyrochlore spin liquid materials Ce$_2$Sn$_2$O$_7$ and Ce$_2$Zr$_2$O$_7$ by examining the existing experiments. We continue to rely on the special properties of the dipole-octupole nature of the Ce$^{3+}$ moment. The…

Strongly Correlated Electrons · Physics 2024-08-22 Pengwei Zhao , Gang V. Chen

The honeycomb compound $\alpha$-RuCl$_3$ is widely discussed as a proximate Kitaev spin-liquid material. This scenario builds on spin-orbit entangled $j = 1/2$ moments arising for a $t_{2g}^5$ electron configuration with strong spin-orbit…

Strongly Correlated Electrons · Physics 2020-10-21 P. Warzanowski , N. Borgwardt , K. Hopfer , T. C. Koethe , P. Becker , V. Tsurkan , A Loidl , M. Hermanns , P. H. M. van Loosdrecht , M. Grüninger

We report the magnetic excitation spectrum as measured by inelastic neutron scattering for a polycrystalline sample of Sr$_3$CuPtO$_6$. Modeling the data by the 2+4 spinon contributions to the dynamical susceptibility within the chains, and…

We use inelastic neutron scattering to show that superconductivity in electron-underdoped NaFe0.985Co0.015As induces a dispersive sharp resonance near Er1 = 3:25 meV and a broad dis- persionless mode at Er2 = 6 meV. However, similar…

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