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We use a novel Monte Carlo method to study the Mott transition in an anisotropic triangular lattice. The real space approach, retaining extended spatial correlations, allows an accurate treatment of non trivial magnetic fluctuations in this…

Strongly Correlated Electrons · Physics 2013-01-23 Rajarshi Tiwari , Pinaki Majumdar

The linear magneto-optical Kerr effect (MOKE) is often used to probe magnetism of ferromagnetic materials, but MOKE cannot be applied to collinear antiferromagnets (AFs) due to the cancellation of sub-lattice magnetization. Magneto-optical…

We study the effects of the exchange interaction between an adsorbed magnetic atom with easy-axis magnetic anisotropy and the conduction-band electrons from the substrate. We model the system using an anisotropic Kondo model and we compute…

Mesoscale and Nanoscale Physics · Physics 2010-08-10 Rok Zitko , Thomas Pruschke

The application of gate voltages in heavy metal/ferromagnet/Oxide multilayer stacks has been identified as one possible candidate to manipulate their anisotropy at will. However, this method has proven to show a wide variety of behaviours…

Mesoscale and Nanoscale Physics · Physics 2023-05-24 Adriano Di Pietro , Rohit Pachat , Liza Herrera Diez , Johannes W. van der Jagt , Dafiné Ravelosona , Gianfranco Durin

The Fe/MgO interface is an essential ingredient in spintronics as it shows giant tunneling magnetoresistance and strong perpendicular magnetic anisotropy (PMA). A recent study demonstrated that the insertion of an ultra-thin LiF layer…

Materials Science · Physics 2022-11-16 Shoya Sakamoto , Takayuki Nozaki , Shinji Yuasa , Kenta Amemiya , Shinji Miwa

Density-functional calculations are performed to explore magnetoelectric effects originating from the influence of an external electric field on magnetic properties of the Fe/MgO(001) interface. It is shown that the effect on the interface…

Materials Science · Physics 2010-03-31 Manish K. Niranjan , Chun-Gang Duan , Sitaram S. Jaswal , Evgeny Y. Tsymbal

Ferromagnetic Co$_2$MnGa has recently attracted significant attention due to effects related to non-trivial topology of its band structure, however a systematic study of canonical magneto-galvanic transport effects is missing. Focusing on…

Magneto-optic Kerr effect (MOKE) is a powerful probe of broken time-reversal symmetry ($\mathcal{T}$), typically used to study ferromagnets. While MOKE has been observed in some antiferromagnets (AFMs) with vanishing magnetization, it is…

Materials Science · Physics 2026-01-08 V. Sunko , S. Ahsanullah , V. Jain , S. Weber , S. Kumaran , J. -Q. Yan , J. Orenstein , D. Ovchinnikov

We experimentally demonstrate that a squeezed probe optical field can improve the sensitivity of the magnetic field measurements based on nonlinear magneto-optical rotation (NMOR) with an amplitude-modulated pump when compared to a coherent…

Quantum Physics · Physics 2023-07-19 Jiahui Li , Irina Novikova

We report the emergence of a novel interface-induced shape anisotropy component in zigzag-structured thin films fabricated via Sequential Oblique Angle Deposition (S-OAD). In this study, we systematically investigate cobalt (Co) and Co2FeAl…

We study electromagnetically induced transparency (EIT) in a heated potassium vapor cell, using a simple optical setup with a single free-running diode laser and an acousto-optic modulator. Despite the fact that the Doppler width is…

Optics · Physics 2016-07-01 Andreas Lampis , Robert Culver , Balázs Megyeri , Jon Goldwin

We report on the magneto-optical spectroscopy and cathodoluminescence of a set of wurtzite (Ga,Mn)N epilayers with a low Mn content, grown by molecular beam epitaxy. The sharpness of the absorption lines associated to the Mn$^{3+}$ internal…

We demonstrate a versatile variable field module (VFM) with capability of both field and angular dependent measurements up to 1800 Oe for scanning probe system. The magnetic field strength is changed by adjusting the distance between a rare…

Instrumentation and Detectors · Physics 2013-01-23 Hongxue Liu , Ryan Comes , Jiwei Lu , Stuart Wolf , Jim Hodgson , Maarten Rutgers

The static and dynamic magnetic properties of tetragonally distorted Mn--Ga based alloys were investigated. Static properties are determined in magnetic fields up to 6.5~T using SQUID magnetometry. For the pure Mn$_{1.6}$Ga film, the…

In this contribution to PSAS'2010 we report on recent progress on an experiment aimed at measuring small optical directional anisotropies by frequency metrology in a high finesse ring cavity. We focus on our first experimental goal, the…

Quantum Physics · Physics 2015-05-20 Cécile Robilliard , Gilles Bailly

Investigation of magnetic materials using the first-order magneto-optical Kerr effects (MOKE) is well established and is frequently used in the literature. On the other hand, the utilization of the second-order (or quadratic)…

Materials Science · Physics 2015-06-12 N. Tesarova , J. Subrt , P. Maly , P. Nemec , C. T. Ellis , A. Mukherjee , J. Cerne

Van der Waals (vdW) magnets are promising owing to their tunable magnetic properties with doping or alloy composition, where the strength of magnetic interactions, their symmetry, and magnetic anisotropy can be tuned according to the…

We report on broad-band electron spin resonance measurements performed within the itinerant ferromagnetic phase of $R$CoPO ($R$ = La, Pr, Nd and Sm). We reveal that the $R$ substitution is highly effective in gradually introducing a…

Strongly Correlated Electrons · Physics 2016-07-19 G. Prando , A. Alfonsov , A. Pal , V. P. S. Awana , B. Büchner , V. Kataev

We report a study of interlayer exchange interaction in multilayer CoPt/Co structures consisting of periodic CoPt multilayer film with an "easy axis" anisotropy and thick Co layer with an "easy plane" anisotropy separated by Pt spacer with…

Mesoscale and Nanoscale Physics · Physics 2016-11-23 E. S. Demidov , N. S. Gusev , L. I. Budarin , E. A. Karashtin , V. L. Mironov , A. A. Fraerman

Single-ion magnetic anisotropy in molecular magnets leads to spin flip excitations that can be measured by inelastic scanning tunneling microscope (STM) spectroscopy. Here I present a semi ab initio scheme to compute the spectral features…

Mesoscale and Nanoscale Physics · Physics 2018-08-16 David Jacob