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We study the light emission from a Ag(111) surface when the bias voltage on a scanning tunneling microscope (STM) junction is ramped into the field emission regime. Above the vacuum level, scanning tunneling spectroscopy (STS) shows a…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 Jesús Martínez-Blanco , Stefan Fölsch

Imaging the fields of magnetic materials provides crucial insight into the physical and chemical processes surrounding magnetism, and has been a key ingredient in the spectacular development of magnetic data storage. Existing approaches…

In the optical pumping systems based on the pump-probe arrangement, the spin polarization of the atoms is generally monitored utilizing the probe laser beam, in which way an extra perturbation must be introduced and thus affects the normal…

Atomic Physics · Physics 2017-02-09 Jiancheng Fang , Rujie Li , Lihong Duan , Wenfeng Fan , Liwei Jiang

This manuscript demonstrates the theory, design, and simulation of scattering scanning near field microscopy (s-SNOM) in 0.5THz. A comprehensive simulation model of nanotips' geometry, sample materials, and incident field is established to…

Optics · Physics 2023-07-04 Zeliang Zhang , Pengfei Qi , Olga Kosavera , Cheng Gong , Lie Lin , Weiwei Liu

Optical pump-probe techniques are used to generate and measure electron spin polarization in a gallium arsenide epilayer in which the electron spin coherence time exceeds the mode-locked laser repetition period. Resonant spin amplification…

Mesoscale and Nanoscale Physics · Physics 2020-09-14 Michael Macmahon , Joseph R. Iafrate , Michael J. Dominguez , Vanessa Sih

The photo-production of a pair of scalar particles in the presence of an intense, circularly polarized laser beam is investigated. Using the optical theorem within the framework of scalar quantum electrodynamics, explicit expressions are…

High Energy Physics - Phenomenology · Physics 2013-01-14 Selym Villalba-Chávez , Carsten Müller

Particles with electric charge 10^(-12)e in bulk mass are not excluded by present experiments. In the present letter we provide a feasible scheme to measure the millicharged particles via the optical cavity coupled to a levitated…

High Energy Physics - Experiment · Physics 2017-10-11 Jian Liu , Ka-Di Zhu

Scanning Surface Potential Microscopy (SSPM) is one of the most widely used techniques for the characterization of electrical properties at small dimensions. Applicability of SSPM and related electrostatic scanning probe microscopies for…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Sergei V. Kalinin , Marcus Freitag , A. T. Johnson , Dawn A. Bonnell

We present an alternative switching-magnetization magnetic force microscopy (SM- MFM) method using planar tip-on-chip probes. Unlike traditional needle-like tips, the planar probe approach integrates a microdevice near the tip apex with…

Scanning tunneling microscopy (STM) can be used to detect inelastic spin transitions in magnetic nano-structures comprising only a handful of atoms. Here we demonstrate that STM can uniquely identify the electrostatic spin crossover effect,…

Mesoscale and Nanoscale Physics · Physics 2015-06-15 Aaron Hurley , Nadjib Baadji , Stefano Sanvito

We report on experimental verification of the rotational sense and type of homogeneous chiral spin spiral order in a Mn monolayer on a W(110) substrate using spin-polarized scanning tunneling microscopy. We found that the magnetic contrast…

Mesoscale and Nanoscale Physics · Physics 2016-04-06 Masahiro Haze , Yasuo Yoshida , Yukio Hasegawa

In this work we present the results of an experiment to locally resolve the spin Seebeck effect in a high-quality Pt/YIG sample. We achieve this by employing a locally heated scanning thermal probe to generate a highly local non-equilibrium…

Mesoscale and Nanoscale Physics · Physics 2020-09-30 Alessandro Sola , Vittorio Basso , Massimo Pasquale , Carsten Dubs , Craig Barton , Olga Kazakowa

This work combines new observations of NIR starlight linear polarimetry with previously simulated observations in order to constrain dynamo models of the Galactic magnetic field. Polarimetric observations were obtained with the Mimir…

Astrophysics of Galaxies · Physics 2015-06-04 Michael D. Pavel , Dan P. Clemens , April F. Pinnick

Polarized neutron reflectometry (PNR) has long been applied to measure the magnetic depth profile of thin films. In recent years, interest has increased in observing lateral magnetic structures in a film. While magnetic arrays patterned by…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 W. -T. Lee , S. G. E. te Velthuis , G. P. Felcher , F. Klose , T. Gredig , D. Dahlberg , B. V. Toperverg

A simple, reliable method for preparation of bulk Cr tips for Scanning Tunneling Microscopy (STM) is proposed and its potentialities in performing high-quality and high-resolution STM and Spin Polarized-STM (SP-STM) are investigated. Cr…

In modern technology, the optical readout of magnetic information is conventionally achieved by the magneto-optical Kerr effect, i.e., the polarization rotation of reflected light. The Kerr rotation is sensitive to time-reversal symmetry…

Strongly Correlated Electrons · Physics 2026-01-21 H. Yoshimochi , K. Yoshida , R. Oiwa , T. Nomoto , N. D. Khanh , A. Kitaori , R. Takagi , R. Arita , S. Seki

Scanning Tunneling Microscopy (STM) has revolutionized our atomic scale understanding of surfaces and accelerated progress in nanotechnology. This technique, however, is restricted to metal or semiconducting samples, as it requires a tiny…

Instrumentation and Detectors · Physics 2026-04-16 M. J. Rost

Ferroelectric materials possess spontaneous polarization that can be used for multiple applications. Owing to a long term development for reducing the sizes of devices, the preparation of ferroelectric materials and devices are entering…

When a beam of light is laterally confined, its field distribution can exhibit points where the local magnetic and electric field vectors spin in a plane containing the propagation direction of the electromagnetic wave. The phenomenon…

Optics · Physics 2018-05-23 Martin Neugebauer , Jörg Eismann , Thomas Bauer , Peter Banzer

We previously reported [Naruse, et al. Sci. Rep. 4, 6077, 2014] that the geometrical randomness of disk-shaped silver nanoparticles, which exhibit high reflection at near-infrared wavelengths, serves as the origin of a particle-dependent…