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The recent discovery of skyrmions in Cu$_2$OSeO$_3$ has established a new platform to create and manipulate skyrmionic spin textures. We use high-field electron spin resonance (ESR) spectroscopy combining a terahertz free electron laser and…

Strongly Correlated Electrons · Physics 2014-10-15 M. Ozerov , J. Romhányi , M. Belesi , H. Berger , J. -Ph. Ansermet , Jeroen van den Brink , J. Wosnitza , S. A. Zvyagin , I. Rousochatzakis

Understanding the coherent properties of electron spins driven by electric fields is crucial for their potential application in quantum-coherent nanoscience. In this work, we address two distinct driving mechanisms in electric-field driven…

Mesoscale and Nanoscale Physics · Physics 2025-12-18 Jose Reina-Galvez , Matyas Nachtigall , Nicolas Lorente , Jan Martinek , Christoph Wolf

The electric control of quantum spin chains has been an outstanding goal for the few last years due to its potential use in technologies related to quantum information processing. In this work, we show the feasibility of the different steps…

Quantum Physics · Physics 2024-08-14 Diego Acosta Coden , Omar Osenda , Alejandro Ferrón

We demonstrate detection of a weak alternate-current magnetic field by application of the spin echo technique to F = 2 Bose-Einstein condensates. A magnetic field sensitivity of 12 pT/Hz^1/2 is attained with the atom number of 5*10^3 at…

A scanning tunneling microscope can probe the inelastic spin excitations of a single magnetic atom in a surface via spin-flip assisted tunneling in which transport electrons exchange spin and energy with the atomic spin. If the inelastic…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 F. Delgado , J. Fernández-Rossier

In this work, we demonstrate the use of frequency-tunable superconducting NbTiN coplanar waveguide microresonators for multi-frequency pulsed electron spin resonance (ESR) experiments. By applying a bias current to the center pin, the…

Quantum Physics · Physics 2017-07-19 A. T. Asfaw , A. J. Sigillito , A. M. Tyryshkin , T. Schenkel , S. A. Lyon

It is shown that our multi-high-frequency (40-200 GHz) resonant cavity technique yields distortion-free high field EPR spectra for single crystal samples of the uniaxial and biaxial spin S = 10 single molecule magnets (SMMs)…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 S. Hill , S. Maccagnano , K. Park , R. M. Achey , J. M. North , N. S. Dalal

The MRFM device is a powerful setup for manipulating single electron spin in resonance in a magnetic field. However, the real time observation of a resonating spin is still an issue because of the very low SNR of the output signal. This…

Quantum Physics · Physics 2007-05-23 Cyril Hory , Alfred O. Hero

Recent advances in transmission electron microscopy (TEM) have opened the path toward spin resonance spectroscopy with single-spin sensitivity. To assess this potential, we investigate the quantum precision limits for sensing magnetic…

We study the electric-dipole transitions for a single electron in a double quantum dot located in a semiconductor nanowire. Enabled by spin-orbit coupling (SOC), electric-dipole spin resonance (EDSR) for such an electron can be generated…

Mesoscale and Nanoscale Physics · Physics 2018-05-16 Zhi-Hai Liu , Rui Li , Xuedong Hu , J. Q. You

The nuclear magnetic resonance (NMR) spectrum of spin-3/2 nuclei in a static magnetic field aligned with one of the electric field gradient (EFG) principal axes is developed analytically, based on fictitious spin-1/2 formalism. Compact…

Superconductivity · Physics 2024-12-17 Jaafar N. Ansari , Karen L. Sauer

Detecting individual spins--including stable and metastable states--represents a fundamental challenge in quantum sensing with broad applications across condensed matter physics, quantum chemistry, and single-molecule magnetic resonance…

In this paper, we report on simulations of an Electron Spin Resonance (ESR) RF control line for semiconductor electron spin qubits. The simulation includes both the ESR line characteristics (geometry and configuration, stack and material…

Studying single-atom magnetic anisotropy on surfaces enables the exploration of the smallest magnetic storage bit that can be built. In this work, magnetic anisotropy of a single rare-earth atom on a surface is studied computationally for…

Mesoscale and Nanoscale Physics · Physics 2012-03-05 Jing-Neng Yao , Chiung-Yuan Lin

Spin-dependent charge transfer decay in an alkali atom doped polyacetylene is studied in terms of the complex spectral analysis, revealing the single-spin Zeeman splitting influenced by the spin-orbit interaction. Nonhermitian effective…

Single spins in the solid-state offer a unique opportunity to store and manipulate quantum information, and to perform quantum-enhanced sensing of local fields and charges. Optical control of these systems using techniques developed in…

Mesoscale and Nanoscale Physics · Physics 2013-02-28 Anthony J. Bennett , Matthew A. Pooley , Yameng Cao , Niklas Sköld , Ian Farrer , David A. Ritchie , Andrew J. Shields

In this study, sub-angstrom spatial resolution is achieved in mapping and spectroscopy of atoms and bonds within polygonal grain boundaries (GBs) of graphite using Scanning Tunneling Microscopy (STM). Robust van Hove singularities (VHS) are…

Mesoscale and Nanoscale Physics · Physics 2023-11-29 Nirjhar Sarkar , Prabhakar R. Bandaru , Robert C. Dynes

The magnetic moment of rare earth elements originates from electrons in the partially filled 4f orbitals. Accessing this moment electrically by scanning tunneling spectroscopy is hampered by shielding of outer-lying orbitals. Here we show…

Mesoscale and Nanoscale Physics · Physics 2020-04-29 Markus Ternes , Christopher P. Lutz , Andreas J. Heinrich , Wolf-Dieter Schneider

We have developed a spin-resolved resonant electron energy-loss spectroscopy (SR-rEELS) in the primary energy of 0.3--1.5 keV, which corresponds to the core excitations of $2p$-$3d$ absorption of transition metals and $3d$-$4f$ absorption…

Quantum control of individual spins in condensed matter systems is an emerging field with wide-ranging applications in spintronics, quantum computation, and sensitive magnetometry. Recent experiments have demonstrated the ability to address…

Mesoscale and Nanoscale Physics · Physics 2011-09-09 M. S. Grinolds , P. Maletinsky , S. Hong , M. D. Lukin , R. L Walsworth , A. Yacoby
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