Download or read book Magnetic Resonance Force Microscopy And A Single spin Measurement written by Gennady P Berman and published by World Scientific. This book was released on 2006-09-20 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic resonance force microscopy (MRFM) is a rapidly evolving field which originated in 1990s and matured recently with the first detection of a single electron spin below the surface of a non-transparent solid. Further development of MRFM techniques will have a great impact on many areas of science and technology including physics, chemistry, biology, and even medicine. Scientists, engineers, and students from various backgrounds will all be interested in this promising field.The objective of this “multi-level” book is to describe the basic principles, applications, and the advanced theory of MRFM. Focusing on the experimental oscillating cantilever-driven adiabatic reversals (OSCAR) detection technique for single electron spin, this book contains valuable research data for scientists working in the field of quantum physics or magnetic resonance. Readers unfamiliar with quantum mechanics and magnetic resonance will be able to obtain an understanding and appreciation of the basic principles of MRFM.

Download or read book Magnetic Resonance Force Microscopy and a Single spin Measurement written by Gennady P. Berman and published by . This book was released on 2006 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of Single Spin Measurement with Magnetic Resonance Force Microscopy written by 林威仰 and published by . This book was released on 2007 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Single spin Measurements for Quantum Computation Using Magnetic Resonance Force Microscopy written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The quantum theory of a singlespin measurements using a magnetic resonance force microscopy is presented. We use an oscillating cantilever-driven adiabatic reversals technique. The frequency shift of the cantilever vibrations is estimated. We show that the frequency shift causes the formation of the Schroedinger cat state for the cantilever. The interaction between the cantilever and the environment quickly destroys the coherence between the two cantilever trajectories. It is shown that using partial adiabatic reversals one can obtain a significant increase in the frequency shift. We discuss the possibility of sub-magneton spin density detection in molecules using magnetic resonance force microscopy.

Download or read book Single Spin Magnetic Resonance Force Microscopy written by and published by . This book was released on 2005 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: IBM and its subcontractors achieved the major goal of this contract: the detection of individual electron spins by magnetic resonance force microscopy (MRFM). To achieve this result a number of key elements were developed, including a low temperature apparatus capable of detecting ultrasmall (attonewton) forces, specialized cantilever force sensors, methods for manipulating and detecting electron spins with random initial polarization, etc. In addition, both theoretical and experimental work has been performed to study MRFM detection of nuclear spins.

Download or read book Dynamics of Paramagnetic Spins written by Jeremy D. Cardellino and published by . This book was released on 2015 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic Resonance Force Microscopy (MRFM) is a challenging yet incredibly sensitive tool for characterizing and imaging magnetic materials down to the nanoscale. It combines the technology of scanned probe microscopy with the powerful spectral techniques of magnetic resonance. The MRFM can measure very small spin ensembles, down to a single electron spin, and the measurements are performed at thermal equilibrium. Instead of perturbing the polarization away from equilibrium, the 'spin noise' or statistical spin fluctuations are used to generate a force signal. Here I show MRFM measurements on a nanoscale 'spin wire', which is a narrow, high spin density region implanted in a diamond substrate. The spin wire measurements reveal an interesting interplay between the transport and lifetime of spins confined within the nanoscale diamond wire which are relevant for the development of nanoscale spintronics. Additionally, I show measurements which resolve the hyperfine spectrum of the defects in the spin wire by measuring less than 100 net spins.

Download or read book High Sensitivity Electron Spin Resonance by Magnetic Resonance Force Microscopy at Low Temperature written by Kin Chung Fong and published by . This book was released on 2008 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: This dissertation describes the development and usage of the experimental technique - Magnetic Resonance Force Microscopy (MRFM) - to study electron spin resonance at low temperature in sensitivity as high as two electron spins. MRFM detects magnetic resonance by sensing the small force acting on the cantilever by the paramagnetic electron spins in the sample through magnetic coupling. I have applied this technique to measure the fluctuating magnetic moments of few electron spin ensembles known as the statistical polarization or the spin noise. In this dissertation, I describe the basic principles and setup of the MRFM experiments. I have used the MRFM experiment to verify that applying negative feedback to the cantilever can reduce the cantilever response time without sacrificing the signal-to-noise ratio in the force detection. Using the new spin manipulation scheme and the microwave resonator I designed for low temperature MRFM experiments, MRFM force spectra are measured and understood by modeling the spins undergoing magnetic resonance in an inhomogeneous magnetic field. I have used the high sensitivity MRFM experiment to observe the real-time fluctuation of the electron spin magnetic moments. From the statistics of this fluctuation, the number of resonating spins and the correlation time of the statistical polarization are measured. I have shown that the spin correlation time is due to the one and two phonon relaxation processes in the silicon dioxide sample by measuring the spin correlation time in various sample temperature. As the fluctuating time scale of the statistical polarization is not dominated by the MRFM instrumentation processes, the measured spin correlation time can be used to enhance image contrast by the relaxation-weighted imaging.

Download or read book Single Nuclear Spin Magnetic Resonance Force Microscopy written by and published by . This book was released on 2010 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: We describe the accomplishments of the collaborative research project performed at Ohio State University (OSU) and the University of Illinois at Urbana-Champaign (UIUC) with the support of ARO MURI grant W911NF-05-1-0414 between August 1, 2004 and July 31, 2009. Frequent interactions with Dan Rugar (IBM Almaden) have contributed significantly to our research. Our primary goal-single nuclear spin Magnetic Resonance Force Microscopy (MRFM)-calls for ultrasensitive detection as signal forces will be below 1 aN. We report several foundational accomplishments central to the achievement of this extraordinary sensitivity and development of methods for applying this technique to scientifically and technologically important problems. The primary milestones include but are not limited to: 1. Mitigation of sample-induced noise to enable sensitive ESR-MRFM detection of 2.3 electron spins in a 0.20 Hz bandwidth 2. Application of ultra-sensitive ESR-MRFM to the study of electron spin relaxation in spin ensembles containing of order 100 electron spins 3. Advances in development and characterization of semiconducting (Si) nanowires as next-generation ultrasensitive force detectors 4. Demonstration of high sensitivity Cu NMR measurements in technologically important layered metallic systems We have transferred expertise and technology for high sensitivity scanned probe magnetic resonance detection to DOD and DOE labs needing state-of-the-art spin imaging capabilities; these include the Naval Research Lab (NRL) and Los Alamos National Lab. In work not directly supported by this grant, these projects advanced MRFM detected Ferromagnetic Resonance (FMR) to enable studies of submicron magnetic structures having relevance to magnetoelectronics, magnetic field sensors and the magnetic data storage.

Download or read book Magnetic Resonance Force Microscopy and the Spin Bath written by and published by . This book was released on 2018 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MAGNETIC RESONANCE FORCE MICROSCOPY AND A SOLID STATE QUANTUM COMPUTER written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Single spin Microscope with Sub nanoscale Resolution Based on Optically Detected Magnetic Resonance written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Invention of scanning tunneling microscope (STM) and atomic force microscope (AFM) initiated a new era of material science and technology characterized by 2-D imaging with atomic resolution and manipulation of individual atoms. However, for further progress in material science, and in particular in structural biology, 3-D imaging with sub-nanometer resolution is very desirable. Currently the most promising technique for 3-D imaging is magnetic resonance force microscopy (MRFM), which senses individual electron spins [1,2] with nanoscale resolution and can detect collective magnetization of about 100 nuclear spins [3]. The highest sensitivity demonstrated by MRFM is based on a time modulation technique called the oscillating cantilever-driven adiabatic reversals (OSCAAR) which requires a long phase relaxation time T 2 of measured spins, which usually corresponds to rather low temperature. For example, a temperature of 300 mK was used in the case of 3D imaging of the tobacco mosaic virus [3]. This limitation is incompatible with the room-temperature operation needed for the study of biological systems under physiological conditions.

Download or read book Studying Paramagnetic Impurities in Diamond with Magnetic Resonance Force Microscopy written by Michael Ray Herman and published by . This book was released on 2011 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Combining the techniques of magnetic resonance imaging (MRI) with cantilever force microscopy, images with a resolution of a single electron have been demonstrated. This technique has been coined magnetic resonance force microscopy (MRFM). Although a very new technique it has already changed the field of molecular imaging by mapping a single tobacco mosaic virus with less than 10 nm resolution. To further the field of condensed matter physics, MRFM was employed to study impurity centers in diamond to better understand the interactions between electrons and their environment. To achieve this, nitrogen substitution impurities, commonly known as P1 centers, are introduced into diamond samples, enabling the measurement of the fluctuating spin of a single electron at equilibrium. The difficulty of this can only be fully appreciated after observing that the single shot signal to noise ratio is below 0.1. By optimizing both the magnetic probe and the sample, MRFM measurements with a refined signal to noise ratio are obtained. Specifically, ion implantation in diamond creates samples with the desired density of impurities. Employing such samples, characteristics of electron spin diffusion, through spin-spin interactions, are directly observed for the first time. This allows for the measurement of the spin relaxation time and spin diffusion constant. These results are in agreement with previous data from our research group taken in E-prime centers and a theoretical model of spin diffusion. Together these results will allow for better understanding and improved resolution of images taken by MRFM, potentially allowing for single atom imaging of viruses, bacteria and proteins.

Download or read book Ro Ro 81 Conference written by and published by . This book was released on 1981 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Towards magnetic resonance in scanning tunneling microscopy using heterodyne detection written by Peter, Moritz and published by KIT Scientific Publishing. This book was released on 2015-09-18 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present work introduces a new concept for magnetic resonance measurements in the GHz regime inside a scanning tunneling microscope. It is based on heterodyne detection in a spin-polarized tunneling barrier. The experimental requirements, including a new method to suppress transmission effects, are explained. Measurements on three model systems which were studied to validate the new technique are presented and compared to simulations.

Download or read book Magnetic Resonance of Semiconductors and Their Nanostructures written by Pavel G. Baranov and published by Springer. This book was released on 2017-03-20 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains different magnetic resonance (MR) techniques and uses different combinations of these techniques to analyze defects in semiconductors and nanostructures. It also introduces novelties such as single defects MR and electron-paramagnetic-resonance-based methods: electron spin echo, electrically detected magnetic resonance, optically detected magnetic resonance and electron-nuclear double resonance – the designated tools for investigating the structural and spin properties of condensed systems, living matter, nanostructures and nanobiotechnology objects. Further, the authors address problems existing in semiconductor and nanotechnology sciences that can be resolved using MR, and discuss past, current and future applications of MR, with a focus on advances in MR methods. The book is intended for researchers in MR studies of semiconductors and nanostructures wanting a comprehensive review of what has been done in their own and related fields of study, as well as future perspectives.

Download or read book Surface Science Tools for Nanomaterials Characterization written by Challa S.S.R. Kumar and published by Springer. This book was released on 2015-03-10 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fourth volume of a 40volume series on nano science and nanotechnology, edited by the renowned scientist Challa S.S.R. Kumar. This handbook gives a comprehensive overview about Surface Science Tools for Nanomaterials Characterization. Modern applications and state-of-the-art techniques are covered and make this volume an essential reading for research scientists in academia and industry.

Download or read book MEMS and Microstructures in Aerospace Applications written by Robert Osiander and published by CRC Press. This book was released on 2018-10-03 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: The promise of MEMS for aerospace applications has been germinating for years, and current advances bring the field to the very cusp of fruition. Reliability is chief among the challenges limiting the deployment of MEMS technologies in space, as the requirement of zero failure during the mission is quite stringent for this burgeoning field. MEMS and Microstructures in Aerospace Applications provides all the necessary tools to overcome these obstacles and take MEMS from the lab bench to beyond the exosphere. The book begins with an overview of MEMS development and provides several demonstrations of past and current examples of MEMS in space. From this platform, the discussion builds to fabrication technologies; the effect of space environmental factors on MEMS devices; and micro technologies for space systems, instrumentation, communications, thermal control, guidance navigation and control, and propulsion. Subsequent chapters explore factors common to all of the described systems, such as MEMS packaging, handling and contamination control, material selection for specific applications, reliability practices for design and application, and assurance practices. Edited and contributed by an outstanding team of leading experts from industry, academia, and national laboratories, MEMS and Microstructures in Aerospace Applications illuminates the path toward qualifying and integrating MEMS devices and instruments into future space missions and developing innovative satellite systems.