Applied Magnetic Resonance最新文献_第4页

Spin Noise Spectroscopy in Application to Dielectric and Semiconductor Paramagnets 自旋噪声光谱在介电和半导体顺磁体中的应用

IF 1.3 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2026-07-16 DOI: 10.1007/s00723-026-01853-9

Kozlov Vadim, Smirnov Ilia, Ryzhov Ivan

{"title":"Spin Noise Spectroscopy in Application to Dielectric and Semiconductor Paramagnets","authors":"Kozlov Vadim, Smirnov Ilia, Ryzhov Ivan","doi":"10.1007/s00723-026-01853-9","DOIUrl":"10.1007/s00723-026-01853-9","url":null,"abstract":"<div>Spin noise spectroscopy (SNS) has matured from a subtle effect in atomic vapors into a uniquely versatile optical tool for probing spin dynamics in condensed matter. Unlike conventional spectroscopic methods, SNS requires no resonant excitation or optical pumping—it passively probes the stochastic Faraday rotation arising from spontaneous magnetization fluctuations of an equilibrium spin ensemble. This nonperturbative nature, combined with a spin sensitivity that is proportional to the square root of the total probed spins, makes SNS ideal for studying small spin ensembles, local environments, and weakly coupled subsystems. In this review, we illustrate the power of SNS through recent accomplishments. First, we present the balance between nonperturbative measurement and optically induced phenomena, observed in a one-beam stationary experiment. This includes the observation of optically induced effective magnetic field (AC Stark effect) in n-GaAs microcavities, the direct detection of nuclear spin polarization buildup and decay, and the local optical electron to hole recharging of perovskite nanocrystals. Second, we turn to power-independent SNS abilities. We highlight SNS’s remarkable sensitivity to crystalline symmetry—from resolving anisotropic paramagnetic centers in cubic and birefringent crystals to uncovering hidden twinning domains in bulk halide perovskites. Finally, we demonstrate how the optical selectivity of SNS allows one to address individual groups of paramagnetic defects by probe wavelength tuning, a capability unattainable by conventional EPR. These examples establish SNS not only as a powerful diagnostic for fundamental spin physics, but also as a promising tool for future spintronic, magnetometric, and material engineering applications.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"57 8","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148459112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interaction of L-Tryptophan in Aqueous Solutions with Platinum and Gold Nanoparticles of Different Morphologies 水溶液中l -色氨酸与不同形态的铂和金纳米粒子的相互作用

IF 1.3 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2026-07-14 DOI: 10.1007/s00723-026-01849-5

Galina Kupriyanova, Mark Smirnov, Ivan Mershiev, Aleksandr Zozulya, Andrey Zyubin, Mark Kaplanskiy

{"title":"Interaction of L-Tryptophan in Aqueous Solutions with Platinum and Gold Nanoparticles of Different Morphologies","authors":"Galina Kupriyanova, Mark Smirnov, Ivan Mershiev, Aleksandr Zozulya, Andrey Zyubin, Mark Kaplanskiy","doi":"10.1007/s00723-026-01849-5","DOIUrl":"10.1007/s00723-026-01849-5","url":null,"abstract":"<div>This study presents for the first time a comprehensive study of the mechanisms of interaction L-tryptophan (L-Trp) in aqueous solution with platinum (Pt) and gold nanoparticles (Au NPs) of different shapes based on 1H NMR, DOSY spectroscopy, T1 relaxation measurements, and data analysis. This paper introduces criteria for assessing the degree of L-Trp binding to Au NPs, including the probability of π-stacking, such as the multidirectional changes in chemical shift, the slowing of molecular motion, and the contribution of surface-induced relaxation. Based on these criteria, it is shown that the mechanism of interaction between L-Trp and Au NPs is critically dependent on Au NP morphology. The diffusion coefficient data set demonstrates that rod- and star-shaped Au NPs have a significantly stronger effect on translational diffusion than their spherical counterparts, reflecting differences in surface morphology, contact area, and heterogeneity of binding sites (L-Trp: D = (6.50 ± 0.2) × 10⁻10 m2/s, L-Trp + Au RNP: D = (5.50 ± 0.2) × 10 ⁻10 m2/s; L-Trp + Au SNP: D = (5.90 ± 0.20) × 10⁻10 m2/s). The DFT/SAPT analysis complements the experimental 1H NMR data and supplies an independent structural–energetic justification for our interpretation: in the absence of strong shielding by an organic corona, π‑stacking of the indole ring is the most plausible and energetically favorable adsorption mode of L-Trp on Au NPs.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"57 6-7","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Environment on Quantum Correlations in Two-Spin Systems with Dipole-Dipole Interactions 环境对具有偶极-偶极相互作用的双自旋系统中量子相关的影响

IF 1.3 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2026-07-11 DOI: 10.1007/s00723-026-01856-6

G. A. Bochkin, E. B. Fel’dman, E. I. Kuznetsova, E. I. Shipulya

引用次数: 0

Absorption Detected Magnetic Resonance (ADMR) for the Investigation of Electronic Interactions in Biological Multichromophoric Systems 吸收检测磁共振（ADMR）用于研究生物多显色体系中的电子相互作用

IF 1.3 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2026-07-09 DOI: 10.1007/s00723-026-01857-5

Donatella Carbonera, Agostino Migliore, Alessandro Agostini

引用次数: 0

On-site Nuclear Environment of the N Donors and NVk1k2 Centers in 6H-SiC 6H-SiC中N给体和NVk1k2中心的现场核环境

IF 1.3 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2026-07-05 DOI: 10.1007/s00723-026-01854-8

Yu. E. Ermakova, E. V. Dmitrieva, I. N. Gracheva, M. A. Sadovnikova, G. V. Mamin, E. N. Mokhov, M. R. Gafurov, F. F. Murzakhanov

{"title":"On-site Nuclear Environment of the N Donors and NVk1k2 Centers in 6H-SiC","authors":"Yu. E. Ermakova, E. V. Dmitrieva, I. N. Gracheva, M. A. Sadovnikova, G. V. Mamin, E. N. Mokhov, M. R. Gafurov, F. F. Murzakhanov","doi":"10.1007/s00723-026-01854-8","DOIUrl":"10.1007/s00723-026-01854-8","url":null,"abstract":"<div>Optically active spin centers in the solid-state matrices exhibit unique properties which make them promising objects for the reliable and scalable quantum technologies. Vacancy-related defects in the technologically mature silicon carbide (SiC) demonstrate optical emission in the near-infrared spectral range, providing low-loss channels for quantum communication networks. Nitrogen incorporation into SiC crystal leads to the formation of a spin center with an intrinsic nuclear spin I = 1. In the present work, electron paramagnetic resonance and electron–nuclear double resonance spectroscopy are employed to study nitrogen donors (S = 1/2) and negatively charged nitrogen-vacancy (NV⁻) centers (S = 1) at the quasicubic k1k2 position of the 6H-SiC crystal. Electron–nuclear interactions are investigated in both frequency ranges (9.6 GHz – X-band and 94 GHz – W-band) of the spectrometer in conditions of «strong» (A, Cq > νL = 1 MHz, X-band) and «weak» coupling (A, Cq < νL ≈ 10 MHz, W-band). Values of the hyperfine and quadrupole interaction tensors of the defect spin Hamiltonian are determined, reflecting the specific features of spin density distribution within the elementary unit cell. A substantial difference between the quadrupole coupling constants of the nitrogen donor (Cq ≤ 10 kHz) and the NV⁻k1k2 center (Cq = 2.43 MHz) suggests a dominant influence of the silicon vacancy VSi on the formation of the electric field gradient Vzz at the 14N nucleus. The obtained results concerning the local nuclear environment expand the current understanding of the properties of NV centers occupying structurally inequivalent positions in the 6H-SiC crystal lattice.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"57 6-7","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dinitrosyl Iron Complexes with Thiol-Containing Ligands in Aqueous Solution are Presented in their Cationic form with the d7 Electronic Configuration of Iron (Review) 水溶液中二硝基铁配合物与含硫醇配体的阳离子形式和铁的d7电子构型（综述）

IF 1.3 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2026-07-04 DOI: 10.1007/s00723-026-01851-x

A. F. Vanin

{"title":"Dinitrosyl Iron Complexes with Thiol-Containing Ligands in Aqueous Solution are Presented in their Cationic form with the d7 Electronic Configuration of Iron (Review)","authors":"A. F. Vanin","doi":"10.1007/s00723-026-01851-x","DOIUrl":"10.1007/s00723-026-01851-x","url":null,"abstract":"<div>It is assumed that the existence of dinitrosyl iron complexes (DNIC) with thiol-containing ligands in paramagnetic cationic or anionic forms (with d7 or d9 electron configurations of iron, respectively, described in the Enemark-Feltman representation by the formulas [Fe(NO)2]7 and [Fe(NO)2]9) is determined by the mechanism of formation of these complexes. The cationic form arises as a result of the disproportionation reaction of two NO molecules bound to the Fe2+ ion, whereas the anionic form of DNIC is formed as a result of one-electron reduction of the mononitrosyl Fe2+ complex by one of the two thiol-containing ligands, followed by the addition of a second NO molecule to the complex. In the absence of solvent, both forms of DNIC are characterized by a tetrahedral spatial structure. When dissolved in water, the cationic form, incorporating two water molecules, acquires a four-coordinated square-planar structure, the upper molecular orbital of which is characterized by the inclusion of the dz2 orbital of iron. The mononuclear cationic form of DNIC with thiol-containing ligands and a predominant resonance structure [(RS−)2Fe2+(NO)(NO+)]+ is capable of acting in living organisms as donors of both NO molecules and nitrosonium cations.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"57 6-7","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Orientational Crystallization of Gallium Induced by Magnetic Field 磁场诱导下镓的取向结晶

IF 1.3 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2026-07-02 DOI: 10.1007/s00723-026-01852-w

A. A. Vasilev, D. Yu. Nefedov, E. V. Charnaya, I. A. Kasatkin, Min Kai Lee, Lieh-Jeng Chang

引用次数: 0

Dual High-Field NMR Approach to Oil–Water Quantification in Porous Rocks 多孔岩石油水定量的双重高场核磁共振方法

IF 1.3 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2026-07-01 DOI: 10.1007/s00723-026-01845-9

Mariana Teixeira de Azevedo, Alexsandro S. E. Cruz, Alexandre M. Souza, Roberto S. Sarthour, Moacyr Nascimento, Ivan S. Oliveira

{"title":"Dual High-Field NMR Approach to Oil–Water Quantification in Porous Rocks","authors":"Mariana Teixeira de Azevedo, Alexsandro S. E. Cruz, Alexandre M. Souza, Roberto S. Sarthour, Moacyr Nascimento, Ivan S. Oliveira","doi":"10.1007/s00723-026-01845-9","DOIUrl":"10.1007/s00723-026-01845-9","url":null,"abstract":"<div>Accurate quantification of multiphase fluid saturations in reservoir rocks remains a central challenge in petrophysics, with direct implications for hydrocarbon recovery optimization. Here, we present an integrated methodology that combines high-field nuclear magnetic resonance (NMR) imaging with relaxation-based contrast to quantify oil and water distributions in synthetic porous media. Controlled porous samples were fabricated by sintering soda–lime glass microspheres with defined grain sizes (75–125 (upmu {text {m}}), 150–212 (upmu {text {m}}), 250–300 (upmu {text {m}})) and saturated with known oil–water proportions. Chemical shift contrast was employed to distinguish fluid phases, while transverse relaxation ((T_2)) measurements revealed distinct signal decay behaviors that enabled robust grayscale differentiation in high-field NMR images. A custom image-analysis software was developed to extract intensity histograms from (T_2)-weighted images, allowing pixel-level quantification of each fluid phase. Across all tested samples, the methodology achieved an average quantification error below 10%, demonstrating its robustness and potential as a non-invasive approach for fluid characterization in reservoir analogs, with relevance to reservoir characterization, enhanced oil recovery, and environmental applications.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"57 6-7","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00723-026-01845-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Resolution ODMR Spectra of Individual Hybrid 14NV–13C Spin Systems with Third-Shell 13C in Diamond for Nanoscale Vector Magnetometry: Theory and Experiment 金刚石中含有第三壳层13C的14NV-13C混合自旋体系的纳米矢量磁强计高分辨率ODMR光谱：理论与实验

IF 1.3 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2026-07-01 DOI: 10.1007/s00723-026-01847-7

A. P. Nizovtsev, A. L. Pushkarchuk, N. S. Kukin, A. R. Muradova, A. K. Nikitin, A. A. Bukhtiyarov, P. A. Semenov, V. G. Sukharev, A. N. Vasiliev, S. Ya. Kilin

{"title":"High-Resolution ODMR Spectra of Individual Hybrid 14NV–13C Spin Systems with Third-Shell 13C in Diamond for Nanoscale Vector Magnetometry: Theory and Experiment","authors":"A. P. Nizovtsev, A. L. Pushkarchuk, N. S. Kukin, A. R. Muradova, A. K. Nikitin, A. A. Bukhtiyarov, P. A. Semenov, V. G. Sukharev, A. N. Vasiliev, S. Ya. Kilin","doi":"10.1007/s00723-026-01847-7","DOIUrl":"10.1007/s00723-026-01847-7","url":null,"abstract":"<div>In recent decades, second-generation quantum technologies based on the practical use of individual quantum systems—atoms, molecules, impurity centers, and photons—have become one of a central focus of modern science. Among these, quantum magnetometry has emerged as one of the most advanced directions. In this field, nitrogen–vacancy (NV) centers in diamond, as well as their complexes with nuclear spins, are widely employed as sensors for measuring magnetic fields with nanometer-scale spatial resolution. However, due to the C3V symmetry of the NV center, information about the azimuthal angle of the magnetic field vector is not accessible. Here, we propose and experimentally demonstrate, for a first time, a method of vector magnetometry based on acquisition and theoretical analysis of high-resolution optically detected magnetic resonance (ODMR) spectra of an individual hybrid electron-nuclear three-spin system 14NV–13C, in which the electron spin of a single NV center is coupled by hyperfine interaction with the intrinsic nuclear spin of the 14N atom of the center as well as with the spin of the isotopic atom 13C, located in the third coordination sphere of the NV center.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"57 6-7","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evidences of Proton Transfer from Cation to Anion in Trialkylphosphonium Ionic Liquids 三烷基膦离子液体中质子从阳离子向阴离子转移的证据

IF 1.3 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2026-07-01 DOI: 10.1007/s00723-026-01850-y

Alexander E. Khudozhitkov, Iana A. Denisova, Daniil I. Kolokolov, Daniel Rauber, Frederik Philippi, Daniel Schroeder, Ralf Ludwig

{"title":"Evidences of Proton Transfer from Cation to Anion in Trialkylphosphonium Ionic Liquids","authors":"Alexander E. Khudozhitkov, Iana A. Denisova, Daniil I. Kolokolov, Daniel Rauber, Frederik Philippi, Daniel Schroeder, Ralf Ludwig","doi":"10.1007/s00723-026-01850-y","DOIUrl":"10.1007/s00723-026-01850-y","url":null,"abstract":"<div>Protic ionic liquids (PILs) can undergo a decomposition process involving proton transfer from the cation to the anion, which reduces ionicity and affects their physicochemical properties. Direct observation of this process remains challenging. Here, we use 2H NMR spectroscopy to study proton transfer and molecular dynamics in trimethylphosphonium-based ionic liquids with anions of varying basicity: methanesulfonate ([OMs]⁻), triflate ([OTf]⁻), and bis(trifluoromethanesulfonyl)imide ([NTf₂]⁻). By exchanging the acidic proton with deuterium, we selectively probe cation dynamics and detect deuterium transfer to the anion. At low temperatures, two distinct 2H NMR signals are observed, corresponding to immobile deuterium on the cation and mobile deuterium on the anion for [OMs-D] and [OTf-D]. In [NTf₂-D] no high-amplitude motion is detected due to the larger anion size. These results provide direct NMR evidence for the coexistence of charged and neutral species in phosphonium PILs. The high proportion of neutral species classifies them as “poor” ionic liquids with low ionicity.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"57 6-7","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0