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We studied spatial distribution of dynamic nuclear polarization (DNP) in a Hall-bar device in a breakdown regime of the quantum Hall effect (QHE). We detected nuclear magnetic resonance (NMR) signals from the polarized nuclear spins by…

介观与纳米尺度物理 · 物理学 2011-01-25 Minoru Kawamura , Kimitoshi Kono , Yoshiaki Hashimoto , Shingo Katsumoto , Tomoki Machida

We propose nucleon energy correlators (NECs) as a novel framework to probe electroweak light-quark dipole operators in deep inelastic scattering with an unpolarized nucleon. These operators encode chirality-flipping interactions, whose…

高能物理 - 唯象学 · 物理学 2026-04-07 Yingsheng Huang , Xuan-Bo Tong , Hao-Lin Wang

We study the influence of nuclei-induced frequency focusing on the mode locking of spin coherence in quantum dots subjected to a periodic train of optical pulses. In particular, we address the question whether or not nuclei-induced…

介观与纳米尺度物理 · 物理学 2020-09-09 Philipp Schering , Philipp W. Scherer , Götz S. Uhrig

One of solution-state Nuclear Magnetic Resonance (NMR)'s main weaknesses, is its relative insensitivity. J-driven Dynamic Nuclear Polarization (JDNP) was recently proposed for enhancing the sensitivity of solution-state NMR, by bypassing…

化学物理 · 物理学 2023-08-07 Maria Grazia Concilio , Lucio Frydman

Photoluminescence polarization is experimentally studied for samples with (In,Ga)As/GaAs selfassembled quantum dots in transverse magnetic field (Hanle effect) under slow modulation of the excitation light polarization from fractions of Hz…

介观与纳米尺度物理 · 物理学 2017-04-26 M. S. Kuznetsova , R. V. Cherbunin , I. Ya. Gerlovin , I. V. Ignatiev , S. Yu. Verbin , D. R. Yakovlev , D. Reuter , A. D. Wieck , M. Bayer

Nucleon transfer reactions in low-energy deuteron-deuteron scattering are described by solving exact four-particle equations in momentum space. The Coulomb interaction between the protons is included using the screening and renormalization…

核理论 · 物理学 2011-08-23 A. Deltuva , A. C. Fonseca

We propose a practical implementation of a two-qubit entanglement engine which denotes a scheme to generate quantum correlations through purely dissipative processes. On a diamond platform, the electron spin transitions of two…

Dynamic nuclear polarization via contact with electronic spins has emerged as an attractive route to enhance the sensitivity of nuclear magnetic resonance (NMR) beyond the traditional limits imposed by magnetic field strength and…

The photoluminescence polarizations of (In,Ga)As/GaAs quantum dots annealed at different temperatures are studied as a function of external magnetic field (Hanle curves). In these dependencies, remarkable resonant features appear due to…

Dynamic nuclear polarization (DNP) using the boron vacancy ($\mathrm{V_B^-}$) in hexagonal boron nitride (hBN) has gained increasing attention. Understanding this DNP requires systematically investigating the optically detected magnetic…

The interplay between disorder and transport is a problem central to the understanding of a broad range of physical processes, most notably the ability of a system to reach thermal equilibrium. Disorder and many body interactions are known…

Nuclear spin polarization can be pumped into spin-blocked quantum dots by multiple Landau- Zener passages through singlet-triplet anticrossings. By numerical simulations of realistic systems including approximately $10^7$ nuclear spins…

介观与纳米尺度物理 · 物理学 2015-06-05 Arne Brataas , Emmanuel I. Rashba

Si nanoparticles (NPs) have been actively developed as a hyperpolarized magnetic resonance imaging (MRI) contrast agent with an imaging window close to one hour. However, the progress in the development of NPs has been hampered by the…

We propose a new method for dynamic nuclear polarisation in a quasi one-dimensional quantum wire utilising the spin-orbit interaction, the hyperfine interaction, and a finite source-drain potential difference. In contrast with current…

介观与纳米尺度物理 · 物理学 2008-03-05 V. Tripathi , A. C. H. Cheung , N. R. Cooper

Most of dynamic nuclear polarization (DNP) has been requiring helium cryogenics and strong magnetic fields for a high degree of polarization. In this work, we instead demonstrate an optical hyperpolarization of naturally abundant $^{13}$C…

Optical and electrical control of the nuclear spin system allows enhancing the sensitivity of NMR applications and spin-based information storage and processing. Dynamic nuclear polarization in semiconductors is commonly achieved in the…

介观与纳米尺度物理 · 物理学 2014-09-09 G. Sallen , S. Kunz , T. Amand , L. Bouet , T. Kuroda , T. Mano , D. Paget , O. Krebs , X. Marie , K. Sakoda , B. Urbaszek

We use field-cycling-assisted dynamic nuclear polarization and continuous radio-frequency (RF) driving over a broad spectral range to demonstrate magnetic-field-dependent activation of nuclear spin transport from strongly-hyperfine-coupled…

The hyperfine interaction between the spins of electrons and nuclei is both a blessing and a curse. It can provide a wealth of information when used as an experimental probing technique but it can also be destructive when it acts as a…

The influence of the core polarization on the effective nuclear interaction of asymmetric nuclear matter is calculated in the framework of the induced interaction theory. The strong isospin dependence of the density and spin density…

核理论 · 物理学 2016-05-25 S. S. Zhang , L. G. Cao , U. Lombardo , P. Schuck

Photoinduced force microscopy (PiFM) enables nanoscale visualization of optical responses by directly detecting photoinduced forces without relying on luminescence. In molecular assemblies, intermolecular polarization coupling can generate…

光学 · 物理学 2026-05-21 Masayoshi Fujii , Mamoru Tamura , Hidemasa Yamane , Hajime Ishihara