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Spin polarized states in neutron matter at strong magnetic fields up to $10^{18}$ G are considered in the model with the Skyrme effective interaction. Analyzing the self-consistent equations at zero temperature, it is shown that a…

Nuclear Theory · Physics 2011-04-07 A. A. Isayev , J. Yang

We introduce a new type of binary magnonic crystal, where Ni$_{80}$Fe$_{20}$ nanodots of two different sizes are diagonally connected forming a unit and those units are arranged in a square lattice. The magnetization dynamics of the sample…

Mesoscale and Nanoscale Physics · Physics 2020-02-26 Nikita Porwal , Koustuv Dutta , Sucheta Mondal , Samiran Choudhury , Jaivardhan Sinha , Anjan Barman , P. K. Datta

We present our first experimental determination of the magnetic noise of a superspinglass made of < 1 pico-liter frozen ferrofluid. The measurements were performed with a local magnetic field sensor based on Hall microprobes operated with…

Disordered Systems and Neural Networks · Physics 2016-09-08 K. Komatsu , D. L'Hote , S. Nakamae , F. Ladieu , V. Mosser , A. Kerlain , M. Konczykowski , E. Dubois , V. Dupuis , R. Perzynski

Experimental investigation of nuclear spin effects on the electron spin polarization in singly negatively charged InP quantum dots is reported. Pump-probe photoluminescence measurements of electron spin relaxation in the microsecond…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Bipul Pal , Sergey Yu. Verbin , Ivan V. Ignatiev , Michio Ikezawa , Yasuaki Masumoto

Magnetic spin resonance is a key non-invasive sensing and imaging technique across the life-, material- and fundamental sciences with further medical and commercial applications. Recent advances using paramagnetic color centers enable…

Mesoscale and Nanoscale Physics · Physics 2018-07-24 Florestan Ziem , Marwa Garsi , Helmut Fedder , Jörg Wrachtrup

We report the observation of nuclear magnetic resonance (NMR) in a ferromagnet-semiconductor heterostructure in the presence of a spin-polarized current. Spin-polarized electrons injected from a metallic ferromagnet generate a large nuclear…

Condensed Matter · Physics 2009-11-10 J. Strand , B. D. Schultz , A. F. Isakovic , X. Lou , C. J. Palmstrom , P. A. Crowell

We study the dynamics of optically-induced nuclear spin polarization in a fluorine-doped ZnSe epilayer via time-resolved Kerr rotation. The nuclear polarization in the vicinity of a fluorine donor is induced by interaction with coherently…

Mesoscale and Nanoscale Physics · Physics 2016-02-24 F. Heisterkamp , E. Kirstein , A. Greilich , E. A. Zhukov , T. Kazimierczuk , D. R. Yakovlev , A. Pawlis , M. Bayer

We propose the magnetoplasmon resonance technique to investigate two-dimensional superconductors (taking MoS$_2$ as an example) in the fluctuating regime, where the temperature is slightly above the critical temperature of the…

Mesoscale and Nanoscale Physics · Physics 2021-04-29 K. Sonowal , V. M Kovalev , I. G Savenko

We have observed multi-photon resonances in a system with a spin 3/2 irradiated simultaneously by a multiple pulse radiofrequency sequence and a low frequency field swept in the range 0-80 kHz. The used excitation scheme allowed us to…

Materials Science · Physics 2015-06-24 G. B. Furman , G. E Kibrik , A. Yu. Polyakov

119Sn nuclear magnetic resonance (NMR) spectra and spin-lattice relaxation rate (1/T1) in SnO2 nanoparticles were measured as a function of temperature and compared with those of SnO2 bulk sample. A 15% loss of 119Sn NMR signal intensity…

Materials Science · Physics 2011-12-09 Tusharkanti Dey , P. Khuntia , A. V. Mahajan , Nitesh Kumar , A. Sundaresan

Storing and accessing information in atomic-scale magnets requires magnetic imaging techniques with single-atom resolution. Here, we show simultaneous detection of the spin-polarization and exchange force, with or without the flow of…

Mesoscale and Nanoscale Physics · Physics 2017-08-16 Nadine Hauptmann , Jan W. Gerritsen , Daniel Wegner , Alexander A. Khajetoorians

Spatially nonhomogeneously spin polarized nuclei are proposed as a new mechanism to monitor electron states in a nanostructure, or as a means to createn and, if necessary, reshape such nanostructures in the course of the experiment. We…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 V. Fleurov , V. A. Ivanov , F. M. Peeters , I. D. Vagner

By Faraday-rotation fluctuation spectroscopy one measures the spin noise via Faraday-induced fluctuations of the polarization plane of a laser transmitting the sample. In the fist part of this paper, we present a theoretical model of recent…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Matthias Braun , Jürgen König

Spin-polarized current effect is studied on the static and dynamic magnetization of the antiferromagnet in a ferromagnet - antiferromagnet nanojunction. The macrospin approximation is generalized to antiferromagnets. Canted…

Materials Science · Physics 2011-12-13 E. M. Epshtein , Yu. V. Gulyaev , P. E. Zilberman

Transport through spin-blockaded quantum dots provides a means for electrical control and detection of nuclear spin dynamics in the host material. Although such experiments have become increasingly popular in recent years, interpretation of…

Mesoscale and Nanoscale Physics · Physics 2011-08-22 M. S. Rudner , F. H. L. Koppens , J. A. Folk , L. M. K. Vandersypen , L. S. Levitov

We demonstrate the suppression of nuclear spin fluctuations in an InAs quantum dot and measure the timescales of the spin narrowing effect. By initializing for tens of milliseconds with two continuous wave diode lasers, fluctuations of the…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 Bo Sun , Colin Ming Earn Chow , Duncan G. Steel , Allan S. Bracker , Daniel Gammon , L. J. Sham

"Spin noise spectroscopy" (SNS) is a powerful optical technique for probing electron and hole spin dynamics that is based on detecting their intrinsic and random fluctuations while in thermal equilibrium, an approach guaranteed by the…

Mesoscale and Nanoscale Physics · Physics 2015-06-22 Luyi Yang , P. Glasenapp , A. Greilich , D. R. Yakovlev , M. Bayer , S. A. Crooker

We investigate parity and time-reversal violation in neutron-proton scattering in the optical regime. We calculate the neutron spin rotation and analyzing power in scattering on polarized protons. This allows us to quantify the sensitivity…

Nuclear Theory · Physics 2008-11-26 C. -P. Liu , R. G. E. Timmermans

Low thermal polarization of nuclear spins is a primary sensitivity limitation for nuclear magnetic resonance. Here we demonstrate optically pumped (microwave-free) nuclear spin polarization of $^{13}\mathrm{C}$ and $^{15}\mathrm{N}$ in…

Mesoscale and Nanoscale Physics · Physics 2017-08-09 Ben L. Green , Ben G. Breeze , Gregory J. Rees , John V. Hanna , Jyh-Pin Chou , Viktor Ivády , Adam Gali , Mark E. Newton

We study the ground state quantum fragmentation in a mixture of a polar condensate and a ferromagnetic condensate when subject to an external magnetic field. We pay more attentions to the polar condensate and find that it will be less…

Quantum Gases · Physics 2015-06-23 Jie Zhang , Xue Hou , Bin Chen , Yunbo Zhang
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