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Permanent electric dipole moments (EDMs) of fundamental particles such as the electron are signatures of parity and time-reversal violation due to physics beyond the standard model. EDM measurements probe new physics at energy scales well…

Atomic Physics · Physics 2020-10-09 Mohit Verma , Andrew M. Jayich , Amar C. Vutha

We investigate the spin-resolved electron dynamics in a double quantum dot driven by ultrafast asymmetric electromagnetic pulses. Using a analytical model we show that applying an appropriate pulse sequence allows to control coherently the…

Mesoscale and Nanoscale Physics · Physics 2017-02-15 J. Waetzel , A. S. Moskalenko , J. Berakdar

We report a measurement of the spin-echo decay of a single electron spin confined in a semiconductor quantum dot. When we tip the spin in the transverse plane via a magnetic field burst, it dephases in 37 ns due to the Larmor precession…

Mesoscale and Nanoscale Physics · Physics 2009-08-17 F. H. L. Koppens , K. C. Nowack , L. M. K. Vandersypen

Magnetic diffraction in combination with x-ray detected ferromagnetic resonance (DFMR) is a powerful technique for performing time-resolved measurements on individual spin textures. Here, we study the ferromagnetic resonance (FMR) modes of…

Materials Science · Physics 2022-11-11 David M. Burn , Shilei Zhang , Gerrit van der Laan , Thorsten Hesjedal

We demonstrate the electrical detection of pulsed X-band Electron Nuclear Double Resonance (ENDOR) in phosphorus-doped silicon at 5\,K. A pulse sequence analogous to Davies ENDOR in conventional electron spin resonance is used to measure…

Materials Science · Physics 2015-05-20 Felix Hoehne , Lukas Dreher , Hans Huebl , Martin Stutzmann , Martin S. Brandt

The work is devoted to the problem of multiple signals of nuclear spin echoes in magnets, excited by a series of radio-frequency (RF) arbitrary duration pulses exceeding the free induction decay time. The quantum-statistical approach based…

Other Condensed Matter · Physics 2012-06-19 M. D Zviadadze , G. I. Mamniashvili , T. O. Gegechkori , A. M. Akhalkatsi , T. A. Gavasheli

The resonant process of electron-positron pairproduction by an electron in a subcritical magnetic field has been studied when the pair is produced to exited Landau levels. The spin dependency of the process rate has been analyzed. In the…

High Energy Physics - Phenomenology · Physics 2017-02-14 O. Novak

The possibility to detect circumbinary planets and to study stellar magnetic fields through eclipsing time variations (ETVs) in binary stars has sparked an increase of interest in this area of research. We revisit the connection between…

Solar and Stellar Astrophysics · Physics 2022-07-20 Felipe H. Navarrete , Petri J. Käpylä , Dominik R. G. Schleicher , Carolina A. Ortiz , Robi Banerjee

We study the switching behavior of two spin-crossover molecules residing in a nanojunction device consisting of two closely spaced gold electrodes. The spin states are monitored through a real-time measurement of the resistance of the…

Mesoscale and Nanoscale Physics · Physics 2021-09-29 Philipp Stegmann , Alex Gee , Neil T. Kemp , Jürgen König

Electron paramagnetic resonance (EPR) performed with a scanning tunneling microscope (STM) allows for probing the spin excitation of single atomic species with MHz energy resolution. One of the basic applications of conventional EPR is the…

Mesoscale and Nanoscale Physics · Physics 2021-11-10 Tom S. Seifert , Stepan Kovarik , Pietro Gambardella , Sebastian Stepanow

The non-perturbative electron-positron pair production in time-dependent electric fields is investigated. The quantum kinetic formalism is employed in order to calculate the electron density for various field configurations. The…

High Energy Physics - Phenomenology · Physics 2012-12-06 Christian Kohlfürst

Several microscopic pathways have been proposed to explain the large magnetic effects observed in organic semiconductors, but identifying and characterising which microscopic process actually influences the overall magnetic field response…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 T. L. Keevers , W. J. Baker , D. R. McCamey

Experimental and theoretical studies of all-optical spin pump and probe of resident electrons in CdTe/(Cd,Mg)Te semiconductor quantum wells are reported. A two-color Hanle-MOKE technique (based on continuous-wave excitation) and…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 G. V. Astakhov , M. M. Glazov , D. R. Yakovlev , E. A. Zhukov , W. Ossau , L. W. Molenkamp , M. Bayer

We develop an efficient package for the simulation of nuclear magnetic resonance spin echo experiments to study the effects of strong electronic spin correlations on the dynamics of the nuclear spin ensemble. A mean-field model is used to…

Strongly Correlated Electrons · Physics 2026-02-09 Charles Snider , Stephen Carr , D. E. Feldman , Chandrasekhar Ramanathan , V. F. Mitrović

We report on a novel dynamical phenomenon in electron spin resonance experiments of phosphorus donors. When strongly coupling the paramagnetic ensemble to a superconducting lumped element resonator, the coherent exchange between these two…

Mesoscale and Nanoscale Physics · Physics 2020-09-30 Stefan Weichselbaumer , Matthias Zens , Christoph W. Zollitsch , Martin S. Brandt , Stefan Rotter , Rudolf Gross , Hans Huebl

Production of electron-positron pairs in two oscillating strong electric field pulses with largely different frequencies and durations is considered. In a first scenario, the influence of a low-frequency background field on pair production…

Atomic Physics · Physics 2023-05-31 N. Folkerts , J. Putzer , S. Villalba-Chávez , C. Müller

Solid-state NMR have been long used to probe atomic distances between nearby nuclear spins by virtue of the dipolar interaction. New technological advances have enabled simultaneous tuning of the radio-frequency resonance circuits to nuclei…

Chemical Physics · Physics 2020-10-28 Maria Makrinich , Mordechai Sambol , Amir Goldbourt

We study the ac charge and -spin transport through an orbital of a magnetic molecule with spin precessing in a constant magnetic field. We assume that the source and drain contacts have time-dependent chemical potentials. We employ the…

Mesoscale and Nanoscale Physics · Physics 2018-02-26 Milena Filipović , Wolfgang Belzig

Magnetically coupling a nano-mechanical resonator to a double quantum dot confining two electrons can enable the manipulation of a single electron spin and the readout of the resonator's natural frequency. When the Larmor frequency matches…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 N. Lambert , I. Mahboob , M. Pioro-Ladrière , Y. Tokura , S. Tarucha , H. Yamaguchi

The rapidly rising fields of spintronics and quantum information science have led to a strong interest in developing the ability to coherently manipulate electron spins. Electron spin resonance (ESR) is a powerful technique to manipulate…

Materials Science · Physics 2009-11-13 M. Pioro-Ladriere , T. Obata , Y. Tokura , Y. -S. Shin , T. Kubo , K. Yoshida , T. Taniyama , S. Tarucha