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Browsing by Author "Obermeier G."

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A spin valve core structure based on the fulde-ferrell larkin-ovchinnikov like state: Studies on bilayers and trilayers of superconductors and ferromagnets

Zdravkov V.; Kehrle J.; Obermeier G.; Müller C.; Lenk D.; Morari R.; Sidorenko A.; Horn S.; Tidecks R.; Tagirov L. (2012)

Interference effects of the superconducting pairing wave function in thin film bilayers of Nb as a superconductor (S) and Cu41Ni59 as ferromagnetic (F) material lead to critical temperature oscillations and reentrant ...
Charge order in NaV2O5 studied by EPR

Lohmann M.; Krug Von Nidda H.; Eremin M.; Loidl A.; Obermeier G.; Horn S. (2000)

An exponential decrease in magnetic susceptibility in NaV2O5 is investigated using electron-paramagnetic resonance (EPR) measurements. Results show that with decreasing temperature, a quarter-filled ladder with strong ...
Critical temperature oscillations and reentrant superconductivity due to the FFLO like state in F/S/F trilayers

Kehrle J.; Zdravkov V.; Obermeier G.; Garcia-Garcia J.; Ullrich A.; Müller C.; Morari R.; Sidorenko A.; Horn S.; Tagirov L.; Tidecks R. (2012)

Ferromagnet/Superconductor/Ferromagnet (F/S/F) trilayers, in which the establishing of a Fulde-Ferrell Larkin-Ovchinnikov (FFLO) like state leads to interference effects of the superconducting pairing wave function, form ...
Double re-entrance of superconductivity in superconductor/ferromagnet bilayers

Sidorenko A.; Zdravkov V.; Kehrle J.; Morari R.; Obermeier G.; Gsell S.; Schreck M.; Müller C.; Ryazanov V.; Horn S.; Tagirov L.; Tidecks R. (2009)

We report on the first observation of a double suppression of superconductivity in a superconductor/ferromagnet layered system. The result was obtained using a superconductor/ferromagnetic-alloy bilayer of Nb/Cu 41Ni59 ...
Experimental observation of the triplet spin-valve effect in a superconductor-ferromagnet heterostructure

Zdravkov V.; Kehrle J.; Obermeier G.; Lenk D.; Krug Von Nidda H.; Müller C.; Kupriyanov M.; Sidorenko A.; Horn S.; Tidecks R.; Tagirov L. (2013)

The theory of superconductor-ferromagnet heterostructures with two ferromagnetic layers predicts the generation of a long-range, odd-in-frequency triplet pairing at noncollinear alignment (NCA) of the magnetizations of the ...
Full-switching FSF-type superconducting spin-triplet magnetic random access memory element

Lenk D.; Morari R.; Zdravkov V.; Ullrich A.; Khaydukov Y.; Obermeier G.; Müller C.; Sidorenko A.; Von Nidda H.; Horn S.; Tagirov L.; Tidecks R. (2017)

© 2017 American Physical Society. In the present work a superconducting Co/CoOx/Cu41Ni59/Nb/Cu41Ni59 nanoscale thin film heterostructure is investigated, which exhibits a superconducting transition temperature, Tc, depending ...
Interference effects of the superconducting pairing wavefunction due to the Fulde-Ferrell-Larkin-Ovchinnikov like state in ferromagnet/superconductor bilayers

Zdravkov V.; Kehrle J.; Obermeier G.; Ullrich A.; Gsell S.; Lenk D.; Müller C.; Morari R.; Sidorenko A.; Ryazanov V.; Tagirov L.; Tidecks R.; Horn S. (2011)

The theoretical description of the Fulde-Ferrell-Larkin-Ovchinnikov like state establishing in nanostructured bilayers of ferromagnetic (F) and superconducting (S) material leads to critical temperature oscillations and ...
Memory effect and triplet pairing generation in the superconducting exchange biased Co/CoOx/Cu41Ni59/Nb/Cu 41Ni59 layered heterostructure

Zdravkov V.; Lenk D.; Morari R.; Ullrich A.; Obermeier G.; Müller C.; Krug Von Nidda H.; Sidorenko A.; Horn S.; Tidecks R.; Tagirov L. (2013)

We fabricated a nanolayered hybrid superconductor-ferromagnet spin-valve structure, the resistive state of which depends on the preceding magnetic field polarity. The effect is based on a strong exchange bias (about -2 ...
Quasi-one-dimensional Fulde-Ferrell-Larkin-Ovchinnikov-like state in Nb/Cu0.41Ni0.59 bilayers

Sidorenko A.; Zdravkov V.; Kehrle J.; Morari R.; Obermeier G.; Gsell S.; Schreck M.; Müller C.; Kupriyanov M.; Ryazanov V.; Horn S.; Tagirov L.; Tidecks R. (2009)

In a ferromagnet (F) being in contact with a superconductor (S) an unconventional finite-momentum pairing of electrons forming Cooper pairs occurs. As a consequence, interference effects of the pairing wave function, leading ...
Reentrant superconductivity and superconducting critical temperature oscillations in F/S/F trilayers of Cu41Ni59/Nb/Cu 41Ni59 grown on cobalt oxide

Zdravkov V.; Kehrle J.; Lenk D.; Obermeier G.; Ullrich A.; Müller C.; Krug Von Nidda H.; Morari R.; Sidorenko A.; Tagirov L.; Horn S.; Tidecks R. (2013)

Ferromagnet/Superconductor/Ferromagnet (F/S/F) trilayers constitute the core of a superconducting spin valve. The switching effect of the spin valve is based on interference phenomena occurring due to the proximity effect ...
Reentrant superconductivity in Nb/Cu1-xNix bilayers

Zdravkov V.; Sidorenko A.; Obermeier G.; Gsell S.; Schreck M.; Müller C.; Horn S.; Tidecks R.; Tagirov L. (2006)

We report on the first observation of a pronounced reentrant superconductivity phenomenon in a superconductor/ferromagnet layered system. The results were obtained using a superconductor/ferromagnetic-alloy bilayer of ...
Reentrant superconductivity in superconductor-ferromagnetic-alloy bilayers

Zdravkov V.; Sidorenko A.; Obermeier G.; Gsell S.; Schreck M.; Müller C.; Ryazanov V.; Horn S.; Tidecks R.; Tagirov L.; Kupriyanov M. (2008)

Oscillating behavior of superconductivity in ultrathin bilayers of niobium and ferromagnetic alloy Cu41Ni59 has been observed. This phenomenon was most pronounced at a Nb layer thickness of about 7.3 nm: the superconducting ...
Reentrant superconductivity in superconductor/ferromagnetic-alloy bilayers

Zdravkov V.; Kehrle J.; Obermeier G.; Gsell S.; Schreck M.; Müller C.; Krug Von Nidda H.; Lindner J.; Moosburger-Will J.; Nold E.; Morari R.; Ryazanov V.; Sidorenko A.; Horn S.; Tidecks R.; Tagirov L. (2010)

We studied the Fulde-Ferrell-Larkin-Ovchinnikov-type state established due to the proximity effect in superconducting Nb/ Cu41 Ni59 bilayers. Using a special wedge-type deposition technique, series of 20-35 samples could ...
Thickness dependence of the triplet spin-valve effect in superconductor-ferromagnet-ferromagnet heterostructures

Lenk D.; Zdravkov V.; Kehrle J.; Obermeier G.; Ullrich A.; Morari R.; von Nidda H.; Müller C.; Kupriyanov M.; Sidorenko A.; Horn S.; Deminov R.; Tagirov L.; Tidecks R. (2016)

© 2016 Lenk et al.Background: In nanoscale layered S/F1/N/F2/AF heterostructures, the generation of a long-range, odd-in-frequency spin-projection one triplet component of superconductivity, arising at non-collinear alignment ...
Unconventional anisotropic superexchange in α′-NaV2O5

Eremin M.; Zakharov D.; Eremina R.; Deisenhofer J.; Krug Von Nidda H.; Obermeier G.; Horn S.; Loidl A. (2006)

The strong line broadening observed in electron spin resonance on NaV2O5 is found to originate from an unusual type of the symmetric anisotropic exchange interaction with simultaneous spin-orbit coupling on both sites. The ...

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Browsing by Author "Obermeier G."

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