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Related papers: Enhanced Zeeman splitting in Ga0.25In0.75As quantu…

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We investigate the current-voltage characteristics of a II-VI semiconductor resonant-tunneling diode coupled to a diluted magnetic semiconductor injector. As a result of an external magnetic field, a giant Zeeman splitting develops in the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. Slobodskyy , C. Gould , T. Slobodskyy , G. Schmidt , L. W. Molenkamp , D. Sanchez

In this work we study the properties of a two-subband quasi-two-dimensional electron system in a strong magnetic field when the electron filling factor is equal to four. When the cyclotron energy is close to the intersubband splitting the…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 V. M. Apalkov , M. E. Portnoi

When an electron or hole is in a conduction band of a crystal, it can be very different from 2, depending upon the crystalline anisotropy and the direction of the applied magnetic induction ${\bf B}$. In fact, it can even be 0! To…

Mesoscale and Nanoscale Physics · Physics 2020-12-09 Aiying Zhao , Qiang Gu , Timothy J. Haugan , Richard A. Klemm

An empirical formula is proposed to calculate the Kondo temperature in quantum point contacts from the Zeeman splitting. A similar formula was used in the point-contact spectroscopy (PCS) method to obtain from the Zeeman splitting of the…

Strongly Correlated Electrons · Physics 2007-05-23 V. V. Fisun

Magnetic tuning of the bound exciton states and corresponding giant Zeeman splitting (GZS) between {\sigma}^{+} and {\sigma}^{-} excitonic transitions in CdTe/Cd_{1-x}Mn_{x}Te quantum ring has been investigated in the Faraday configuration…

Mesoscale and Nanoscale Physics · Physics 2023-01-20 Kalpana Panneerselvam , Bhaskaran Muralidharan

Zeeman splitting of quantum-confined states of excitons in InGaAs quantum wells (QWs) is experimentally found to depend strongly on quantization energy. Moreover, it changes sign when the quantization energy increases with a decrease in the…

Mesoscale and Nanoscale Physics · Physics 2016-08-18 P. S. Grigoryev , O. A. Yugov , S. A. Eliseev , Yu. P. Efimov , V. A. Lovtcius , V. V. Petrov , V. F. Sapega , I. V. Ignatiev

We study the Zeeman splitting in induced ballistic 1D quantum wires aligned along the [233] and [011] axes of a high mobility (311)A undoped heterostructure. Our data shows that the g-factor anisotropy for magnetic fields applied along the…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 O. Klochan , A. P. Micolich , L. H. Ho , A. R. Hamilton , K. Muraki , Y. Hirayama

It is known experimentally that at not very large filling factors $\nu$ the quantum Hall conductivity peaks corresponding to the same Landau level number $N$ and two different spin orientations are well separated. These peaks occur at…

Condensed Matter · Physics 2009-10-28 M. M. Fogler , B. I. Shklovskii

A direct observation of the giant Zeeman splitting of the free excitons in (Ga,Fe)N is reported. The magnetooptical and magnetization data imply the ferromagnetic sign and a reduced magnitude of the effective p-d exchange energy governing…

We demonstrate by spin quantum beat spectroscopy that in undoped symmetric (110)-oriented GaAs/AlGaAs single quantum wells even a symmetric spatial envelope wavefunction gives rise to an asymmetric in-plane electron Land\'e-g-factor. The…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 J. Hübner , S. Kunz , S. Oertel , D. Schuh , M. Pochwała , H. T. Duc , J. Förstner , T. Meier , M. Oestreich

A clear signature of Zeeman split states crossing is observed in Landau fan diagram of strained germanium two-dimensional hole gas. The underlying mechanisms are discussed based on a perturbative model yielding a closed formula for the…

Mesoscale and Nanoscale Physics · Physics 2020-10-20 Patrick Del Vecchio , Mario Lodari , Amir Sammak , Giordano Scappucci , Oussama Moutanabbir

We describe the far from equilibrium non-local transport in a diffusive superconducting wire with a Zeeman splitting, taking into account the different spin relaxation mechanisms. We demonstrate that due to the Zeeman splitting an injection…

Superconductivity · Physics 2015-05-20 M. Silaev , P. Virtanen , F. S. Bergeret , T. T. Heikkilä

We have realized an AlAs two-dimensional electron system in which electrons occupy conduction-band valleys with different Fermi contours and effective masses. In the quantum Hall regime, we observe both resistivity spikes and persistent…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 K. Vakili , E. Tutuc , M. Shayegan

Hybrid semiconductor-superconductor quantum dot devices are tunable physical realizations of quantum impurity models for a magnetic impurity in a superconducting host. The binding energy of the localized sub-gap Shiba states is set by the…

Strongly Correlated Electrons · Physics 2017-02-22 Willem-Victor van Gerven Oei , D. Tanaskovic , Rok Zitko

The measurement of Zeeman splitting in spectral lines---both in emission and absorption---can provide direct estimates of the magnetic field strength and direction in atomic and molecular clouds, both in our own Milky Way and in external…

We present a theoretical study of gap opening in the zeroth Landau level in gapped graphene as a result of pseudo-Zeeman interaction. The applied magnetic field couples with the valley pseudospin degree of freedom of the charge carriers…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 M. Tahir , K. Sabeeh

We report magneto-transport measurements on high-mobility two-dimensional electron systems (2DESs) confined in In_0.75Ga_0.25As/In_0.75Al_0.25As single quantum wells. Several quantum Hall states are observed in a wide range of temperatures…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 W. Desrat , F. Giazotto , V. Pellegrini , F. Beltram , F. Capotondi , G. Biasiol , L. Sorba , D. K. Maude

Magnetic field applied to the quantum dot coupled between one metallic and one superconducting electrode can produce a similar effect as has been experimentally observed by Meservey, Tedrow and Fulde [Phys. Rev. Lett. 25, 1270 (1970)] for…

Superconductivity · Physics 2009-11-13 T. Domanski , A. Donabidowicz , K. I. Wysokinski

InSb is one of the promising candidates to realize a topological state through proximity induced superconductivity in a material with strong spin-orbit interactions. In two-dimensional systems, thin barriers are needed to allow strong…

The valence band states confined in infinitely deep quantum dots made of diluted magnetic semiconductors (DMS) are considered theoretically. A complex anisotropic structure of the valence bands in DMSs with cubic symmetry described by the…

Condensed Matter · Physics 2007-05-23 F. V. Kyrychenko , J. Kossut
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