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Related papers: $g$-factor engineering with InAsSb alloys toward z…

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We utilize the van de Pauw technique combined with Density Functional Theory to show that an external voltage applied to superconducting AlB2-type compounds, such as MgB2 and Mg(B1.9C0.1), effects substantive changes in transition…

Superconductivity · Physics 2022-04-04 Jose A. Alarco , Mahboobeh Shahbazi , Ian D. R. Mackinnon

One of severe limits of graphene nanoribbons (GNRs) in future applications is that zigzag GNRs (ZGNRs) are gapless, so cannot be used in field effect transistors (FETs). In this paper, using tight-binding approach and first principles…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 Aihua Zhang , Yihong Wu , San-Huang Ke , Yuan Ping Feng , Chun Zhang

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

The structural, electronic, dielectric and vibrational properties of zinc-blende (ZB) InAs were studied within the framework of density functional theory (DFT) by employing local density approximation and norm-conserving pseudopotentials.…

Computational Physics · Physics 2021-02-03 Waqas Mahmood , Arfan Bukhtiar , Muhammad Haroon , Bing Dong

The inverted band structure discovered in InAs/GaSb quantum well (QW) is found to host the topological quantum spin Hall (QSH) states. A QSH insulator hosts counterpropagating spin-polarized edge states that are protected by the…

Mesoscale and Nanoscale Physics · Physics 2022-08-30 Sushmita Saha , Alestin Mawrie

We report a large g-factor tunability of a single hole spin in an InGaAs quantum dot via an electric field. The magnetic field lies in the in-plane direction x, the direction required for a coherent hole spin. The electrical field lies…

We investigate the integer quantum Hall effect in Cd3As2 thin films under conditions of strong to moderate quantum confinement (thicknesses of 10 nm, 12 nm, 15 nm). In all the films, we observe the integer quantum Hall effect in the…

Mesoscale and Nanoscale Physics · Physics 2022-11-23 Run Xiao , Junyi Zhang , Juan Chamorro , Jinwoong Kim , Tyrel M. McQueen , David Vanderbilt , Morteza Kayyalha , Yi Li , Nitin Samarth

We present a review of experimental and theoretical studies of the spin response of charge carriers to an external magnetic field in bulk semiconductors and semiconductor nanostructures. The linear response is quantitatively characterized…

Materials Science · Physics 2025-11-06 A. V. Rodina , M. A. Semina , E. L. Ivchenko

A zero-gap state (ZGS) has been found in a bulk system of two-dimensional organic conductor, $\alpha$-(BEDT-TTF)$_2$I$_3$ salt which consists of four sites of donor molecules in a unit cell. In the present paper, the characteristic of the…

Strongly Correlated Electrons · Physics 2009-11-13 Shinya Katayama , Akito Kobayashi , Yoshikazu Suzumura

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

Alloying stands out as a pivotal technological method employed across various compounds, be they metallic, magnetic, or semiconducting, serving to fine-tune their properties to meet specific requirements. Ternary semiconductors represent a…

We perform hybrid functional and quasi-particle band structure calculations with spin-orbit interaction to investigate the band structures of Mg2Si, Mg2Ge, and Mg2Sn. For all Mg2X materials, where X = Si, Ge, and Sn, the characteristics of…

Materials Science · Physics 2019-07-24 Byungki Ryu , Sungjin Park , Eun-Ae Choi , Johannes de Boor , Pawel Ziolkowski , Jaywan Chung , SuDong Park

We extend the range of quantum dot (QD) emission energies where electron and hole $g$ factors have been measured to the practically important telecom range. The spin dynamics in InAs/In$_{0.53}$Al$_{0.24}$Ga$_{0.23}$As self-assembled QDs…

Mesoscale and Nanoscale Physics · Physics 2015-10-09 V. V. Belykh , A. Greilich , D. R. Yakovlev , M. Yacob , J. P. Reithmaier , M. Benyoucef , M. Bayer

We investigate the possibility of measuring magnetic field strength in G-band bright points through the analysis of Zeeman polarization in molecular CH lines. To this end we solve the equations of polarized radiative transfer in the G band…

Astrophysics · Physics 2009-11-10 H. Uitenbroek , E. Miller-Ricci , A. Asensio Ramos , J. Trujillo Bueno

An asymptotic corrected exchange hole potential analogous to Becke-Roussel [A. D. Becke and M. R. Roussel, Phys. Rev. A 39, 3761 (1989)] is constructed by modeling the exchange hole using the generalized coordinate transformation based on…

Materials Science · Physics 2017-07-05 Subrata Jana , Hemanadhan Myneni , Prasanjit Samal

The renormalization of the band structure at zero temperature due to electron-phonon coupling is investigated in diamond, BN, LiF and MgO crystals. We implement a dynamical scheme to compute the frequency-dependent self-energy and the…

Spin qubits composed of either one or three electrons are realized in a quantum dot formed at a Si/SiO_2-interface in isotopically enriched silicon. Using pulsed electron spin resonance, we perform coherent control of both types of qubits,…

Mesoscale and Nanoscale Physics · Physics 2015-11-11 M. Veldhorst , R. Ruskov , C. H. Yang , J. C. C. Hwang , F. E. Hudson , M. E. Flatté , C. Tahan , K. M. Itoh , A. Morello , A. S. Dzurak

We study the interplay of electron and photon spin in non-reciprocal materials. Traditionally, the primary mechanism to design non-reciprocal photonic devices has been magnetic fields in conjunction with magnetic oxides, such as iron…

Applied Physics · Physics 2020-01-22 Parijat Sengupta , Chinmay Khandekar , Todd Van Mechelen , Rajib Rahman , Zubin Jacob

New scheme of definition of g-factors as ground as excited optical states of a paramagnetic ion in zero external constant magnetic field has been proposed and experimentally realized in optical systems in which Zeeman Effect is manifested.…

Materials Science · Physics 2014-12-30 V. N. Lisin , A. M. Shegeda , V. V. Samartsev

We demonstrated the cancellation of the external magnetic field by the nuclear field at one edge of the nuclear polarization bistability in single InAlAs quantum dots. The cancellation for the electron Zeeman splitting gives the precise…

Materials Science · Physics 2009-11-13 R. Kaji , S. Adachi , H. Sasakura , S. Muto
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