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Related papers: Measuring hole g-factor anisotropies using transve…

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We reveal the existence of a large in-plane heavy-hole $g$ factor in symmetric self-assembled (001) (In,Ga)As/GaAs quantum dots due to warping of valence band states. This warping dominates over the well-established mechanism associated…

Many modern spin-based devices rely on the spin-orbit interaction, which is highly sensitive to the host semiconductor heterostructure and varies substantially depending on crystal direction, crystal asymmetry (Dresselhaus), and quantum…

Mesoscale and Nanoscale Physics · Physics 2022-11-08 Karina Hudson , Ashwin Srinivasan , Dmitry Miserev , Qingwen Wang , Oleh Klochan , Oleg Sushkov , Ian Farrer , David Ritchie , Alex Hamilton

There has been a surge of recent interest in the role of anisotropy in interaction-induced phenomena in two-dimensional (2D) charged carrier systems. A fundamental question is how an anisotropy in the energy-band structure of the carriers…

Mesoscale and Nanoscale Physics · Physics 2017-07-12 Insun Jo , K. A. Villegas Rosales , M. A. Mueed , L. N. Pfeiffer , K. W. West , K. W. Baldwin , R. Winkler , Medini Padmanabhan , M. Shayegan

The aim of this paper is to present the definition of complexity for static self-gravitating anisotropic matter proposed in $f(G,T)$ theory, where $G$ is the Gauss-Bonnet term and $T$ is the trace of energy momentum tensor. We evaluate…

General Physics · Physics 2021-08-30 Z. Yousaf , Kazuharu Bamba , M. Z. Bhatti , K. Hassan

Low-temperature electrical conductance spectroscopy measurements of quantum point contacts implemented in p-type GaAs/AlGaAs heterostructures are used to study the Zeeman splitting of 1D subbands for both in-plane and out-of-plane magnetic…

Mesoscale and Nanoscale Physics · Physics 2013-06-05 Y. Komijani , M. Csontos , I. Shorubalko , U. Zuelicke , T. Ihn , K. Ensslin , D. Reuter , A. D. Wieck

The effective g-factor of 2D holes in modulation doped \mbox{p-SiGe/Ge/SiGe} structures was studied. The AC conductivity of samples with hole densities from $3.9 \times 10^{11}$~to $6.2 \times 10^{11}~\text{cm}^{-2}$ was measured in…

Mesoscale and Nanoscale Physics · Physics 2018-05-09 I. L. Drichko , A. A. Dmitriev , V. A. Malysh , I. Yu. Smirnov , H. von Känel , M. Kummer , D. Chrastina , G. Isella

An electric method for measuring magnetic anisotropy in antiferromagnetic insulators (AFIs) is proposed. When a metallic film with strong spin-orbit interactions, e.g., platinum (Pt), is deposited on an AFI, its resistance should be…

Materials Science · Physics 2017-09-06 Hua Wang , Dazhi Hou , Zhiyong Qiu , Takashi Kikkawa , Eiji Saitoh , Xiaofeng Jin

We address the problem of electronic and nuclear spin resonance of an individual atom on a surface driven by a scanning tunnelling microscope. Several mechanisms have been proposed so far, some of them based on the modulation of exchange…

Mesoscale and Nanoscale Physics · Physics 2019-12-25 Alejandro Ferrón , Santiago A. Rodríguez , Sergio S. Gómez , Jose L. Lado , Joaquín Fernández-Rossier

We study the effects of magnetic and electric fields on the g-factors of spins confined in a two-electron InAs nanowire double quantum dot. Spin sensitive measurements are performed by monitoring the leakage current in the Pauli blockade…

Mesoscale and Nanoscale Physics · Physics 2013-07-24 M. D. Schroer , K. D. Petersson , M. Jung , J. R. Petta

We studied low temperature (T=50mK) in-plane magnetoresistance of a dilute two-dimensional hole system in GaAs/AlGaAs heterostructure that exhibits an apparent metal-insulator transition. We found an anisotropic magnetoresistance, which…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 H. Noh , Jongsoo Yoon , D. C. Tsui , M. Shayegan

We use the two-pulse spin-dependent photon echo technique to study the in-plane hole spin anisotropy in a 20~nm-thick CdTe/Cd$_{0.76}$Mg$_{0.24}$Te single quantum well by exciting the donor-bound exciton resonance. We take advantage of the…

Mesoscale and Nanoscale Physics · Physics 2020-05-20 S. V. Poltavtsev , I. A. Yugova , A. N. Kosarev , D. R. Yakovlev , G. Karczewski , S. Chusnutdinow , T. Wojtowicz , I. A. Akimov , M. Bayer

We present an experimental study of macroscopic and microscopic magnetic anisotropy of a spin tetramer system \cso using torque magnetometry and ESR spectroscopy. Large rotation of macroscopic magnetic axes with temperature observed from…

Strongly Correlated Electrons · Physics 2016-08-08 Mirta Herak , Dijana Žilić , Dubravka Matković Čalogović , Helmuth Berger

We have determined the Land\'e factor g* in self-organized InAs quantum dots using resonant-tunnelling experiments. With the magnetic field applied parallel to the growth direction z we find g*_\parallel = 0.75 for the specific dot…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 J. M. Meyer , I. Hapke-Wurst , U. Zeitler , R. J. Haug , K. Pierz

The interstellar turbulence is magnetized and thus anisotropic. The anisotropy of turbulent magnetic fields and velocities is imprinted in the related observables, rotation measures (RMs), and velocity centroids (VCs). This anisotropy…

Astrophysics of Galaxies · Physics 2021-04-07 Siyao Xu , Yue Hu

Some antiferromagnets under a magnetic field develop magnetization perpendicular to the field as well as more conventional ones parallel to the field. So far, the transverse magnetization (TM) has been attributed to either spin canting…

Mesoscale and Nanoscale Physics · Physics 2024-03-21 Taekoo Oh , Sungjoon Park , Bohm-Jung Yang

In the presence of spin-orbit scattering, the splitting of an energy level in a generic small metal grain due to the Zeeman coupling to a magnetic field B depends on the direction of B, as a result of mesoscopic fluctuations. The anisotropy…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 P. W. Brouwer , X. Waintal , B. I. Halperin

We developed a new technique for measuring the thermodynamic entropy as a function of the magnetic field angle. This technique enables high-resolution angle-resolved measurements of the entropy in an unprecedentedly short measuring time.…

Strongly Correlated Electrons · Physics 2018-06-15 Shunichiro Kittaka , Shota Nakamura , Hiroaki Kadowaki , Hiroshi Takatsu , Toshiro Sakakibara

The ability to tailor the damping factor is essential for spintronic and spin-torque applications. Here, we report an approach to manipulate the damping factor of FeGa/MgO(001) films by oblique deposition. Owing to the defects at the…

Applied Physics · Physics 2019-11-05 Yang Li , Yan Li , Qian Liu , Zhe Yuan , Qing-Feng Zhan , Wei He , Hao-Liang Liu , Ke Xia , Wei Yu , Xiang-Qun Zhang , Zhao-Hua Cheng

The transverse anisotropy constant and the related D\"oring mass density are key parameters of the one-dimensional model to describe the motion of magnetic domain walls. So far, no general framework is available to determine these…

Mesoscale and Nanoscale Physics · Physics 2015-08-12 Felix Büttner , Benjamin Krüger , Stefan Eisebitt , Mathias Kläui

Hole spins have gained considerable interest in the past few years due to their potential for fast electrically controlled qubits. Here, we study holes confined in Ge hut wires, a so far unexplored type of nanostructure. Low temperature…