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We theoretically investigate the magneto-optical (MO) properties of monolayer (ML) transition metal dichalcogenides (TMDs) in the presence of external electrical and quantizing magnetic fields and of the proximity-induced exchange…

Mesoscale and Nanoscale Physics · Physics 2024-11-05 Y. Li , Y. M. Xiao , W. Xu , L. Ding , M. V. Milošević , F. M. Peeters

We discuss selection rules and intensities of photocurrent of a two-dimensional electron gas in a strong magnetic field via absorptions of orbital angular momentum carried by obliquely irradiated optical vortex beams. By angular deflection,…

Mesoscale and Nanoscale Physics · Physics 2021-11-19 Hirohisa T. Takahashi , Jun-ichiro Kishine

Optomagnonic systems, where light couples coherently to collective excitations in magnetically ordered solids, are currently of high interest due to their potential for quantum information processing platforms at the nanoscale. Efforts so…

Mesoscale and Nanoscale Physics · Physics 2018-12-12 Jasmin Graf , Hannes Pfeifer , Florian Marquardt , Silvia Viola Kusminskiy

With the increasingly common use of large area PMTs (photomultiplier tubes) for nuclear and particle physics experiments, information on the position dependent magnetic field effects across the PMT's photocathode is important to effectively…

Instrumentation and Detectors · Physics 2015-05-30 T. Koblesky , J. Roloff , C. Polly , J. C. Peng

Effects of coupling between an molecular exciton and a surface plasmon (exciton-plasmon coupling) on the luminescence properties of the molecule and the surface plasmons are investigated using nonequilibrium Green's function method.…

Materials Science · Physics 2013-11-12 Kuniyuki Miwa , Mamoru Sakaue , Hideaki Kasai

Capacitance measurements as a function of voltage, frequency and temperature are useful tools to identify fundamental parameters that affect solar cell operation. Techniques such as capacitance-voltage (CV), Mott-Schottky analysis and…

Applied Physics · Physics 2021-12-23 Sandheep Ravishankar , Zhifa Liu , Uwe Rau , Thomas Kirchartz

We investigate the modification in the optical properties of laser-excited bulk cobalt and nickel using the time-dependent density functional theory at a finite electron temperature. As a result of the first-principles simulation, a complex…

Materials Science · Physics 2022-02-10 Shunsuke A. Sato

We develop an analytical model to describe sub-bandgap optical absorption in two-dimensional semiconducting transition metal dichalcogenide (s-TMD) nanoflakes. The material system represents an array of few-layer molybdenum disulfide…

Mesoscale and Nanoscale Physics · Physics 2016-10-11 Maxim Trushin , Edmund J. R. Kelleher , Tawfique Hasan

The interaction between a high-frequency dilational mode of a thin dielectric film and an optical cavity field is studied theoretically in the membrane-in-the-middle setup. A derivation from first principles leads to a multi-mode…

Mesoscale and Nanoscale Physics · Physics 2015-03-20 K. Borkje , S. M. Girvin

Diverse magnetic and electronic properties of halogen-adsorbed silicene are investigated by the first-principles theoretical framework, including the adatom-diversified geometric structures, the atom-dominated energy bands, the spatial spin…

Materials Science · Physics 2019-03-27 Duy Khanh Nguyen , Ngoc Thanh Thuy Tran , Yu-Huang Chiu , Ming-Fa Lin

We investigate the optical conductivity, along with longitudinal and transverse conductivities, in buckled hexagonal lattice such as silicene subjected to both an in-plane magnetic field and a perpendicular electric field. In this model, we…

Mesoscale and Nanoscale Physics · Physics 2023-12-27 Phusit Nualpijit , Bumned Soodchomshom

We show that opacity of a clean multilayer graphene flake depends on the helicity of the circular polarized electromagnetic radiation. The effect can be understood in terms of the pseudospin selection rules for the interband optical…

Mesoscale and Nanoscale Physics · Physics 2015-03-20 Maxim Trushin , John Schliemann

We introduce a simple but practical method to measure the optical transmission matrix (TM) of complex media. The optical TM of a complex medium is obtained by modulating the wavefront of a beam impinging on the complex medium and imaging…

Optics · Physics 2015-06-23 Jonghee Yoon , KyeoReh Lee , Jongchan Park , YongKeun Park

We investigate theoretically the extension of cavity optomechanics to multiple membrane systems. We describe such a system in terms of the coupling of the collective normal modes of the membrane array to the light fields. We show these…

Quantum Physics · Physics 2009-11-13 M. Bhattacharya , P. Meystre

Time-invariant photonic structures amplify or absorb light based on their intrinsic material gain or loss. The coherent interference of multiple beams in space, e.g., in a resonator, can be exploited to tailor the wave interaction with…

Topological phase engineering of neutral bosons loaded in an optical lattice opens a new window for manipulating of transport phenomena in such systems. Exploiting the Bose Hubbard model and using the magnetic Kubo formula proposed in this…

Quantum Gases · Physics 2015-01-23 A. S. Sajna , T. P. Polak , R. Micnas

Nanostructured magneto-optical materials sustaining optical resonances open very efficient way for light control via magnetic field, which is of prime importance for telecommunication and sensing applications. However, usually their…

We discuss novel features of twisted-light absorption both by hydrogen-like atoms and by micro-particles. First, we extend the treatment of atomic photoexcitation by twisted photons to include atomic recoil, derive generalized quantum…

Quantum Physics · Physics 2014-10-17 Andrei Afanasev , Carl E. Carlson , Asmita Mukherjee

In moir\'e materials with flat electronic bands and suitable quantum geometry, strong correlations can give rise to novel topological states of matter. The nontrivial band topology of twisted molybdenum ditelluride (tMoTe$_2$) --…

We investigate theoretically an angle dependence of enhancement of polar magneto-optical Kerr effect (MOKE) obtained thanks to a deposition of a paramagnetic Diluted Magnetic Semiconductor (DMS) layer on one-dimensional photonic crystal…

Mesoscale and Nanoscale Physics · Physics 2014-12-30 Marcin Koba , Jan Suffczynski