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The 3D- and 2D- behaviour of wide parabolic PbTe single quantum wells, which consist of PbTe p-n-p-structures, are studied theoretically and experimentally. A simple model combines the 2D- subband levels and the 3D-Landau levels in order to…

材料科学 · 物理学 2015-06-25 J. Oswald , G. Heigl , M. Pippan , G. Span , T. Stellberger , D. K. Maude , J. C. Portal

Magnetotransport properties of a pseudomorphic GaAs/Ga0.8In0.2As/Ga0.75Al0.25As heterostructure are investigated in pulsed magnetic fields up to 50 T and at temperatures of T=1.4 K and 4.2 K. The structure studied consists of a Si…

We demonstrate monolayer MoS2 grown by chemical vapor deposition (CVD) with transport properties comparable to those of the best exfoliated devices over a wide range of carrier densities (up to ~10^13 1/cm^2) and temperatures (80-500 K).…

材料科学 · 物理学 2016-12-01 Kirby K. H. Smithe , Chris D. English , Saurabh V. Suryavanshi , Eric Pop

We have measured the zero-bias differential tunneling conductance of InAs/AlSb/GaS b/AlSb/InAs heterostructures at low temperatures (1.7K < T < 60K) and unde r a magnetic field at various angles with the heterostructure's interfaces. Shubni…

介观与纳米尺度物理 · 物理学 2009-10-31 E. M. González , Y. Lin , E. E. Mendez

We have studied an electron transport in inversion layers of high-mobility Si(100) samples. At high electron concentrations and temperatures below 4.2 K, two series of Shubnikov-de Haas oscillations have been observed. The temperature…

凝聚态物理 · 物理学 2009-10-28 S. G. Semenchinsky , L. Smrcka , J. Stehno

Motivated by interesting recent experimental results, we consider theoretically charged-impurity scattering-limited 2D electronic transport in (100), (110), and (111)-Si inversion layers at low temperatures and carrier densities, where…

介观与纳米尺度物理 · 物理学 2013-02-11 E. H. Hwang , S. Das Sarma

The apparent metal-insulator transition is observed in a high quality two-dimensional electron system (2DES) in the strained Si quantum well of a Si/Si_{1-x}Ge_x heterostructure with mobility \mu=1.9 x 10^5 cm^2/Vs at density n=1.45 x…

介观与纳米尺度物理 · 物理学 2007-05-23 K. Lai , W. Pan , D. C. Tsui , S. A. Lyon , M. Muhlberger , F. Schaffler

Transport and thermodynamic properties of a sintered pellet of the newly discovered $MgB_2$ superconductor have been measured to determine the characteristic critical magnetic fields and critical current densities. Both resistive transition…

超导电性 · 物理学 2009-11-07 D. K. Finnemore , J. E. Ostenson , S. L. Bud'ko , G. Lapertot , P. C. Canfield

The transport characteristics of a disordered MoS$_2$ nanoflake in the insulator regime are studied by electrical and magnetotransport measurements. The layered MoS$_2$ nanoflake is exfoliated from a bulk MoS$_2$ crystal and the conductance…

介观与纳米尺度物理 · 物理学 2019-06-11 Jianhong Xue , Shaoyun Huang , Ji-Yin Wang , H. Q. Xu

We investigate theoretically 2D electronic transport in Si:P $\delta$-doped layers limited by charged-dopant scattering. Since the carrier density is approximately equal to the dopant impurity density, the density dependent transport shows…

介观与纳米尺度物理 · 物理学 2013-03-21 E. H. Hwang , S. Das Sarma

We analyze here the behavior near the 2D insulator-superconductor quantum critical point in the presence of a perpendicular magnetic field. We show that with increasing field $H$, the quantum disordered and quantum critical regimes, in…

凝聚态物理 · 物理学 2009-11-07 Denis Dalidovich , Philip Phillips

We investigate the magnetotransport properties of the one-band Hubbard-Holstein model at half-filling in three dimensions (3D) using exact diagonalization based semi-classical Monte Carlo simulations with phonons treated in the adiabatic…

强关联电子 · 物理学 2026-04-21 Sandip Halder , Moshe Schechter

Quantum correlation and hot-carrier transport represent two fundamentally distinct regimes of electronic conduction, rarely accessible within the same device. Here, we report a state-of-the-art monolayer transition metal dichalcogenides…

介观与纳米尺度物理 · 物理学 2025-11-11 Debottam Daw , Houcine Bouzid , Sung-Gyu Lee , Wujoon Cha , Ki Kang Kim , Min-kyu Joo , Yan Wang , Manish Chhowalla , Young Hee Lee

Using nonequilibrium and equilibrium molecular dynamics simulations, we investigate heat conduction in a momentum-conserving mesoscopic fluid modeled by multiparticle collision dynamics. Across quasi-two-dimensional (q-2D) to…

统计力学 · 物理学 2026-04-16 Rongxiang Luo , Jiaqi Wen , Juncheng Guo

We study the magnetotransport in a minimal holographic setup of a metal-insulator transition in two spatial dimensions. Some generic features are obtained without referring to the non-linear details of the holographic theory. The…

高能物理 - 理论 · 物理学 2020-10-28 Yu-Sen An , Teng Ji , Li Li

This paper reports on the observation and analysis of magnetotransport phenomena in the nonlinear differential resistance $r_{xx}=dV_{xx}/dI$ of high-mobility InGaAs/InP and GaAs/AlGaAs Hall bar samples driven by direct current, $\Idc$.…

介观与纳米尺度物理 · 物理学 2012-09-04 S. A. Studenikin , G. Granger , A. Kam , A. S. Sachrajda , Z. R. Wasilewski , P. J. Poole

Two-dimensional electron systems (2DESs) confined to the surface of narrowband semiconductors have attracted great interest since they can easily integrate with superconductivity (or ferromagnetism) enabling new possibilities in hybrid…

介观与纳米尺度物理 · 物理学 2019-01-10 Kaushini Wickramasinghe , William Mayer , Joseph Yuan , Tri Nguyen , Lucy Jiao , Vladimir Manucharyan , Javad Shabani

We study magnetic, transport and thermodynamic properties of the half-filled two-dimensional ($2D$) Hubbard model with layered distributed repulsive interactions using unbiased finite temperature quantum Monte Carlo simulations.…

强关联电子 · 物理学 2017-02-27 Rubem Mondaini , Thereza Paiva

Layered transition-metal dichalcogenides (TMDs) host competing electronic states that can be tuned by external perturbations, providing a platform to explore the interplay between disorder, electronic structure, and quantum transport. Here…

We present high field magneto-transport data from a range of 30nm wide InSb/InAlSb quantum wells. The low temperature carrier mobility of the samples studied ranged from 18.4 to 39.5 m2V-1s-1 with carrier densities between 1.5x1015 and…

介观与纳米尺度物理 · 物理学 2013-05-29 A. M. Gilbertson , W. R. Branford , M. Fearn , L. Buckle , P. D. Buckle , T. Ashley , L. F. Cohen
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