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Related papers: Single spin-polarised Fermi surface in SrTiO$_3$ t…

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We report the structural and physical properties of epitaxial Bi2FeCrO6 thin films on epitaxial SrRuO3 grown on (100)-oriented SrTiO3 substrates by pulsed laser ablation. The 300 nm thick films exhibit both ferroelectricity and magnetism at…

The surface of a 3D topological insulator is a new type of two dimensional electron gas (2DEG). The exactly quantized magneto-optical or axionic response of a 3D topological insulator is a direct result of the Berry's phase protected…

Mesoscale and Nanoscale Physics · Physics 2011-10-24 M. Zahid Hasan

The effective mass at the Fermi level is measured in the strongly interacting two-dimensional (2D) electron system in ultra-clean SiGe/Si/SiGe quantum wells in the low-temperature limit in tilted magnetic fields. At low electron densities,…

Mesoscale and Nanoscale Physics · Physics 2023-10-16 M. Yu. Melnikov , A. A. Shakirov , A. A. Shashkin , S. -H. Huang , C. W. Liu , S. V. Kravchenko

Transport properties of a two-dimensional electron gas (2DEG) are studied in the presence of a perpendicular magnetic field $B$, of a {\it weak} one-dimensional (1D) periodic potential modulation, and of the spin-orbit interaction (SOI)…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 X. F. Wang , P. Vasilopoulos , F. M. Peeters

${\gamma}$-GeSe is a new type of layered bulk material that was recently successfully synthesized. By means of density functional theory first-principles calculations, we systematically studied the physical properties of two-dimensional…

Materials Science · Physics 2023-07-05 Shuyi Shi , Kuan-Rong Hao , Xing-Yu Ma , Qing-Bo Yan , Gang Su

Using LDA+GTB (local density approximation+generalized tight-binding) hybrid scheme we investigate the band structure of the electron-doped high-$T_c$ material Sm$_{2-x}$Ce$_{x}$CuO$_4$. Parameters of the minimal tight-binding model for…

Strongly Correlated Electrons · Physics 2009-12-03 M. M. Korshunov , E. V. Zakharova , I. A. Nekrasov , Z. V. Pchelkina , S. G. Ovchinnikov

In this work, we patterned a two-dimensional electron gas (2DEG) on the surface of a SrTiO$_3$ thin film grown homoepitaxially on SrTiO$_3$ by hybrid molecular beam epitaxy (hMBE). We explored the superconducting dome in this material…

In multiband superconductivity, the case where the single electron hopping between different Fermi surface spots of different symmetry is forbidden by selection rules is recently attracting a large interest. The focus is addressed to…

Superconductivity · Physics 2014-10-14 Antonio Bianconi , Davide Innocenti , Antonio Valletta , Andrea Perali

We have performed angle-resolved photoemission spectroscopy on epitaxial VTe2 films to elucidate the relationship between the fermiology and charge-density waves (CDW). We found that a two-dimensional triangular pocket in 1 monolayer (ML)…

Materials Science · Physics 2021-08-04 T. Kawakami , K. Sugawara , T. Kato , T. Taguchi , S. Souma , T. Takahashi , T. Sato

We have examined theoretically the electronic band structure and Fermi surface of tetragonal low-temperature superconductor Bi2Pd. Our main results are that (i) the Pd 4d and Bi 6p states determine the main peculiarities of the…

Superconductivity · Physics 2012-08-09 I. R. Shein , A. L. Ivanovskii

Here, our angle resolved photoemission spectroscopy experiment reveled that the surface band structure of the 1T-VSe2 host electronic states that was not predicted or probed before. Earlier claims to support charge density wave phase can be…

Materials Science · Physics 2023-04-19 Turgut Yilmaz , Boris Sinkovic , Elio Vescovo

We report on a combined study of the de Haas-van Alphen effect and angle resolved photoemission spectroscopy on single crystals of the metallic delafossite PdRhO$_2$ rounded off by \textit{ab initio} band structure calculations. A high…

Sr3Ru2O7 belongs to the family of layered strontium ruthenates and exhibits a range of unusual emergent properties, such as electron nematic behavior and metamagnetism. Here, we show that epitaxial film strain significantly modifies these…

Strongly Correlated Electrons · Physics 2018-05-01 Patrick B. Marshall , Kaveh Ahadi , Honggyu Kim , Susanne Stemmer

Thick metallic silver films have been deposited onto Si(111)-(7x7) substrates at room temperature. Their electronic properties have been studied by using angle resolved photoelectron spectroscopy (ARPES). In addition to the electronic band…

Materials Science · Physics 2009-11-07 J. F. Sanchez-Royo , J. Avila , V. Perez-Dieste , M. de Seta , M. C. Asensio

We found that a surface state induced by hydrogenation on the surface of SrTiO$_{3}$(001) (STO) did not obey the rigid band model, which was confirmed by in situ electrical resistivity measurements in ultrahigh vacuum. With exposure of…

Mesoscale and Nanoscale Physics · Physics 2020-03-04 Y. Takeuchi , R. Hobara , R. Akiyama , A. Takayama , S. Ichinokura , R. Yukawa , I. Matsuda , S. Hasegawa

The understanding of density waves is a vital component of our insight into electronic quantum matters. Here, we propose an additional mosaic to the existing mechanisms such as Fermi-surface nesting, electron-phonon coupling, and exciton…

Strongly Correlated Electrons · Physics 2023-06-22 Tianlun Zhao , Yi Zhang

The polar interface between LaAlO$_{3}$ and SrTiO$_{3}$ has shown promise as a field effect transistor, with reduced (nanoscale) feature sizes and potentially added functionality over conventional semiconductor systems. However, the…

Mesoscale and Nanoscale Physics · Physics 2011-05-18 N. C. Bristowe , P. B. Littlewood , Emilio Artacho

Nb-doped SrTiO$_{3}$ epitaxial thin films have been prepared on (001) SrTiO$_{3}$ substrates using pulsed laser deposition. A high substrate temperature ($>1000^{\circ}{C}$) was found to be necessary to achieve 2-dimensional growth. Atomic…

Superconductivity · Physics 2015-06-25 K. S. Takahashi , D. Jaccard , K. Shibuya , T. Ohnishi , M. Lippmaa , J. -M. Triscone

Realization of a fully metallic two-dimensional electron gas at the interface between artificially-grown LaAlO$_3$ and SrTiO$_3$ thin films has been an exciting challenge. Here we present for the first time the successful realization of a…

The electronic structure of the layered 4$d$ transition metal oxide Sr$_{2}$RhO$_{4}$ is investigated by angle resolved photoemission. We find well-defined quasiparticle excitations with a highly anisotropic dispersion, suggesting a…

Strongly Correlated Electrons · Physics 2023-11-27 F. Baumberger , N. J. C. Ingle , W. Meevasana , K. M. Shen , D. H. Lu , R. S. Perry , A. P. Mackenzie , Z. Hussain , D. J. Singh , Z. -X. Shen