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The phase landscape of UTe$_2$ features a remarkable diversity of superconducting phases under applied pressure and magnetic field. Recent quantum oscillation studies at ambient pressure have revealed the quasi-2D Fermi surface of this…

We investigate theoretically Fermionic superfluidity induced by Feshbach resonance in the orbital p-wave channel. We show that, due to the dipole interaction, the pairing is extremely anisotropic. When this dipole interaction is relatively…

Other Condensed Matter · Physics 2007-05-23 Chi-Ho Cheng , S. -K. Yip

We have observed that the tunneling magnetoconductance between two-dimensional (2D) electron gases formed at nominally identical InAs-AlSb interfaces most often exhibits two sets of Shubnikov-de Haas oscillations with almost the same…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Y. Lin , E. M. González , E. E. Mendez , R. Magno , B. R. Bennett , A. S. Bracker

We present a 2.5D MHD simulation of a magnetic flux rope (FR) propagating in the heliosphere and investigate the cause of the observed sharp plasma beta transition. Specifically, we consider a strong internal magnetic field and an explosive…

Solar and Stellar Astrophysics · Physics 2015-06-17 Neel P. Savani , A. Vourlidas , D. Shiota , M. G. Linton , K. Kusano , N. Lugaz , A. P. Rouillard

A theoretical model is proposed to describe asymmetric gate-voltage dependence of conductance and noise in two-terminal ballistic graphene devices. The model is analyzed independently within the self-consistent Hartree and Thomas-Fermi…

Mesoscale and Nanoscale Physics · Physics 2011-07-08 W. -R. Hannes , M. Jonson , M. Titov

Flat bands form in a 3D Hopf-linked graphene crystal or a 3D carbon allotrope named Hopfene, which qualitatively differ from bands of only graphenes. This paper discusses carbon-hexagon deformation on the level shift of a flat band via…

Materials Science · Physics 2020-01-29 Isao Tomita , Shinichi Saito

We present density functional theory (DFT) calculations and a full set of X-ray spectra (resonant inelastic X-ray scattering and X-ray photoelectron spectra) measurements of single crystal CaFe2As2. The experimental valence band spectra are…

The orbital Feshbach resonance (OFR) is a novel scheme for magnetically tuning the interactions in closed-shell fermionic atoms. Remarkably, unlike the Feshbach resonances in alkali atoms, the open and closed channels of the OFR are only…

Quantum Gases · Physics 2020-02-25 E. K. Laird , Z. -Y. Shi , M. M. Parish , J. Levinsen

Two-dimensional (2D) semiconductors isoelectronic to phosphorene has been drawing much attention recently due to their promising applications for next-generation (opt)electronics. This family of 2D materials contains more than 400 members,…

Mesoscale and Nanoscale Physics · Physics 2017-08-17 Zhen Zhu , Baojuan Dong , Teng Yang , Zhi-Dong Zhang

Field-, temperature- and angle-dependent Fourier amplitude of de Haas-van Alphen (dHvA) oscillations are calculated for compensated two-dimensional (2D) metals with textbook Fermi surface (FS) composed of one hole and two electron orbits…

We measure the magneto-conductance through a micron-sized quantum dot hosting about 500 electrons in the quantum Hall regime. In the Coulomb blockade, when the island is weakly coupled to source and drain contacts, edge reconstruction at…

Understanding the physics of strongly correlated electronic systems has been a central issue in condensed matter physics for decades. In transition metal oxides, strong correlations characteristic of narrow $d$ bands is at the origin of…

Strongly Correlated Electrons · Physics 2021-05-05 Mathieu Mirjolet , Francisco Rivadulla , Premysl Marsik , Vladislav Borisov , Roser Valenti , Josep Fontcuberta

Because spin-orbit coupling (SOC) is invisible in the band structure when inversion symmetry exists, whether spins are trivially degenerate or strongly coupled to momentum due to SOC is presumed to make little difference in transport…

Mesoscale and Nanoscale Physics · Physics 2024-06-06 Daniel Kaplan , Ady Stern , Binghai Yan

We study the electron transport in three terminal junctions and quantum rings looking for the classical deflection of electron trajectories in presence of intersubband scattering. We indicate that although the Aharonov-Bohm oscillations and…

Mesoscale and Nanoscale Physics · Physics 2012-02-06 M. R. Poniedziałek , B. Szafran

Density functional theory (DFT) and many body perturbation theory at the G$_0$W$_0$ level are employed to study the electronic properties of polythiophene (PT) adsorbed on graphene surface. Analysis of charge density difference shows the…

Mesoscale and Nanoscale Physics · Physics 2017-09-07 F. Marsusi , I. A. Fedorov , S. Gerivani

We use density functional theory to calculate the electronic band structures, cohesive energies, phonon dispersions, and optical absorption spectra of two-dimensional In$_2$X$_2$ crystals, where X is S, Se, or Te. We identify two…

Mesoscale and Nanoscale Physics · Physics 2014-09-19 V. Zolyomi , N. D. Drummond , V. I. Fal'ko

We investigate a Fabry-P\'erot interferometer in the integer Hall regime in which only one edge channel is transmitted and n channels are trapped into the interferometer loop. Addressing recent experimental observations, we assume that…

Mesoscale and Nanoscale Physics · Physics 2017-08-18 D. Ferraro , E. Sukhorukov

We demonstrate phase-coherent transport in suspended long-channel Cd3As2 nanowire devices using both direct current (DC) transport and radio-frequency (RF) reflectometry measurements. By integrating Cd3As2 nanowires with on-chip…

We report a study of disordered electron systems with spin-orbit coupling on a cylinder using methods of random matrix ensembles. With a threading flux turned on, the single particle levels will generally avoid, rather than cross, each…

Mesoscale and Nanoscale Physics · Physics 2009-04-03 Daijiro Tobe , Mahito Kohmoto , Masatoshi Sato , Yong-Shi Wu

We study the superconducting instability and the resulting superconducting states in a two-dimensional repulsive Fermi gas with Rashba spin-orbit coupling at low electron density (namely the Fermi energy $E_F$ is lower than the energy $E_R$…

Superconductivity · Physics 2017-09-15 Luyang Wang