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The coupling of spin and electronic degrees of freedom via the spin-orbit interaction (SOI) is an essential ingredient for many proposed future technologies. However, probing the strength and nature of SOI is a significant challenge,…

介观与纳米尺度物理 · 物理学 2026-01-21 Kazuki Nakazawa , Henry F. Legg , Renato M. A. Dantas , Jelena Klinovaja , Daniel Loss

Nodal-line semimetals are topological semimetals in which band touchings form nodal lines or rings. Around a loop that encloses a nodal line, an electron can accumulate a nontrivial $\pi$ Berry phase, so the phase shift in the Shubnikov-de…

介观与纳米尺度物理 · 物理学 2018-04-10 Cequn Li , C. M. Wang , Bo Wan , Xiangang Wan , Hai-Zhou Lu , X. C. Xie

Shubnikov-de Haas (SdH) oscillations and magneto-intersubband oscillations of magnetoresistance of structures with single HgTe quantum wells with a width of (10-18) nm have been experimentally studied. The spectrum of the conduction band in…

介观与纳米尺度物理 · 物理学 2024-05-31 G. M. Minkov , O. E. Rut , A. A. Sherstobitov , A. V. Germanenko , S. A. Dvoretski , N. N. Mikhailov

We perform the quantum magnetotransport measurements and first-principles calculations on high quality single crystals of SmAlSi, a new topological Weyl semimetal candidate. At low temperatures, SmAlSi exhibits large non-saturated…

We have investigated in frame of the quantum transport theory the magnetic quantum oscillations of the longitudinal magnetoresistance $\rho_{zz}$ in quasi two-dimensional metals for a magnetic field perpendicular to the layers. Giant…

凝聚态物理 · 物理学 2016-08-31 T. Champel , V. P. Mineev

The line shape of the Shubnikov-de Haas (SdH) oscillation has been analyzed in detail for a GaAs/AlGaAs two-dimensional electron gas. The line shape, or equivalently the behavior of the Fourier components, of the experimentally observed SdH…

介观与纳米尺度物理 · 物理学 2008-06-10 Akira Endo , Yasuhiro Iye

The coupling between band structure and magnetism can lead to intricate Fermi surface modifications. Here we report on the comprehensive study of the Shubnikov-de Haas (SdH) effect in two rare-earth-based magnetic Weyl semimetals, NdAlSi…

Shubnikov-de Haas (SdH) oscillations and upper critical magnetic field ($H\_{c2}$) of the iron-based superconductor FeSe ($T\_c$ = 8.6 K) have been studied by tunnel diode oscillator-based measurements in magnetic fields of up to 55 T and…

Shubnikov - de Haas oscillations were measured in single crystals of highly metallic antiferromagnetic SmAgSb$_{2}$ and ferromagnetic CeAgSb$_{2}$ using a tunnel diode resonator. Resistivity oscillations as a function of applied magnetic…

The Haldane model on a honeycomb lattice is a paradigmatic example of a system featuring quantized Hall conductivity in the absence of an external magnetic field, that is, a quantum anomalous Hall effect. Recent theoretical work predicted…

介观与纳米尺度物理 · 物理学 2018-08-15 Luis M. Canonico , José H. García , Tatiana G. Rappoport , Aires Ferreira , R. B. Muniz

The resistivity and Hall effect in CeNiSn are measured at temperatures down to 35 mK and in magnetic fields up to 20 T with the current applied along the {\it b} axis. The resistivity at zero field exhibits quadratic temperature dependence…

强关联电子 · 物理学 2009-11-07 T. Terashima , C. Terakura , S. Uji , H. Aoki , Y. Echizen , T. Takabatake

Co$_3$Sn$_2$S$_2$ is a ferromagnetic semi-metal with Weyl nodes in its band structure and a large anomalous Hall effect below its Curie temperature of 177 K. We present a detailed study of its Fermi surface and examine the relevance of the…

介观与纳米尺度物理 · 物理学 2021-09-22 Linchao Ding , Jahyun Koo , Changjiang Yi , Liangcai Xu , Huakun Zuo , Meng Yang , Youguo Shi , Binghai Yan , Kamran Behnia , Zengwei Zhu

Appearance of quantum oscillations (QO) in both thermodynamic and transport properties of metals at low temperatures is the most striking experimental consequence of the existence of a Fermi surface (FS). The frequency of these oscillations…

The widely reported magnetoresistance oscillations in LaAlO3/SrTiO3 heterostructures have invariably been attributed to the Shubnikov-de Haas (SdH) effect, despite a pronounced inconsistency with low-field Hall resistance measurements. Here…

介观与纳米尺度物理 · 物理学 2018-02-19 Guanglei Cheng , Anil Annadi , Shicheng Lu , Hyungwoo Lee , Jung-Woo Lee , Mengchen Huang , Chang-Beom Eom , Patrick Irvin , Jeremy Levy

We report transverse and longitudinal magneto-transport properties of NbAs2 single crystals. Attributing to the electron-hole compensation, non-saturating large transverse magnetoresistance reaches up to 8000 at 9 T at 1.8 K with mobility…

强关联电子 · 物理学 2016-05-10 Bing Shen , Xiaoyu Deng , Gabriel Kotliar , Ni Ni

We analyze the behavior of the longitudinal conductivity $\sigma_{zz}$ in a field perpendicular to the highly conducting plane of a quasi-2D {\em multiband} metal in the case of closed system and open systems where $\tau$ is fixed, $\tau$…

介观与纳米尺度物理 · 物理学 2008-02-29 I. O. Thomas , V. V. Kabanov , A. S. Alexandrov

We performed the detailed magnetotransport measurements and first principle calculations to study the electronic properties of the transition metal dipnictides ZrAs2, which is a topological nodal-line semimetal. Extremely large unsaturated…

材料科学 · 物理学 2025-03-03 Junjian Mi , Sheng Xu , Shuxiang Li , Chenxi Jiang , Zheng Li , Qian Tao , Zhu-An Xu

Giant anomalous Hall effect (AHE) and magneto-optical activity can emerge in magnets with topologically non-trivial degeneracies. However, identifying the specific band structure features like Weyl points, nodal lines or planes which…

We consider an unconventional superconductor in a low frequency harmonic magnetic field. In the Meissner regime at low T a nonlinear magnetic response arises from quasiparticle excitations near minima in the energy gap. Various physical…

超导电性 · 物理学 2009-10-31 Igor Zutic , Oriol T. Valls

Pressure dependence of the Shubnikov-de Haas (SdH) oscillations spectra of the quasi-two di- mensional organic metal (ET)8[Hg4Cl12(C6H5Br)]2 have been studied up to 1.1 GPa in pulsed magnetic fields of up to 54 T. According to band…

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