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We present a comprehensive investigation of the structural, electrical transport, and magnetic properties of FeSe$_{\it{x}}$ ($\it{x}$ = 1.14, 1.18, 1.23, 1.28, and 1.32) to unravel the mechanism of the metal-insulator transition observed…

Strongly Correlated Electrons · Physics 2025-01-31 Shubham Purwar , Shinjini Paul , Kritika Vijay , R. Venkatesh , Soma Banik , P. Mahadevan , S. Thirupathaiah

Extremely large magnetoresistance (XMR) was recently discovered in many non-magnetic materials, while its underlying mechanism remains poorly understood due to the complex electronic structure of these materials. Here, we report an…

We report on the temperature dependence of microwave-induced resistance oscillations in high-mobility two-dimensional electron systems. We find that the oscillation amplitude decays exponentially with increasing temperature, as…

Mesoscale and Nanoscale Physics · Physics 2009-02-17 A. T. Hatke , M. A. Zudov , L. N. Pfeiffer , K. W. West

We use dynamical mean-field theory to study how electronic transport in multi-orbital metals is influenced by correlated (nominally) empty orbitals that are in proximity to the Fermi level. Specifically, we study 2 + 1 orbital and 3 + 2…

Strongly Correlated Electrons · Physics 2025-03-10 Johanna Moser , Jernej Mravlje , Markus Aichhorn

The ZrSiS-class of layered materials offer interesting topological and magnetic characteristics suitable for spintronics applications. In this work, we have synthesized a polycrystalline NdBiTe using solid-state reaction technique and have…

Strongly Correlated Electrons · Physics 2024-10-02 Prabuddha Kant Mishra , Shivani Kumawat , Soumyakanta Panda , Niharika Mohapatra , B K Mani , Ashok Kumar Ganguli

We present different transport measurements up to fields of 29~T in the recently discovered heavy-fermion superconductor UTe$_{2}$ with magnetic field $H$ applied along the easy magnetization a-axis of the body-centered orthorhombic…

The structural and magnetic properties of Y$_{0.9}$Pr$_{0.1}$Fe$_2$D$_{3.5}$ deuteride have been investigated by synchrotron and neutron diffraction, magnetic measurements, and differential scanning calorimetry. Deuterium insertion induces…

Applied Physics · Physics 2021-10-04 Valerie Paul-Boncour , Aritz Herrero , Vitalii Shtender , Karine Provost , Erik Elkaim

Using the experimental capability of the novel X-ray diffraction instrument available at the 25 Tesla Florida Split Coil Magnet at the NHMFL, Tallahassee we present an extensive investigation on the magnetostriction of polycrystalline…

Materials Science · Physics 2021-06-23 S. Sharma , A. E. Kovalev , D. J. Rebar , D. Mann , V. Yannello , M. Shatruk , A. V. Suslov , J. H. Smith , T. Siegrist

After the discovery of the ARECh2 (A=alkali or monovalent ions, RE=rare-earth, Ch= chalcogen) triangular lattice quantum spin liquid (QSL) family, a series of its oxide, sulfide, and selenide counterparts has been consistently reported and…

Strongly Correlated Electrons · Physics 2024-08-20 Weiwei Liu , Zheng Zhang , Dayu Yan , Jianshu Li , Zhitao Zhang , Jianting Ji , Feng Jin , Youguo Shi , Qingming Zhang

The organic charge-transfer salt EtMe$_3$P[Pd(dmit)$_2$]$_2$ is a quasi-two-dimensional Mott insulator with localized spins $S$ = 1/2 residing on a distorted triangular lattice. Here we report measurements of the uniaxial thermal expansion…

Strongly Correlated Electrons · Physics 2014-01-14 Rudra Sekhar Manna , Mariano de Souza , Reizo Kato , Michael Lang

Through a thorough magneto-transport study of antiferromagnetic topological insulator MnBi2Te4 (MBT) thick films, a positive linear magnetoresistance (LMR) with a two-dimensional (2D) character is found in high perpendicular magnetic fields…

Materials Science · Physics 2021-01-04 X. Lei , L. Zhou , Z. Y. Hao , X. Z. Ma , C. Ma , Y. Q. Wang , P. B. Chen , B. C. Ye , L. Wang , F. Ye , J. N. Wang , J. W. Mei , H. T. He

2H phase (trigonal prismatic D3h) of layered two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted a lot of interests due to the superior electronic and optoelectronic properties. However, flexible electronic devices…

Computational Physics · Physics 2019-06-04 Yi Wang , Zhibin Gao , Jun Zhou

$\beta$-Ag$_2$Se is a promising material for room temperature thermoelectric applications and magneto-resistive sensors. However, no attention was paid earlier to the hysteresis in the temperature dependence of resistivity ($\rho$($T$)).…

Materials Science · Physics 2021-10-27 L. S. Sharath Chandra , SK. Ramjan , Soma Banik , Archna Sagdeo , M. K. Chattopadhyay

Fe$_4$GeTe$_2$, an itinerant vdW ferromagnet (FM) having Curie temperature (T$_C$) close to room temperature ($\sim 270$ K), exhibits another transition (T$_{SR}$ $\sim$ 120 K) where the easy axis of magnetization changes from in-plane to…

Mesoscale and Nanoscale Physics · Physics 2024-04-12 Riju Pal , Buddhadeb Pal , Suchanda Mondal , Prabhat Mandal , Atindra Nath Pal

We investigate the temperature evolution of the structural parameters of potential ferrotoroidic LiFeSi2O6 compound across structural and magnetic phase transitions. The structural transition (TS)is around 220K and the paramagnetic to…

Strongly Correlated Electrons · Physics 2019-09-04 R. K. Maurya , Priyamedha Sharma , R. Rawat , R. S. Singh , R. Bindu

We have investigated a single crystal of CeAgSb2 using low field ac-susceptibility, thermal expansion and magnetostriction measurements in the temperature range 1.5K to 90K. The ac-susceptibility exhibits a sharp peak at 9.7K for both B//c…

Strongly Correlated Electrons · Physics 2007-05-23 D. T. Adroja , P. C. Riedi , J. G. M. Armitage , D. Fort

We report on the discovery of a large, room temperature magnetoresistance (MR) effect in polyfluorene sandwich devices in weak magnetic fields. We characterize this effect and discuss its dependence on voltage, temperature, film thickness,…

Materials Science · Physics 2016-08-16 T. L. Francis , Ö. Mermer , G. Veeraraghavan , M. Wohlgenannt

Transition-metal dichalcogenides (WTe$_2$ and MoTe$_2$) have drawn much attention, recently, because of the nonsaturating extremely large magnetoresistance (XMR) observed in these compounds in addition to the predictions of likely type-II…

The tungsten ditelluride WTe2 was suggested to belong to the Weyl semimetal family. We studied 125Te spin-lattice relaxation and NMR spectra in a WTe2 single crystal within a large range from 28 K up to room temperature. Measurements were…

The physical properties of the spinel LiGaCr4S8 have been studied with neutron diffraction, X-ray diffraction, magnetic susceptibility and heat capacity measurements. The neutron diffraction and synchrotron X-ray diffraction data reveal…