Bulletin of the American Physical Society
2018 Joint Fall Meeting of the Texas Sections of APS, AAPT and Zone 13 of the SPS
Volume 63, Number 18
Friday–Saturday, October 19–20, 2018; University of Houston, Houston, Texas
Session P05: Condensed Matter Physics II
2:10 PM–3:10 PM,
Saturday, October 20, 2018
Science and Engineering Classroom (SEC)
Room: 204
Chair: Alex Zakhidov, Texas State University
Abstract ID: BAPS.2018.TSF.P05.2
Abstract: P05.00002 : Study of High-Pressure Effects on Weyl Semimetal Mo0.25W0.75Te2
2:22 PM–2:34 PM
Abstract 
Presenter:
Rabin Dahal
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA)
Authors:
Rabin Dahal
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA)
Liangzi Deng
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA)
Narayan Poudel
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA, Idaho National Laboratory, Idaho Falls, ID 83402, USA)
Melissa Gooch
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA)
Zheng Wu
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA)
Ching-Wu Chu
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA)
Transition metal dichalcogenides MoxW1-xTe2 have attracted great research interest since they exhibit the Weyl fermion semimetal state with x = 0.25, offering the possibility to realize a tunable Weyl semimetal [1]. Weyl semimetals show different interesting properties, including negative longitudinal magnetoresistance, quantum anomalous Hall effect, and unconventional superconductivity. Single crystals of Mo0.25W0.75Te2 with length up to 1.1 cm were grown via chemical vapor transport method and characterized by X-ray diffraction, energy dispersive X-ray spectroscopy, and transport measurements. High pressure effects have been investigated by using a homemade BeCu clamp cell. A possible structural transition was observed under pressure at and above 1.2 GPa, but the signature of superconductivity in Mo0.25W0.75Te2 at temperature down to 1.3 K and under pressure up to 1.7 GPa was not detected. High pressure studies above 1.7 GPa using a diamond anvil cell are in progress.
[1] Belopolski, I. et al., Nat. Commun. 7, 13643 (2016).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.TSF.P05.2
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