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Title: Detailed study of the Fermi surfaces of the type-II Dirac semimetallic candidates X Te 2 ( X =Pd, Pt)

Abstract

We present a detailed quantum oscillatory study on the Dirac type-II semimetallic candidates PdTe2 and PtTe2 via the temperature and the angular dependence of the de Haas–van Alphen and Shubnikov–de Haas effects. In high-quality single crystals of both compounds, i.e., displaying carrier mobilities between 103 and 104 cm2/Vs, we observed a large nonsaturating magnetoresistivity which in PtTe2 at a temperature T = 1.3 K leads to an increase in the resistivity up to (5 × 104)% under a magnetic field μ0H = 62 T. These high mobilities correlate with their light effective masses in the range of 0.04 to 1 bare electron mass according to our measurements. For PdTe2 the experimentally determined Fermi surface cross-sectional areas show excellent agreement with those resulting from band structure calculations. Surprisingly, this is not the case for PtTe2, whose agreement between calculations and experiments is relatively poor even when electronic correlations are included in the calculations. Therefore, our study provides strong support for the existence of a Dirac type-II node in PdTe2 and probably also for PtTe2. Band structure calculations indicate that the topologically nontrivial bands of PtTe2 do not cross the Fermi level εF. In contrast, for PdTe2 the Dirac type-II cone doesmore » intersect εF, although our calculations also indicate that the associated cyclotron orbit on the Fermi surface is located in a distinct kz plane with respect to that of the Dirac type-II node. Furthermore, it should yield a trivial Berry phase.« less

Authors:
 [1];  [1];  [1];  [1];  [2];  [1];  [1];  [3];  [3];  [4];  [4];  [4];  [1];  [1]
+ Show Author Affiliations
  1. Florida State Univ., Tallahassee, FL (United States)
  2. Florida State Univ., Tallahassee, FL (United States); Columbia Univ., New York, NY (United States)
  3. Dresden High Magnetic Field Lab. (HLD-EMFL) (Germany)
  4. Univ. of Texas at Dallas, Richardson, TX (United States)
Publication Date:
Research Org.:
Florida State Univ., Tallahassee, FL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1594226
Alternate Identifier(s):
OSTI ID: 1457813
Grant/Contract Number:  
SC0002613; DMR-1700030; NSF/DMR-1644779
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 23; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; First-principles calculations; Superconductivity; Topological materials; de Haas-van Alphen effect; Shubnikov-de Haas effect

Citation Formats

Zheng, W., Schönemann, R., Aryal, N., Zhou, Q., Rhodes, D., Chiu, Y. -C., Chen, K. -W., Kampert, E., Förster, T., Martin, T. J., McCandless, G. T., Chan, J. Y., Manousakis, E., and Balicas, L. Detailed study of the Fermi surfaces of the type-II Dirac semimetallic candidates XTe2 ( X =Pd, Pt). United States: N. p., 2018. Web. doi:10.1103/PhysRevB.97.235154.
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Zheng, W., Schönemann, R., Aryal, N., Zhou, Q., Rhodes, D., Chiu, Y. -C., Chen, K. -W., Kampert, E., Förster, T., Martin, T. J., McCandless, G. T., Chan, J. Y., Manousakis, E., & Balicas, L. Detailed study of the Fermi surfaces of the type-II Dirac semimetallic candidates XTe2 ( X =Pd, Pt). United States. https://doi.org/10.1103/PhysRevB.97.235154
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Zheng, W., Schönemann, R., Aryal, N., Zhou, Q., Rhodes, D., Chiu, Y. -C., Chen, K. -W., Kampert, E., Förster, T., Martin, T. J., McCandless, G. T., Chan, J. Y., Manousakis, E., and Balicas, L. Fri . "Detailed study of the Fermi surfaces of the type-II Dirac semimetallic candidates XTe2 ( X =Pd, Pt)". United States. https://doi.org/10.1103/PhysRevB.97.235154. https://www.osti.gov/servlets/purl/1594226.
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@article{osti_1594226,
title = {Detailed study of the Fermi surfaces of the type-II Dirac semimetallic candidates XTe2 ( X =Pd, Pt)},
author = {Zheng, W. and Schönemann, R. and Aryal, N. and Zhou, Q. and Rhodes, D. and Chiu, Y. -C. and Chen, K. -W. and Kampert, E. and Förster, T. and Martin, T. J. and McCandless, G. T. and Chan, J. Y. and Manousakis, E. and Balicas, L.},
abstractNote = {We present a detailed quantum oscillatory study on the Dirac type-II semimetallic candidates PdTe2 and PtTe2 via the temperature and the angular dependence of the de Haas–van Alphen and Shubnikov–de Haas effects. In high-quality single crystals of both compounds, i.e., displaying carrier mobilities between 103 and 104 cm2/Vs, we observed a large nonsaturating magnetoresistivity which in PtTe2 at a temperature T = 1.3 K leads to an increase in the resistivity up to (5 × 104)% under a magnetic field μ0H = 62 T. These high mobilities correlate with their light effective masses in the range of 0.04 to 1 bare electron mass according to our measurements. For PdTe2 the experimentally determined Fermi surface cross-sectional areas show excellent agreement with those resulting from band structure calculations. Surprisingly, this is not the case for PtTe2, whose agreement between calculations and experiments is relatively poor even when electronic correlations are included in the calculations. Therefore, our study provides strong support for the existence of a Dirac type-II node in PdTe2 and probably also for PtTe2. Band structure calculations indicate that the topologically nontrivial bands of PtTe2 do not cross the Fermi level εF. In contrast, for PdTe2 the Dirac type-II cone does intersect εF, although our calculations also indicate that the associated cyclotron orbit on the Fermi surface is located in a distinct kz plane with respect to that of the Dirac type-II node. Furthermore, it should yield a trivial Berry phase.},
doi = {10.1103/PhysRevB.97.235154},
journal = {Physical Review B},
number = 23,
volume = 97,
place = {United States},
year = {Fri Jun 15 00:00:00 EDT 2018},
month = {Fri Jun 15 00:00:00 EDT 2018}
}
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https://doi.org/10.1103/PhysRevB.97.235154
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    Works referencing / citing this record:

    Pressure-induced Lifshitz transition in the type II Dirac semimetal PtTe2
    journal, December 2018

    • Liu, FengLiang; Li, JiaHeng; Zhang, KeNan
    • Science China Physics, Mechanics & Astronomy, Vol. 62, Issue 4
    • DOI: 10.1007/s11433-018-9319-3

    Superconductivity under pressure in the Dirac semimetal PdTe 2
    journal, October 2019

    Enhanced, homogeneously type-II superconductivity in Cu-intercalated PdTe 2
    journal, December 2019

    • Vasdev, Aastha; Sirohi, Anshu; Hooda, M. K.
    • Journal of Physics: Condensed Matter, Vol. 32, Issue 12
    • DOI: 10.1088/1361-648x/ab5ac4

    Experimental progress on layered topological semimetals
    journal, April 2019

    Superconductivity under pressure in the Dirac semimetal PdTe2
    text, January 2019

    Experimental Progress on Layered Topological Semimetals
    text, January 2019

    Enhanced, homogeneous type II superconductivity in Cu-intercalated PdTe$_2$
    text, January 2019

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