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Nowakowska P, Pavlosiuk O, Wiśniewski P, Kaczorowski D. Temperature-dependent Fermi surface probed by Shubnikov-de Haas oscillations in topological semimetal candidates DyBi and HoBi. Sci Rep 2023; 13:22776. [PMID: 38123605 PMCID: PMC10733278 DOI: 10.1038/s41598-023-49941-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023] Open
Abstract
Rare earth-based monopnictides are among the most intensively studied groups of materials in which extremely large magnetoresistance has been observed. This study explores magnetotransport properties of two representatives of this group, DyBi and HoBi. The extreme magnetoresistance is discovered in DyBi and confirmed in HoBi. At [Formula: see text] K and in [Formula: see text] T for both compounds, magnetoresistance reaches the order of magnitude of [Formula: see text]. For both materials, standard Kohler's rule is obeyed only in the temperature range from 50 to 300 K. At lower temperatures, extended Kohler's rule has to be invoked because carrier concentrations and mobilities strongly change with temperature and magnetic field. This is further proven by the observation of a quite rare temperature-dependence of oscillation frequencies in Shubnikov-de Haas effect. Rate of this dependence clearly changes at Néel temperature, reminiscent of a novel magnetic band splitting. Multi-frequency character of the observed Shubnikov-de Haas oscillations points to the coexistence of electron- and hole-type Fermi pockets in both studied materials. Overall, our results highlight correlation of temperature dependence of the Fermi surface with the magnetotransport properties of DyBi and HoBi.
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Affiliation(s)
- Paulina Nowakowska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422, Wrocław, Poland
| | - Orest Pavlosiuk
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422, Wrocław, Poland.
| | - Piotr Wiśniewski
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422, Wrocław, Poland
| | - Dariusz Kaczorowski
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422, Wrocław, Poland
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Regmi S, Huang CY, Khan MA, Wang B, Pradhan Sakhya A, Hosen MM, Thompson J, Singh B, Denlinger JD, Ishigami M, Mitchell JF, Kaczorowski D, Bansil A, Neupane M. Electronic structure in a transition metal dipnictide TaAs 2. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 36:075502. [PMID: 37857273 DOI: 10.1088/1361-648x/ad04fc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 10/19/2023] [Indexed: 10/21/2023]
Abstract
The family of transition-metal dipnictides has been of theoretical and experimental interest because this family hosts topological states and extremely large magnetoresistance (MR). Recently,TaAs2, a member of this family, has been predicted to support a topological crystalline insulating state. Here, by using high-resolution angle-resolved photoemission spectroscopy (ARPES), we reveal both closed and open pockets in the metallic Fermi surface (FS) and linearly dispersive bands on the (2‾01) surface, along with the presence of extreme MR observed from magneto-transport measurements. A comparison of the ARPES results with first-principles computations shows that the linearly dispersive bands on the measured surface ofTaAs2are trivial bulk bands. The absence of symmetry-protected surface state on the (2‾01) surface indicates its topologically dark nature. The presence of open FS features suggests that the open-orbit fermiology could contribute to the extremely large MR ofTaAs2.
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Affiliation(s)
- Sabin Regmi
- Department of Physics, University of Central Florida, Orlando, FL 32816, United States of America
- Currently at Idaho National Laboratory, Idaho Falls, ID 83415, United States of America
| | - Cheng-Yi Huang
- Department of Physics, Northeastern University, Boston, MA 02115, United States of America
| | - Mojammel A Khan
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - Baokai Wang
- Department of Physics, Northeastern University, Boston, MA 02115, United States of America
| | - Anup Pradhan Sakhya
- Department of Physics, University of Central Florida, Orlando, FL 32816, United States of America
| | - M Mofazzel Hosen
- Department of Physics, University of Central Florida, Orlando, FL 32816, United States of America
| | - Jesse Thompson
- Department of Physics, University of Central Florida, Orlando, FL 32816, United States of America
| | - Bahadur Singh
- Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Mumbai 400005, India
| | - Jonathan D Denlinger
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America
| | - Masahiro Ishigami
- Department of Physics, University of Central Florida, Orlando, FL 32816, United States of America
| | - J F Mitchell
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - Dariusz Kaczorowski
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland
| | - Arun Bansil
- Department of Physics, Northeastern University, Boston, MA 02115, United States of America
| | - Madhab Neupane
- Department of Physics, University of Central Florida, Orlando, FL 32816, United States of America
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Siddiquee KAMH, Munir R, Dissanayake C, Hu X, Yadav S, Takano Y, Choi ES, Le D, Rahman TS, Nakajima Y. Fermi surfaces of the topological semimetal CaSn 3probed through de Haas van Alphen oscillations. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:17LT01. [PMID: 33508812 DOI: 10.1088/1361-648x/abe0e2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 01/28/2021] [Indexed: 06/12/2023]
Abstract
In the search of topological superconductors, nailing down the Fermiology of the normal state is as crucial a prerequisite as unraveling the superconducting pairing symmetry. In particular, the number of time-reversal-invariant momenta (TRIM) in the Brillouin zone enclosed by Fermi surfaces is closely linked to the topological class of time-reversal-invariant systems, and can experimentally be investigated. We report here a detailed study of de Haas van Alphen quantum oscillations in single crystals of the topological semimetal CaSn3with torque magnetometry in high magnetic fields up to 35 T. In conjunction with density functional theory based calculations, the observed quantum oscillations frequencies indicate that the Fermi surfaces of CaSn3enclose an odd number of TRIM, satisfying one of the proposed criteria to realize topological superconductivity. Nonzero Berry phases extracted from the magnetic oscillations also support the nontrivial topological nature of CaSn3.
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Affiliation(s)
- K A M Hasan Siddiquee
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States of America
| | - Riffat Munir
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States of America
| | - Charuni Dissanayake
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States of America
| | - Xinzhe Hu
- Department of Physics, University of Florida, Gainesville, Florida 32611, United States of America
| | - Swapnil Yadav
- Department of Physics, University of Florida, Gainesville, Florida 32611, United States of America
| | - Yasumasa Takano
- Department of Physics, University of Florida, Gainesville, Florida 32611, United States of America
| | - Eun Sang Choi
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32816, United States of America
| | - Duy Le
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States of America
| | - Talat S Rahman
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States of America
| | - Yasuyuki Nakajima
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States of America
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