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DOE OSTI · 2873348

Large negative magnetoresistance in antiferromagnetic G⁡d 2 ⁢S⁢e 3

Karki Chhetri, Santosh [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:0000000318586655)·Acharya, Gokul [Univ. of Arkansas, Fayetteville, AR (United States)]·Graf, David [Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)]·Basnet, Rabindra [Univ. of Arkansas, Fayetteville, AR (United States); Univ. of Arkansas, Pine Bluff, AR (United States)] (ORCID:0000000255113155)·Rahman, Sumaya [Univ. of Arkansas, Fayetteville, AR (United States)]·Sharma, M. M. [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:000000029212438X)·Upreti, Dinesh [Univ. of Arkansas, Fayetteville, AR (United States)]·Nabi, Md Rafique Un [Univ. of Arkansas, Fayetteville, AR (United States)]·Kryvyi, Serhii [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:0000000332023154)·Sakon, Josh [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:000000028373969X)·Mortazavi, Mansour [Univ. of Arkansas, Pine Bluff, AR (United States)]·Da, Bo [National Institute for Materials Science (NIMS), Tsukuba (Japan)]·Churchill, Hugh [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:0000000282871373)·Hu, Jin [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:0000000300804239)
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Abstract

Rare earth chalcogenides provide a great platform to study exotic quantum phenomena such as superconductivity and charge density waves. Among various interesting properties, the coupling between magnetism and electronic transport has attracted significant attention. Here, we report the investigation of such coupling in α-G⁡d 2⁢ S⁢e 3 single crystals through magnetic, calorimetric, and transport property measurements. α-G⁡d 2 ⁢S⁢e 3 is found to display an antiferromagnetic ground state below 11 K with metamagnetic spin-flop transitions. The magnetic fluctuations remain strong above the transition temperature. Transport measurements reveal an overall metallic transport behavior with a large negative magnetoresistance of approximately 65% near the magnetic transition temperature, together with positive magnetoresistance near the field-induced spin-flop transitions, which can be understood in terms of the suppression of spin scattering by the magnetic field.

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Karki Chhetri, Santosh [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:0000000318586655), Acharya, Gokul [Univ. of Arkansas, Fayetteville, AR (United States)], Graf, David [Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)], Basnet, Rabindra [Univ. of Arkansas, Fayetteville, AR (United States); Univ. of Arkansas, Pine Bluff, AR (United States)] (ORCID:0000000255113155), Rahman, Sumaya [Univ. of Arkansas, Fayetteville, AR (United States)], Sharma, M. M. [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:000000029212438X), Upreti, Dinesh [Univ. of Arkansas, Fayetteville, AR (United States)], Nabi, Md Rafique Un [Univ. of Arkansas, Fayetteville, AR (United States)], Kryvyi, Serhii [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:0000000332023154), Sakon, Josh [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:000000028373969X), Mortazavi, Mansour [Univ. of Arkansas, Pine Bluff, AR (United States)], Da, Bo [National Institute for Materials Science (NIMS), Tsukuba (Japan)], Churchill, Hugh [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:0000000282871373), Hu, Jin [Univ. of Arkansas, Fayetteville, AR (United States)] (ORCID:0000000300804239). 2025-01-22. Large negative magnetoresistance in antiferromagnetic G⁡d 2 ⁢S⁢e 3. https://doi.org/10.1103/physrevb.111.014431

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