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Title: Highly Tunable Magnetic Phases in Transition-Metal Dichalcogenide Fe 1 / 3 + δ NbS 2

Abstract

Layered transition-metal dichalcogenides (TMDCs) host a plethora of interesting physical phenomena ranging from charge order to superconductivity. By introducing magnetic ions into 2H-TA2 (T=Nb, Ta; A=S, Se), the material forms a family of magnetic intercalated TMDCs MxTA2 (M=3d transition metal). Recently, Fe1/3+δNbS2 has been found to possess intriguing resistance switching and magnetic memory effects coupled to the Néel temperature of TN~45 K [Maniv et al., Nat. Phys. 17, 525 (2021); Sci. Adv. 7, eabd8452 (2021)]. We present comprehensive single crystal neutron diffraction measurements on underintercalated (δ~-0.01), stoichiometric, and overintercalated (δ~0.01) samples. Magnetic defects are usually considered to suppress magnetic correlations and, concomitantly, transition temperatures. Instead, we observe highly tunable magnetic long-ranged states as the Fe concentration is varied from underintercalated to overintercalated, that is, from Fe vacancies to Fe interstitials. The under- and overintercalated samples reveal distinct antiferromagnetic stripe and zigzag orders, associated with wave vectors k1=(0.5,0,0) and k2=(0.25,0.5,0), respectively. The stoichiometric sample shows two successive magnetic phase transitions for these two wave vectors with an unusual rise-and-fall feature in the intensities connected to k1. We ascribe this sensitive tunability to the competing next-nearest neighbor exchange interactions and the oscillatory nature of the Ruderman-Kittel-Kasuya-Yosida mechanism. We discuss experimental observations thatmore » relate to the observed intriguing switching resistance behaviors. Our discovery of a magnetic defect tuning of the magnetic structure in bulk crystals Fe1/3+δNbS2 provides a possible new avenue to implement controllable antiferromagnetic spintronic devices.« less

Authors:
ORCiD logo; ; ORCiD logo; ; ORCiD logo; ; ; ORCiD logo; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Novel Pathways to Quantum Coherence in Materials (NPQC); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Institute of Standards and Technology (NIST); National Science Foundation (NSF)
OSTI Identifier:
1861133
Alternate Identifier(s):
OSTI ID: 1877044; OSTI ID: 1892423
Grant/Contract Number:  
AC02-05-CH11231; AC02-05CH11231; AC05-00OR22725
Resource Type:
Published Article
Journal Name:
Physical Review. X
Additional Journal Information:
Journal Name: Physical Review. X Journal Volume: 12 Journal Issue: 2; Journal ID: ISSN 2160-3308
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; magnetic order; magnetic phase transitions; magnetism; 2-dimensional systems; antiferromagnets; transition metal dichalcogenides; triangular network

Citation Formats

Wu, Shan, Xu, Zhijun, Haley, Shannon C., Weber, Sophie F., Acharya, Arani, Maniv, Eran, Qiu, Yiming, Aczel, A. A., Settineri, Nicholas S., Neaton, Jeffrey B., Analytis, James G., and Birgeneau, Robert J. Highly Tunable Magnetic Phases in Transition-Metal Dichalcogenide Fe 1 / 3 + δ NbS 2. United States: N. p., 2022. Web. doi:10.1103/PhysRevX.12.021003.
Wu, Shan, Xu, Zhijun, Haley, Shannon C., Weber, Sophie F., Acharya, Arani, Maniv, Eran, Qiu, Yiming, Aczel, A. A., Settineri, Nicholas S., Neaton, Jeffrey B., Analytis, James G., & Birgeneau, Robert J. Highly Tunable Magnetic Phases in Transition-Metal Dichalcogenide Fe 1 / 3 + δ NbS 2. United States. https://doi.org/10.1103/PhysRevX.12.021003
Wu, Shan, Xu, Zhijun, Haley, Shannon C., Weber, Sophie F., Acharya, Arani, Maniv, Eran, Qiu, Yiming, Aczel, A. A., Settineri, Nicholas S., Neaton, Jeffrey B., Analytis, James G., and Birgeneau, Robert J. Tue . "Highly Tunable Magnetic Phases in Transition-Metal Dichalcogenide Fe 1 / 3 + δ NbS 2". United States. https://doi.org/10.1103/PhysRevX.12.021003.
@article{osti_1861133,
title = {Highly Tunable Magnetic Phases in Transition-Metal Dichalcogenide Fe 1 / 3 + δ NbS 2},
author = {Wu, Shan and Xu, Zhijun and Haley, Shannon C. and Weber, Sophie F. and Acharya, Arani and Maniv, Eran and Qiu, Yiming and Aczel, A. A. and Settineri, Nicholas S. and Neaton, Jeffrey B. and Analytis, James G. and Birgeneau, Robert J.},
abstractNote = {Layered transition-metal dichalcogenides (TMDCs) host a plethora of interesting physical phenomena ranging from charge order to superconductivity. By introducing magnetic ions into 2H-TA2 (T=Nb, Ta; A=S, Se), the material forms a family of magnetic intercalated TMDCs MxTA2 (M=3d transition metal). Recently, Fe1/3+δNbS2 has been found to possess intriguing resistance switching and magnetic memory effects coupled to the Néel temperature of TN~45 K [Maniv et al., Nat. Phys. 17, 525 (2021); Sci. Adv. 7, eabd8452 (2021)]. We present comprehensive single crystal neutron diffraction measurements on underintercalated (δ~-0.01), stoichiometric, and overintercalated (δ~0.01) samples. Magnetic defects are usually considered to suppress magnetic correlations and, concomitantly, transition temperatures. Instead, we observe highly tunable magnetic long-ranged states as the Fe concentration is varied from underintercalated to overintercalated, that is, from Fe vacancies to Fe interstitials. The under- and overintercalated samples reveal distinct antiferromagnetic stripe and zigzag orders, associated with wave vectors k1=(0.5,0,0) and k2=(0.25,0.5,0), respectively. The stoichiometric sample shows two successive magnetic phase transitions for these two wave vectors with an unusual rise-and-fall feature in the intensities connected to k1. We ascribe this sensitive tunability to the competing next-nearest neighbor exchange interactions and the oscillatory nature of the Ruderman-Kittel-Kasuya-Yosida mechanism. We discuss experimental observations that relate to the observed intriguing switching resistance behaviors. Our discovery of a magnetic defect tuning of the magnetic structure in bulk crystals Fe1/3+δNbS2 provides a possible new avenue to implement controllable antiferromagnetic spintronic devices.},
doi = {10.1103/PhysRevX.12.021003},
journal = {Physical Review. X},
number = 2,
volume = 12,
place = {United States},
year = {Tue Apr 05 00:00:00 EDT 2022},
month = {Tue Apr 05 00:00:00 EDT 2022}
}

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