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Title: Discovery of Charge Order in the Transition Metal Dichalcogenide FexNbS2

Journal Article · · Physical Review Letters
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [4];  [4];  [5];  [5];  [6];  [6];  [7];  [8];  [3]; ORCiD logo [2];  [9]
  1. University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Santa Clara University, CA (United States)
  2. University of California, San Diego, CA (United States)
  3. Yale University, New Haven, CT (United States)
  4. Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  5. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
  6. Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  7. University of California, Berkeley, CA (United States)
  8. University of California, Berkeley, CA (United States); CIFAR Quantum Materials, CIFAR, Toronto, ON (Canada)
  9. University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

The Fe intercalated transition metal dichalcogenide (TMD), Fe1/3NbS2, exhibits remarkable resistance switching properties and highly tunable spin ordering phases due to magnetic defects. We conduct synchrotron x-ray scattering measurements on both underintercalated ( x = 0.32 ) and overintercalated ( x = 0.35 ) samples. We discover a new charge order phase in the overintercalated sample, where the excess Fe atoms lead to a zigzag antiferromagnetic order. The agreement between the charge and magnetic ordering temperatures, as well as their intensity relationship, suggests a strong magnetoelastic coupling as the mechanism for the charge ordering. In conclusion, our results reveal the first example of a charge order phase among the intercalated TMD family and demonstrate the ability to stabilize charge modulation by introducing electronic correlations, where the charge order is absent in bulk 2H - NbS2 compared to other pristine TMDs.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704; AC02-05-CH11231; AC02-06CH11357; AC02-76SF00515; KC2202; DMR-2145080; DMR-2239171
OSTI ID:
2204611
Alternate ID(s):
OSTI ID: 2497906
Report Number(s):
BNL-224959-2023-JAAM; TRN: US2407169; TRN: US2407169
Journal Information:
Physical Review Letters, Vol. 131, Issue 18; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (4)