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Tuning of charge density wave transitions in LaAuxSb2 by pressure and Au stoichiometry

Journal Article · · Physical Review B
 [1];  [2];  [3];  [1];  [1]
  1. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
  2. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy; McGill Univ., Montreal, QC (Canada). Dept. of Physics and Centre for the Physics of Materials
  3. Ames Lab., Ames, IA (United States)

Two charge density wave transition can be detected in LaAuSb2 at ~110 and ~90K by careful electrical transport measurements. Whereas control of the Au site occupancy in LaAuxSb2 (for 0.9x1.0 ) can suppress each of these transitions by ~80K , the application of hydrostatic pressure can completely suppress the lower transition by ~7.5kbar and the upper transition by ~17kbar . Here, clear anomalies in the resistance as well as the magnetoresistance are observed to coincide with the pressures at which the charge density wave transitions are driven to zero.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1661584
Report Number(s):
IS--J-10,312
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 12 Vol. 102; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (43)

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