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Showing 1 to 12 of 58 entries
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Nearest-neighbour resonating valence bonds in YbMgGaO.

Nature communications

Li Y, Adroja D, Voneshen D, Bewley RI, Zhang Q, Tsirlin AA, Gegenwart P.
PMID: 28639624
Nat Commun. 2017 Jun 22;8:15814. doi: 10.1038/ncomms15814.

Since its proposal by Anderson, resonating valence bonds (RVB) formed by a superposition of fluctuating singlet pairs have been a paradigmatic concept in understanding quantum spin liquids. Here, we show that excitations related to singlet breaking on nearest-neighbour bonds...

Absence of a long-range ordered magnetic ground state in Pr.

Journal of physics. Condensed matter : an Institute of Physics journal

Nair HS, Ogunbunmi MO, Ghosh SK, Adroja DT, Koza MM, Guidi T, Strydom AM.
PMID: 29473827
J Phys Condens Matter. 2018 Apr 11;30(14):145601. doi: 10.1088/1361-648X/aab1e5. Epub 2018 Feb 23.

Signatures of absence of a long-range ordered magnetic ground state down to 0.36 K are observed in magnetic susceptibility, specific heat, thermal/electrical transport and inelastic neutron scattering data of the quasi-skutterudite compound Pr

Investigations of the singlet ground state system: PrIrSi3.

Journal of physics. Condensed matter : an Institute of Physics journal

Anand VK, Adroja DT, Bhattacharyya A, Hillier AD, Taylor JW, Strydom AM.
PMID: 24994692
J Phys Condens Matter. 2014 Jul 30;26(30):306001. doi: 10.1088/0953-8984/26/30/306001. Epub 2014 Jul 04.

We report our comprehensive study of physical properties of a ternary intermetallic compound PrIrSi3 investigated by dc magnetic susceptibility χ(T), isothermal magnetization M(H), thermo-remnant magnetization M(t), ac magnetic susceptibility χac(T), specific heat Cp(T), electrical resistivity ρ(T), muon spin relaxation...

Quantum critical scaling and the origin of non-fermi-liquid behavior in Sc1-xUxPd3.

Physical review letters

Wilson SD, Dai P, Adroja DT, Lee SH, Chung JH, Lynn JW, Butch NP, Maple MB.
PMID: 15783667
Phys Rev Lett. 2005 Feb 11;94(5):056402. doi: 10.1103/PhysRevLett.94.056402. Epub 2005 Feb 09.

We used inelastic neutron scattering to study magnetic excitations of Sc1-xUxPd3 for U concentrations (x=0.25, 0.35) near the spin glass quantum critical point (QCP). The excitations are spatially incoherent, broad in energy (E=variant Planck's over 2piomega), and follow omega/T...

Crystalline electric field as a probe for long-range antiferromagnetic order and superconducting state of CeFeAsO(1-x)F(x).

Physical review letters

Chi S, Adroja DT, Guidi T, Bewley R, Li S, Zhao J, Lynn JW, Brown CM, Qiu Y, Chen GF, Lou JL, Wang NL, Dai P.
PMID: 19113445
Phys Rev Lett. 2008 Nov 21;101(21):217002. doi: 10.1103/PhysRevLett.101.217002. Epub 2008 Nov 20.

We use inelastic neutron scattering to study the crystalline electric field (CEF) excitations of Ce3+ in CeFeAsO(1-x)F(x) (x=0, 0.16). For nonsuperconducting CeFeAsO, the Ce CEF levels have three magnetic doublets in the paramagnetic state, but these doublets split into...

Vibron quasibound state in the noncentrosymmetric tetragonal heavy-fermion compound CeCuAl3.

Physical review letters

Adroja DT, del Moral A, de la Fuente C, Fraile A, Goremychkin EA, Taylor JW, Hillier AD, Fernandez-Alonso F.
PMID: 23003286
Phys Rev Lett. 2012 May 25;108(21):216402. doi: 10.1103/PhysRevLett.108.216402. Epub 2012 May 23.

We have investigated the noncentrosymmetric tetragonal heavy-fermion antiferromagnetic compound CeCuAl3 (T(N)=2.5 K) using inelastic neutron scattering (INS). Our INS results unequivocally reveal the presence of three magnetic excitations centered at 1.3, 9.8, and 20.5 meV. These spectral features cannot...

Spin-wave spectrum of the quantum ferromagnet on the pyrochlore lattice Lu2V2O7.

Physical review letters

Mena M, Perry RS, Perring TG, Le MD, Guerrero S, Storni M, Adroja DT, Rüegg Ch, McMorrow DF.
PMID: 25105649
Phys Rev Lett. 2014 Jul 25;113(4):047202. doi: 10.1103/PhysRevLett.113.047202. Epub 2014 Jul 23.

Neutron inelastic scattering has been used to probe the spin dynamics of the quantum (S=1/2) ferromagnet on the pyrochlore lattice Lu(2)V(2)O(7). Well-defined spin waves are observed at all energies and wave vectors, allowing us to determine the parameters of...

Exotic magnetism on the quasi-fcc lattices of the d3 double Perovskites La2NaB'O6 (B'=Ru, Os).

Physical review letters

Aczel AA, Baker PJ, Bugaris DE, Yeon J, Zur Loye HC, Guidi T, Adroja DT.
PMID: 24702418
Phys Rev Lett. 2014 Mar 21;112(11):117603. doi: 10.1103/PhysRevLett.112.117603. Epub 2014 Mar 20.

We find evidence for long-range and short-range (ζ=70 Å at 4 K) incommensurate magnetic order on the quasi-face-centered-cubic (fcc) lattices of the monoclinic double perovskites La2NaRuO6 and La2NaOsO6, respectively. Incommensurate magnetic order on the fcc lattice has not been...

Valence-fluctuation behavior of Yb ions and YbCuGa.

Physical review. B, Condensed matter

Adroja DT, Bhatia SN, Malik SK, Padalia BD, Vijayaraghavan R, Walia R.
PMID: 9995754
Phys Rev B Condens Matter. 1990 Aug 01;42(4):2700-2703. doi: 10.1103/physrevb.42.2700.

No abstract available.

Evidence of pseudogap formation in a new valence-fluctuating compound: CeRhSb.

Physical review. B, Condensed matter

Adroja DT, Malik SK.
PMID: 9998060
Phys Rev B Condens Matter. 1991 Mar 01;43(7):6277-6279. doi: 10.1103/physrevb.43.6277.

No abstract available.

Hemicrania Continua.

Annals of Indian Academy of Neurology

Prakash S, Adroja B.
PMID: 29720815
Ann Indian Acad Neurol. 2018 Apr;21:S23-S30. doi: 10.4103/aian.AIAN_352_17.

Hemicrania continua (HC) is an indomethacin responsive primary chronic headache disorder which is currently classified as a subtype of trigeminal autonomic cephalalgias (TACs). It is not very uncommon. There are >1000 cases of HC in the literature, and it...

Spin Waves in Detwinned BaFe_{2}As_{2}.

Physical review letters

Lu X, Scherer DD, Tam DW, Zhang W, Zhang R, Luo H, Harriger LW, Walker HC, Adroja DT, Andersen BM, Dai P.
PMID: 30141678
Phys Rev Lett. 2018 Aug 10;121(6):067002. doi: 10.1103/PhysRevLett.121.067002.

Understanding magnetic interactions in the parent compounds of high-temperature superconductors forms the basis for determining their role for the mechanism of superconductivity. For parent compounds of iron pnictide superconductors such as AFe_{2}As_{2} (A=Ba, Ca, Sr), although spin excitations have...

Showing 1 to 12 of 58 entries