@article{MTMT:2242098,
	title = {Malaria pigment crystals as magnetic micro-rotors: Key for high-sensitivity diagnosis},
	url = {https://m2.mtmt.hu/api/publication/2242098},
	author = {Butykai, Ádám and Orbánová, Agnesa and Kocsis, Vilmos and Szaller, Dávid and Bordács, Sándor and Tátrainé Szekeres, Erzsébet and Kiss, László Ferenc and Bóta, Attila and Vértessy, Beáta (Grolmuszné) and Zelles, Tivadar and Kézsmárki, István},
	doi = {10.1038/srep01431},
	journal-iso = {SCI REP},
	journal = {SCIENTIFIC REPORTS},
	volume = {3},
	unique-id = {2242098},
	issn = {2045-2322},
	abstract = {The need to develop new methods for the high-sensitivity 
		diagnosis of malaria has initiated a global activity in medical 
		and interdisciplinary sciences. Most of the diverse variety of 
		emerging techniques are based on research-grade instruments, 
		sophisticated reagent-based assays or rely on expertise. Here, 
		we suggest an alternative optical methodology with an easy-to-
		use and cost-effective instrumentation based on unique 
		properties of malaria pigment reported previously and determined 
		quantitatively in the present study. Malaria pigment, also 
		called hemozoin, is an insoluble microcrystalline form of heme. 
		These crystallites show remarkable magnetic and optical 
		anisotropy distinctly from any other components of blood. As a 
		consequence, they can simultaneously act as magnetically driven 
		micro-rotors and spinning polarizers in suspensions. These 
		properties can gain importance not only in malaria diagnosis and 
		therapies, where hemozoin is considered as drug target or immune 
		modulator, but also in the magnetic manipulation of cells and 
		tissues on the microscopic scale.},
	keywords = {RED-BLOOD-CELLS; IRON; PARASITES; TESTS; PLASMODIUM-FALCIPARUM; HEMOZOIN CRYSTALS; ANTIMALARIAL-DRUGS; HEMOGLOBIN DEGRADATION; MAGNETORHEOLOGICAL FLUIDS; BETA-HEMATIN; doktori iskola: Fizikai Tudományok},
	year = {2013},
	eissn = {2045-2322},
	orcid-numbers = {Szaller, Dávid/0000-0003-4451-118X; Bordács, Sándor/0000-0003-0420-5997; Zelles, Tivadar/0000-0002-1401-1355}
}

@article{MTMT:1847933,
	title = {Pressure and temperature dependence of interlayer spin diffusion and electrical conductivity in the layered organic conductors kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]X (X = Cl, Br)},
	url = {https://m2.mtmt.hu/api/publication/1847933},
	author = {Antal, Ágnes and Fehér, Titusz and Tátrainé Szekeres, Erzsébet and Fülöp, Ferenc and Náfrádi, Bálint and Forro, L and Jánossy, András},
	doi = {10.1103/PhysRevB.84.075124},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {84},
	unique-id = {1847933},
	issn = {2469-9950},
	abstract = {A high frequency (111.2-420 GHz) electron spin resonance study of the interlayer spin diffusion is presented in the conducting phases of the layered organic compounds, kappa-( BEDT-TTF)(2)Cu[N(CN)(2)]X (kappa-ET(2)-X), X = Cl or Br. The interlayer spin cross relaxation time T(x) and the intrinsic spin relaxation time T(2) of single layers are measured as a function of temperature and pressure. Spin diffusion is two dimensional in the high temperature bad-metal phase (i.e., electrons are confined to a single molecular layer for longer than T(2)). The interlayer electron hopping frequency nu(perpendicular to) = 1/(2T(x)) decreases along the bad-metal to Mott insulator crossover and increases along the bad-metal to normal metal (or superconductor) crossover. The density of states (DOS) is determined from a comparison of T(x) and the interlayer resistivity. In the bad-metal phase it is four to five times larger than the DOS calculated from the electronic structure neglecting electron correlations. In kappa-ET(2)-X the DOS increases with pressure along the bad-metal to normal metal crossover. Results are compared with predictions of the dynamical mean field theory.},
	year = {2011},
	eissn = {2469-9969}
}

@article{MTMT:2643994,
	title = {Spin Diffusion and Magnetic Eigenoscillations Confined to Single Molecular Layers in the Organic Conductors kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]X (X=Cl,Br)},
	url = {https://m2.mtmt.hu/api/publication/2643994},
	author = {Antal, Ágnes and Fehér, Titusz and Jánossy, András and Tátrainé Szekeres, Erzsébet and Fülöp, Ferenc},
	doi = {10.1103/PhysRevLett.102.086404},
	journal-iso = {PHYS REV LETT},
	journal = {PHYSICAL REVIEW LETTERS},
	volume = {102},
	unique-id = {2643994},
	issn = {0031-9007},
	abstract = {The layered organic compounds, kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]X X=Cl, Br) are metals at ambient temperatures. At low temperatures, the Cl compound is a weakly ferromagnetic Mott insulator while the isostructural Br compound is a superconductor. We find by conduction electron spin resonance and antiferromagnetic resonance (AFMR) an extreme anisotropy of spin transport and magnetic interactions in these materials. In the metallic state spin diffusion is confined to single molecular layers within the spin lifetime of 10(-9) s. Electrons diffuse several hundreds of nm without interlayer hopping. In the magnetically ordered insulating phase of the Cl compound we observe and calculate the four AFMR modes of the weakly coupled single molecular layers. The interplane exchange field is comparable or less than the typically 1 mT dipolar field and almost 10(6) times less than the intralayer exchange field.},
	year = {2009},
	eissn = {1079-7114}
}